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@@ -0,0 +1,7632 @@ + -*- coding: utf-8 -*- +Changes with Apache 2.4.56 + + *) rotatelogs: Add -T flag to allow subsequent rotated logfiles to be + truncated without the initial logfile being truncated. [Eric Covener] + + *) mod_ldap: LDAPConnectionPoolTTL should accept negative values in order to + allow connections of any age to be reused. Up to now, a negative value + was handled as an error when parsing the configuration file. PR 66421. + [nailyk <bzapache nailyk.fr>, Christophe Jaillet] + + *) mod_proxy_ajp: Report an error if the AJP backend sends an invalid number + of headers. [Ruediger Pluem] + + *) mod_md: + - Enabling ED25519 support and certificate transparency information when + building with libressl v3.5.0 and newer. Thanks to Giovanni Bechis. + - MDChallengeDns01 can now be configured for individual domains. + Thanks to Jérôme Billiras (@bilhackmac) for the initial PR. + - Fixed a bug found by Jérôme Billiras (@bilhackmac) that caused the challenge + teardown not being invoked as it should. + [Stefan Eissing] + + *) mod_http2: client resets of HTTP/2 streams led to unwanted 500 errors + reported in access logs and error documents. The processing of the + reset was correct, only unneccesary reporting was caused. + [Stefan Eissing] + + *) mod_proxy_uwsgi: Stricter backend HTTP response parsing/validation. + [Yann Ylavic] + +Changes with Apache 2.4.55 + + *) SECURITY: CVE-2022-37436: Apache HTTP Server: mod_proxy prior to + 2.4.55 allows a backend to trigger HTTP response splitting + (cve.mitre.org) + Prior to Apache HTTP Server 2.4.55, a malicious backend can + cause the response headers to be truncated early, resulting in + some headers being incorporated into the response body. If the + later headers have any security purpose, they will not be + interpreted by the client. + Credits: Dimas Fariski Setyawan Putra (@nyxsorcerer) + + *) SECURITY: CVE-2022-36760: Apache HTTP Server: mod_proxy_ajp + Possible request smuggling (cve.mitre.org) + Inconsistent Interpretation of HTTP Requests ('HTTP Request + Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server + allows an attacker to smuggle requests to the AJP server it + forwards requests to. This issue affects Apache HTTP Server + Apache HTTP Server 2.4 version 2.4.54 and prior versions. + Credits: ZeddYu_Lu from Qi'anxin Research Institute of Legendsec + at Qi'anxin Group + + *) SECURITY: CVE-2006-20001: mod_dav out of bounds read, or write + of zero byte (cve.mitre.org) + A carefully crafted If: request header can cause a memory read, + or write of a single zero byte, in a pool (heap) memory location + beyond the header value sent. This could cause the process to + crash. + This issue affects Apache HTTP Server 2.4.54 and earlier. + + *) mod_dav: Open the lock database read-only when possible. + PR 36636 [Wilson Felipe <wfelipe gmail.com>, manu] + + *) mod_proxy_http2: apply the standard httpd content type handling + to responses from the backend, as other proxy modules do. Fixes PR 66391. + Thanks to Jérôme Billiras for providing the patch. + [Stefan Eissing] + + *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981 + [Basant Kumar Kukreja <basant.kukreja sun.com>, Alejandro Alvarez + <alejandro.alvarez.ayllon cern.ch>] + + *) mod_proxy_hcheck: Honor worker timeout settings. [Yann Ylavic] + + *) mod_http2: version 2.0.11 of the module, synchronizing changes + with the gitgub version. This is a partial rewrite of how connections + and streams are handled. + - an APR pollset and pipes (where supported) are used to monitor + the main connection and react to IO for request/response handling. + This replaces the stuttered timed waits of earlier versions. + - H2SerializeHeaders directive still exists, but has no longer an effect. + - Clients that seemingly misbehave still get less resources allocated, + but ongoing requests are no longer disrupted. + - Fixed an issue since 1.15.24 that "Server" headers in proxied requests + were overwritten instead of preserved. [PR by @daum3ns] + - A regression in v1.15.24 was fixed that could lead to httpd child + processes not being terminated on a graceful reload or when reaching + MaxConnectionsPerChild. When unprocessed h2 requests were queued at + the time, these could stall. See #212. + - Improved information displayed in 'server-status' for H2 connections when + Extended Status is enabled. Now one can see the last request that IO + operations happened on and transferred IO stats are updated as well. + - When reaching server limits, such as MaxRequestsPerChild, the HTTP/2 connection + send a GOAWAY frame much too early on new connections, leading to invalid + protocol state and a client failing the request. See PR65731 at + <https://bz.apache.org/bugzilla/show_bug.cgi?id=65731>. + The module now initializes the HTTP/2 protocol correctly and allows the + client to submit one request before the shutdown via a GOAWAY frame + is being announced. + - :scheme pseudo-header values, not matching the + connection scheme, are forwarded via absolute uris to the + http protocol processing to preserve semantics of the request. + Checks on combinations of pseudo-headers values/absence + have been added as described in RFC 7540. Fixes #230. + - A bug that prevented trailers (e.g. HEADER frame at the end) to be + generated in certain cases was fixed. See #233 where it prevented + gRPC responses to be properly generated. + - Request and response header values are automatically stripped of leading + and trialing space/tab characters. This is equivalent behaviour to what + Apache httpd's http/1.1 parser does. + The checks for this in nghttp2 v1.50.0+ are disabled. + - Extensive testing in production done by Alessandro Bianchi (@alexskynet) + on the v2.0.x versions for stability. Many thanks! + *) mod_proxy_http2: fixed #235 by no longer forwarding 'Host:' header when + request ':authority' is known. Improved test case that did not catch that + the previous 'fix' was incorrect. + + *) mod_proxy_hcheck: hcmethod now allows for HTTP/1.1 requests + using GET11, HEAD11 and/or OPTIONS11. [Jim Jagielski] + + *) mod_proxy: The AH03408 warning for a forcibly closed backend + connection is now logged at INFO level. [Yann Ylavic] + + *) mod_ssl: When dumping the configuration, the existence of + certificate/key files is no longer tested. [Joe Orton] + + *) mod_authn_core: Add expression support to AuthName and AuthType. + [Graham Leggett] + + *) mod_ssl: when a proxy connection had handled a request using SSL, an + error was logged when "SSLProxyEngine" was only configured in the + location/proxy section and not the overall server. The connection + continued to work, the error log was in error. Fixed PR66190. + [Stefan Eissing] + + *) mod_proxy_hcheck: Re-enable workers in standard ERROR state. PR 66302. + [Alessandro Cavaliere <alessandro.cavalier7 unibo.it>] + + *) mod_proxy_hcheck: Detect AJP/CPING support correctly. PR 66300. + [Alessandro Cavaliere <alessandro.cavalier7 unibo.it>] + + *) mod_http2: Export mod_http2.h as public header. [Stefan Eissing] + + *) mod_md: a new directive `MDStoreLocks` can be used on cluster + setups with a shared file system for `MDStoreDir` to order + activation of renewed certificates when several cluster nodes are + restarted at the same time. Store locks are not enabled by default. + Restored curl_easy cleanup behaviour from v2.4.14 and refactored + the use of curl_multi for OCSP requests to work with that. + Fixes <https://github.com/icing/mod_md/issues/293>. + + *) core: Avoid an overflow on large inputs in ap_is_matchexp. PR 66033 + [Ruediger Pluem] + + *) mod_heartmonitor: Allow "HeartbeatMaxServers 0" to use file based + storage instead of slotmem. Needed after setting + HeartbeatMaxServers default to the documented value 10 in 2.4.54. + PR 66131. [Jérôme Billiras] + + *) mod_dav: DAVlockDiscovery option to disable WebDAV lock discovery + This is a game changer for performances if client use PROPFIND a lot, + PR 66313. [Emmanuel Dreyfus] + +Changes with Apache 2.4.54 + + *) SECURITY: CVE-2022-31813: mod_proxy X-Forwarded-For dropped by + hop-by-hop mechanism (cve.mitre.org) + Apache HTTP Server 2.4.53 and earlier may not send the + X-Forwarded-* headers to the origin server based on client side + Connection header hop-by-hop mechanism. + This may be used to bypass IP based authentication on the origin + server/application. + Credits: The Apache HTTP Server project would like to thank + Gaetan Ferry (Synacktiv) for reporting this issue + + *) SECURITY: CVE-2022-30556: Information Disclosure in mod_lua with + websockets (cve.mitre.org) + Apache HTTP Server 2.4.53 and earlier may return lengths to + applications calling r:wsread() that point past the end of the + storage allocated for the buffer. + Credits: The Apache HTTP Server project would like to thank + Ronald Crane (Zippenhop LLC) for reporting this issue + + *) SECURITY: CVE-2022-30522: mod_sed denial of service + (cve.mitre.org) + If Apache HTTP Server 2.4.53 is configured to do transformations + with mod_sed in contexts where the input to mod_sed may be very + large, mod_sed may make excessively large memory allocations and + trigger an abort. + Credits: This issue was found by Brian Moussalli from the JFrog + Security Research team + + *) SECURITY: CVE-2022-29404: Denial of service in mod_lua + r:parsebody (cve.mitre.org) + In Apache HTTP Server 2.4.53 and earlier, a malicious request to + a lua script that calls r:parsebody(0) may cause a denial of + service due to no default limit on possible input size. + Credits: The Apache HTTP Server project would like to thank + Ronald Crane (Zippenhop LLC) for reporting this issue + + *) SECURITY: CVE-2022-28615: Read beyond bounds in + ap_strcmp_match() (cve.mitre.org) + Apache HTTP Server 2.4.53 and earlier may crash or disclose + information due to a read beyond bounds in ap_strcmp_match() + when provided with an extremely large input buffer. While no + code distributed with the server can be coerced into such a + call, third-party modules or lua scripts that use + ap_strcmp_match() may hypothetically be affected. + Credits: The Apache HTTP Server project would like to thank + Ronald Crane (Zippenhop LLC) for reporting this issue + + *) SECURITY: CVE-2022-28614: read beyond bounds via ap_rwrite() + (cve.mitre.org) + The ap_rwrite() function in Apache HTTP Server 2.4.53 and + earlier may read unintended memory if an attacker can cause the + server to reflect very large input using ap_rwrite() or + ap_rputs(), such as with mod_luas r:puts() function. + Credits: The Apache HTTP Server project would like to thank + Ronald Crane (Zippenhop LLC) for reporting this issue + + *) SECURITY: CVE-2022-28330: read beyond bounds in mod_isapi + (cve.mitre.org) + Apache HTTP Server 2.4.53 and earlier on Windows may read beyond + bounds when configured to process requests with the mod_isapi + module. + Credits: The Apache HTTP Server project would like to thank + Ronald Crane (Zippenhop LLC) for reporting this issue + + *) SECURITY: CVE-2022-26377: mod_proxy_ajp: Possible request + smuggling (cve.mitre.org) + Inconsistent Interpretation of HTTP Requests ('HTTP Request + Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server + allows an attacker to smuggle requests to the AJP server it + forwards requests to. This issue affects Apache HTTP Server + Apache HTTP Server 2.4 version 2.4.53 and prior versions. + Credits: Ricter Z @ 360 Noah Lab + + *) mod_ssl: SSLFIPS compatible with OpenSSL 3.0. PR 66063. + [Petr Sumbera <petr.sumbera oracle.com>, Yann Ylavic] + + *) mod_proxy_http: Avoid 417 responses for non forwardable 100-continue. + PR 65666. [Yann Ylavic] + + *) mod_md: a bug was fixed that caused very large MDomains + with the combined DNS names exceeding ~7k to fail, as + request bodies would contain partially wrong data from + uninitialized memory. This would have appeared as failure + in signing-up/renewing such configurations. + [Stefan Eissing, Ronald Crane (Zippenhop LLC)] + + *) mod_proxy_http: Avoid 417 responses for non forwardable 100-continue. + PR 65666. [Yann Ylavic] + + *) MPM event: Restart children processes killed before idle maintenance. + PR 65769. [Yann Ylavic, Ruediger Pluem] + + *) ab: Allow for TLSv1.3 when the SSL library supports it. + [abhilash1232 gmail.com, xiaolongx.jiang intel.com, Yann Ylavic] + + *) core: Disable TCP_NOPUSH optimization on OSX since it might introduce + transmission delays. PR 66019. [Yann Ylavic] + + *) MPM event: Fix accounting of active/total processes on ungraceful restart, + PR 66004 (follow up to PR 65626 from 2.4.52). [Yann Ylavic] + + *) core: make ap_escape_quotes() work correctly on strings + with more than MAX_INT/2 characters, counting quotes double. + Credit to <generalbugs@zippenhop.com> for finding this. + [Stefan Eissing] + + *) mod_md: the `MDCertificateAuthority` directive can take more than one URL/name of + an ACME CA. This gives a failover for renewals when several consecutive attempts + to get a certificate failed. + A new directive was added: `MDRetryDelay` sets the delay of retries. + A new directive was added: `MDRetryFailover` sets the number of errored + attempts before an alternate CA is selected for certificate renewals. + [Stefan Eissing] + + *) mod_http2: remove unused and insecure code. Fixes PR66037. + Thanks to Ronald Crane (Zippenhop LLC) for reporting this. + [Stefan Eissing] + + *) mod_proxy: Add backend port to log messages to + ease identification of involved service. [Rainer Jung] + + *) mod_http2: removing unscheduling of ongoing tasks when + connection shows potential abuse by a client. This proved + counter-productive and the abuse detection can false flag + requests using server-side-events. + Fixes <https://github.com/icing/mod_h2/issues/231>. + [Stefan Eissing] + + *) mod_md: Implement full auto status ("key: value" type status output). + Especially not only status summary counts for certificates and + OCSP stapling but also lists. Auto status format is similar to + what was used for mod_proxy_balancer. + [Rainer Jung] + + *) mod_md: fixed a bug leading to failed transfers for OCSP + stapling information when more than 6 certificates needed + updates in the same run. [Stefan Eissing] + + *) mod_proxy: Set a status code of 502 in case the backend just closed the + connection in reply to our forwarded request. [Ruediger Pluem] + + *) mod_md: a possible NULL pointer deref was fixed in + the JSON code for persisting time periods (start+end). + Fixes #282 on mod_md's github. + Thanks to @marcstern for finding this. [Stefan Eissing] + + *) mod_heartmonitor: Set the documented default value + "10" for HeartbeatMaxServers instead of "0". With "0" + no shared memory slotmem was initialized. [Rainer Jung] + + *) mod_md: added support for managing certificates via a + local tailscale daemon for users of that secure networking. + This gives trusted certificates for tailscale assigned + domain names in the *.ts.net space. + [Stefan Eissing] + +Changes with Apache 2.4.53 + + *) SECURITY: CVE-2022-23943: mod_sed: Read/write beyond bounds + (cve.mitre.org) + Out-of-bounds Write vulnerability in mod_sed of Apache HTTP + Server allows an attacker to overwrite heap memory with possibly + attacker provided data. + This issue affects Apache HTTP Server 2.4 version 2.4.52 and + prior versions. + Credits: Ronald Crane (Zippenhop LLC) + + *) SECURITY: CVE-2022-22721: core: Possible buffer overflow with + very large or unlimited LimitXMLRequestBody (cve.mitre.org) + If LimitXMLRequestBody is set to allow request bodies larger + than 350MB (defaults to 1M) on 32 bit systems an integer + overflow happens which later causes out of bounds writes. + This issue affects Apache HTTP Server 2.4.52 and earlier. + Credits: Anonymous working with Trend Micro Zero Day Initiative + + *) SECURITY: CVE-2022-22720: HTTP request smuggling vulnerability + in Apache HTTP Server 2.4.52 and earlier (cve.mitre.org) + Apache HTTP Server 2.4.52 and earlier fails to close inbound + connection when errors are encountered discarding the request + body, exposing the server to HTTP Request Smuggling + Credits: James Kettle <james.kettle portswigger.net> + + *) SECURITY: CVE-2022-22719: mod_lua Use of uninitialized value of + in r:parsebody (cve.mitre.org) + A carefully crafted request body can cause a read to a random + memory area which could cause the process to crash. + This issue affects Apache HTTP Server 2.4.52 and earlier. + Credits: Chamal De Silva + + *) core: Make sure and check that LimitXMLRequestBody fits in system memory. + [Ruediger Pluem, Yann Ylavic] + + *) core: Simpler connection close logic if discarding the request body fails. + [Yann Ylavic, Ruediger Pluem] + + *) mod_http2: preserve the port number given in a HTTP/1.1 + request that was Upgraded to HTTP/2. Fixes PR65881. + [Stefan Eissing] + + *) mod_proxy: Allow for larger worker name. PR 53218. [Yann Ylavic] + + *) dbm: Split the loading of a dbm driver from the opening of a dbm file. When + an attempt to load a dbm driver fails, log clearly which driver triggered + the error (not "default"), and what the error was. [Graham Leggett] + + *) mod_proxy: Use the maxium of front end and backend timeouts instead of the + minimum when tunneling requests (websockets, CONNECT requests). + Backend timeouts can be configured more selectively (per worker if needed) + as front end timeouts and typically the backend timeouts reflect the + application requirements better. PR 65886 [Ruediger Pluem] + + *) ap_regex: Use Thread Local Storage (TLS) to recycle ap_regexec() buffers + when an efficient TLS implementation is available. [Yann Ylavic] + + *) core, mod_info: Add compiled and loaded PCRE versions to version + number display. [Rainer Jung] + + *) mod_md: do not interfere with requests to /.well-known/acme-challenge/ + resources if challenge type 'http-01' is not configured for a domain. + Fixes <https://github.com/icing/mod_md/issues/279>. + [Stefan Eissing] + + *) mod_dav: Fix regression when gathering properties which could lead to huge + memory consumption proportional to the number of resources. + [Evgeny Kotkov, Ruediger Pluem] + + *) Support pcre2 (10.x) library in place of the now end-of-life pcre (8.x) + for regular expression evaluation. This depends on locating pcre2-config. + [William Rowe, Petr Pisar <ppisar redhat.com>, Rainer Jung] + + *) Add the ldap function to the expression API, allowing LDAP filters and + distinguished names based on expressions to be escaped correctly to + guard against LDAP injection. [Graham Leggett] + + *) mod_md: the status description in MDomain's JSON, exposed in the + md-status handler (if configured) did sometimes not carry the correct + message when certificates needed renew. + [Stefan Eissing] + + *) mpm_event: Fix a possible listener deadlock on heavy load when restarting + and/or reaching MaxConnectionsPerChild. PR 65769. [Yann Ylavic] + +Changes with Apache 2.4.52 + + *) SECURITY: CVE-2021-44790: Possible buffer overflow when parsing + multipart content in mod_lua of Apache HTTP Server 2.4.51 and + earlier (cve.mitre.org) + A carefully crafted request body can cause a buffer overflow in + the mod_lua multipart parser (r:parsebody() called from Lua + scripts). + The Apache httpd team is not aware of an exploit for the + vulnerability though it might be possible to craft one. + This issue affects Apache HTTP Server 2.4.51 and earlier. + Credits: Chamal + + *) SECURITY: CVE-2021-44224: Possible NULL dereference or SSRF in + forward proxy configurations in Apache HTTP Server 2.4.51 and + earlier (cve.mitre.org) + A crafted URI sent to httpd configured as a forward proxy + (ProxyRequests on) can cause a crash (NULL pointer dereference) + or, for configurations mixing forward and reverse proxy + declarations, can allow for requests to be directed to a + declared Unix Domain Socket endpoint (Server Side Request + Forgery). + This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 + (included). + Credits: 漂亮鼠 + TengMA(@Te3t123) + + *) http: Enforce that fully qualified uri-paths not to be forward-proxied + have an http(s) scheme, and that the ones to be forward proxied have a + hostname, per HTTP specifications. [Ruediger Pluem, Yann Ylavic] + + *) configure: OpenSSL detection will now use pkg-config data from + .../lib64/ within the --with-ssl path. [Jean-Frederic Clere] + + *) mod_proxy_connect, mod_proxy: Do not change the status code after we + already sent it to the client. [Ruediger Pluem] + + *) mod_http: Correctly sent a 100 Continue status code when sending an interim + response as result of an Expect: 100-Continue in the request and not the + current status code of the request. PR 65725 [Ruediger Pluem] + + *) mod_dav: Some DAV extensions, like CalDAV, specify both document + elements and property elements that need to be taken into account + when generating a property. The document element and property element + are made available in the dav_liveprop_elem structure by calling + dav_get_liveprop_element(). [Graham Leggett] + + *) mod_dav: Add utility functions dav_validate_root_ns(), + dav_find_child_ns(), dav_find_next_ns(), dav_find_attr_ns() and + dav_find_attr() so that other modules get to play too. + [Graham Leggett] + + *) mpm_event: Restart stopping of idle children after a load peak. PR 65626. + [Yann Ylavic, Ruediger Pluem] + + *) mod_http2: fixes 2 regressions in server limit handling. + 1. When reaching server limits, such as MaxRequestsPerChild, the + HTTP/2 connection send a GOAWAY frame much too early on new + connections, leading to invalid protocol state and a client + failing the request. See PR65731. + The module now initializes the HTTP/2 protocol correctly and + allows the client to submit one request before the shutdown + via a GOAWAY frame is being announced. + 2. A regression in v1.15.24 was fixed that could lead to httpd + child processes not being terminated on a graceful reload or + when reaching MaxConnectionsPerChild. When unprocessed h2 + requests were queued at the time, these could stall. + See <https://github.com/icing/mod_h2/issues/212>. + [Stefan Eissing] + + *) mod_ssl: Add build support for OpenSSL v3. [Rainer Jung, + Stefan Fritsch, Yann Ylavic, Stefan Eissing, Joe Orton, + Giovanni Bechis] + + *) mod_proxy_connect: Honor the smallest of the backend or client timeout + while tunneling. [Yann Ylavic] + + *) mod_proxy: SetEnv proxy-nohalfclose (or alike) allows to disable TCP + half-close forwarding when tunneling protocols. [Yann Ylavic] + + *) core: Be safe with ap_lingering_close() called with a socket NULL-ed by + a third-party module. PR 65627. + [acmondor <bz.apache.org acmondor.ca>, Yann Ylavic] + + *) mod_md: Fix memory leak in case of failures to load the private key. + PR 65620 [ Filipe Casal <filipe.casal@trailofbits.com> ] + + *) mod_md: adding v2.4.8 with the following changes + - Added support for ACME External Account Binding (EAB). + Use the new directive `MDExternalAccountBinding` to provide the + server with the value for key identifier and hmac as provided by + your CA. + While working on some servers, EAB handling is not uniform + across CAs. First tests with a Sectigo Certificate Manager in + demo mode are successful. But ZeroSSL, for example, seems to + regard EAB values as a one-time-use-only thing, which makes them + fail if you create a seconde account or retry the creation of the + first account with the same EAB. + - The directive 'MDCertificateAuthority' now checks if its parameter + is a http/https url or one of a set of known names. Those are + 'LetsEncrypt', 'LetsEncrypt-Test', 'Buypass' and 'Buypass-Test' + for now and they are not case-sensitive. + The default of LetsEncrypt is unchanged. + - `MDContactEmail` can now be specified inside a `<MDomain dnsname>` + section. + - Treating 401 HTTP status codes for orders like 403, since some ACME + servers seem to prefer that for accessing oders from other accounts. + - When retrieving certificate chains, try to read the response even + if the HTTP Content-Type is unrecognized. + - Fixed a bug that reset the error counter of a certificate renewal + and prevented the increasing delays in further attempts. + - Fixed the renewal process giving up every time on an already existing + order with some invalid domains. Now, if such are seen in a previous + order, a new order is created for a clean start over again. + See <https://github.com/icing/mod_md/issues/268> + - Fixed a mixup in md-status handler when static certificate files + and renewal was configured at the same time. + + *) mod_md: values for External Account Binding (EAB) can + now also be configured to be read from a separate JSON + file. This allows to keep server configuration permissions + world readable without exposing secrets. + [Stefan Eissing] + + *) mod_proxy_uwsgi: Remove duplicate slashes at the beginning of PATH_INFO. + PR 65616. [Ruediger Pluem] + +Changes with Apache 2.4.51 + + *) SECURITY: CVE-2021-42013: Path Traversal and Remote Code + Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete + fix of CVE-2021-41773) (cve.mitre.org) + It was found that the fix for CVE-2021-41773 in Apache HTTP + Server 2.4.50 was insufficient. An attacker could use a path + traversal attack to map URLs to files outside the directories + configured by Alias-like directives. + If files outside of these directories are not protected by the + usual default configuration "require all denied", these requests + can succeed. If CGI scripts are also enabled for these aliased + paths, this could allow for remote code execution. + This issue only affects Apache 2.4.49 and Apache 2.4.50 and not + earlier versions. + Credits: Reported by Juan Escobar from Dreamlab Technologies, + Fernando Muñoz from NULL Life CTF Team, and Shungo Kumasaka + + *) core: Add ap_unescape_url_ex() for better decoding control, and deprecate + unused AP_NORMALIZE_DROP_PARAMETERS flag. + [Yann Ylavic, Ruediger Pluem, Stefan Eissing, Joe Orton] + +Changes with Apache 2.4.50 + + *) SECURITY: CVE-2021-41773: Path traversal and file disclosure + vulnerability in Apache HTTP Server 2.4.49 (cve.mitre.org) + A flaw was found in a change made to path normalization in + Apache HTTP Server 2.4.49. An attacker could use a path + traversal attack to map URLs to files outside the expected + document root. + If files outside of the document root are not protected by + "require all denied" these requests can succeed. Additionally + this flaw could leak the source of interpreted files like CGI + scripts. + This issue is known to be exploited in the wild. + This issue only affects Apache 2.4.49 and not earlier versions. + Credits: This issue was reported by Ash Daulton along with the + cPanel Security Team + + *) SECURITY: CVE-2021-41524: null pointer dereference in h2 fuzzing + (cve.mitre.org) + While fuzzing the 2.4.49 httpd, a new null pointer dereference + was detected during HTTP/2 request processing, + allowing an external source to DoS the server. This requires a + specially crafted request. + The vulnerability was recently introduced in version 2.4.49. No + exploit is known to the project. + Credits: Apache httpd team would like to thank LI ZHI XIN from + NSFocus Security Team for reporting this issue. + + *) core: AP_NORMALIZE_DECODE_UNRESERVED should normalize the second dot in + the uri-path when it's preceded by a dot. [Yann Ylavic] + + *) mod_md: when MDMessageCmd for a 'challenge-setup:<type>:<dnsname>' + fails (!= 0 exit), the renewal process is aborted and an error is + reported for the MDomain. This provides scripts that distribute + information in a cluster to abort early with bothering an ACME + server to validate a dns name that will not work. The common + retry logic will make another attempt in the future, as with + other failures. + Fixed a bug when adding private key specs to an already working + MDomain, see <https://github.com/icing/mod_md/issues/260>. + [Stefan Eissing] + + *) mod_proxy: Handle UDS URIs with empty hostname ("unix:///...") as if they + had no hostname ("unix:/..."). [Yann Ylavic] + + *) mod_md: fixed a bug in handling multiple parallel OCSP requests. These could + run into an assertion which terminated (and restarted) the child process where + the task was running. Eventually, all OCSP responses were collected, but not + in the way that things are supposed to work. + See also <https://bz.apache.org/bugzilla/show_bug.cgi?id=65567>. + The bug was possibly triggered when more than one OCSP status needed updating + at the same time. For example for several renewed certificates after a server + reload. + + *) mod_rewrite: Fix UDS ("unix:") scheme for [P] rules. PR 57691 + 65590. + [Janne Peltonen <janne.peltonen sange.fi>] + + *) event mpm: Correctly count active child processes in parent process if + child process dies due to MaxConnectionsPerChild. + PR 65592 [Ruediger Pluem] + + *) mod_http2: when a server is restarted gracefully, any idle h2 worker + threads are shut down immediately. + Also, change OpenSSL API use for deprecations in OpenSSL 3.0. + Adds all other, never proposed code changes to make a clean + sync of http2 sources. [Stefan Eissing] + + *) mod_dav: Correctly handle errors returned by dav providers on REPORT + requests. [Ruediger Pluem] + + *) core: do not install core input/output filters on secondary + connections. [Stefan Eissing] + + *) core: Add ap_pre_connection() as a wrapper to ap_run_pre_connection() + and use it to prevent that failures in running the pre_connection + hook cause crashes afterwards. [Ruediger Pluem] + + *) mod_speling: Add CheckBasenameMatch PR 44221. [Christophe Jaillet] + +Changes with Apache 2.4.49 + + *) SECURITY: CVE-2021-40438 (cve.mitre.org) + mod_proxy: Server Side Request Forgery (SSRF) vulnerability [Yann Ylavic] + + *) SECURITY: CVE-2021-39275 (cve.mitre.org) + core: ap_escape_quotes buffer overflow + + *) SECURITY: CVE-2021-36160 (cve.mitre.org) + mod_proxy_uwsgi: Out of bound read vulnerability [Yann Ylavic] + + *) SECURITY: CVE-2021-34798 (cve.mitre.org) + core: null pointer dereference on malformed request + + *) SECURITY: CVE-2021-33193 (cve.mitre.org) + mod_http2: Request splitting vulnerability with mod_proxy [Stefan Eissing] + + *) core/mod_proxy/mod_ssl: + Adding `outgoing` flag to conn_rec, indicating a connection is + initiated by the server to somewhere, in contrast to incoming + connections from clients. + Adding 'ap_ssl_bind_outgoing()` function that marks a connection + as outgoing and is used by mod_proxy instead of the previous + optional function `ssl_engine_set`. This enables other SSL + module to secure proxy connections. + The optional functions `ssl_engine_set`, `ssl_engine_disable` and + `ssl_proxy_enable` are now provided by the core to have backward + compatibility with non-httpd modules that might use them. mod_ssl + itself no longer registers these functions, but keeps them in its + header for backward compatibility. + The core provided optional function wrap any registered function + like it was done for `ssl_is_ssl`. + [Stefan Eissing] + + *) mod_ssl: Support logging private key material for use with + wireshark via log file given by SSLKEYLOGFILE environment + variable. Requires OpenSSL 1.1.1. PR 63391. [Joe Orton] + + *) mod_proxy: Do not canonicalize the proxied URL when both "nocanon" and + "ProxyPassInterpolateEnv On" are configured. PR 65549. + [Joel Self <joelself gmail.com>] + + *) mpm_event: Fix children processes possibly not stopped on graceful + restart. PR 63169. [Joel Self <joelself gmail.com>] + + *) mod_proxy: Fix a potential infinite loop when tunneling Upgrade(d) + protocols from mod_proxy_http, and a timeout triggering falsely when + using mod_proxy_wstunnel, mod_proxy_connect or mod_proxy_http with + upgrade= setting. PRs 65521 and 65519. [Yann Ylavic] + + *) mod_unique_id: Reduce the time window where duplicates may be generated + PR 65159 + [Christophe Jaillet] + + *) mpm_prefork: Block signals for child_init hooks to prevent potential + threads created from there to catch MPM's signals. + [Ruediger Pluem, Yann Ylavic] + + *) Revert "mod_unique_id: Fix potential duplicated ID generation under heavy load. + PR 65159" added in 2.4.47. + This causes issue on Windows. + [Christophe Jaillet] + + *) mod_proxy_uwsgi: Fix PATH_INFO setting for generic worker. [Yann Ylavic] + + *) mod_md: Certificate/keys pairs are verified as matching before a renewal is accepted + as successful or a staged renewal is replacing the existing certificates. + This avoid potential mess ups in the md store file system to render the active + certificates non-working. [@mkauf] + + *) mod_proxy: Faster unix socket path parsing in the "proxy:" URL. + [Yann Ylavic] + + *) mod_ssl: tighten the handling of ALPN for outgoing (proxy) + connections. If ALPN protocols are provided and sent to the + remote server, the received protocol selected is inspected + and checked for a match. Without match, the peer handshake + fails. + An exception is the proposal of "http/1.1" where it is + accepted if the remote server did not answer ALPN with + a selected protocol. This accommodates for hosts that do + not observe/support ALPN and speak http/1.x be default. + + *) mod_proxy: Fix possible reuse/merging of Proxy(Pass)Match worker instances + with others when their URLs contain a '$' substitution. PR 65419 + 65429. + [Yann Ylavic] + + *) mod_dav: Add method_precondition hook. WebDAV extensions define + conditions that must exist before a WebDAV method can be executed. + This hook allows a WebDAV extension to verify these preconditions. + [Graham Leggett] + + *) Add hooks deliver_report and gather_reports to mod_dav.h. Allows other + modules apart from versioning implementations to handle the REPORT method. + [Graham Leggett] + + *) Add dav_get_provider(), dav_open_lockdb(), dav_close_lockdb() and + dav_get_resource() to mod_dav.h. [Graham Leggett] + + *) core: fix ap_escape_quotes substitution logic. [Eric Covener] + + *) core/mpm: add hook 'child_stopping` that gets called when the MPM is + stopping a child process. The additional `graceful` parameter allows + registered hooks to free resources early during a graceful shutdown. + [Yann Ylavic, Stefan Eissing] + + *) mod_proxy: Fix icomplete initialization of BalancerMember(s) from the + balancer-manager, which can lead to a crash. [Yann Ylavic] + + *) mpm_event: Fix graceful stop/restart of children processes if connections + are in lingering close for too long. [Yann Ylavic] + + *) mod_md: fixed a potential null pointer dereference if ACME/OCSP + server returned 2xx responses without content type. Reported by chuangwen. + [chuangwen, Stefan Eissing] + + *) mod_md: + - Domain names in `<MDomain ...>` can now appear in quoted form. + - Fixed a failure in ACME challenge selection that aborted further searches + when the tls-alpn-01 method did not seem to be suitable. + - Changed the tls-alpn-01 setup to only become unsuitable when none of the + dns names showed support for a configured 'Protocols ... acme-tls/1'. This + allows use of tls-alpn-01 for dns names that are not mapped to a VirtualHost. + [Stefan Eissing] + + *) Add CPING to health check logic. [Jean-Frederic Clere] + + *) core: Split ap_create_request() from ap_read_request(). [Graham Leggett] + + *) core, h2: common ap_parse_request_line() and ap_check_request_header() + code. [Yann Ylavic] + + *) core: Add StrictHostCheck to allow unconfigured hostnames to be + rejected. [Eric Covener] + + *) htcacheclean: Improve help messages. [Christophe Jaillet] + +Changes with Apache 2.4.48 + + *) SECURITY: CVE-2021-31618 (cve.mitre.org) + mod_http2: Fix a potential NULL pointer dereference [Ivan Zhakov] + + *) mod_proxy_wstunnel: Add ProxyWebsocketFallbackToProxyHttp to opt-out the + fallback to mod_proxy_http for WebSocket upgrade and tunneling. + [Yann Ylavic] + + *) mod_proxy: Fix flushing of THRESHOLD_MIN_WRITE data while tunneling. + BZ 65294. [Yann Ylavic] + + *) core: Fix a regression that stripped the ETag header from 304 responses. + PR 61820 [Ruediger Pluem, Roy T. Fielding] + + *) core: Adding SSL related inquiry functions to the server API. + These function are always available, even when no module providing + SSL is loaded. They provide their own "shadowing" implementation for + the optional functions of similar name that mod_ssl and impersonators + of mod_ssl provide. + This enables loading of several SSL providing modules when all but + one of them registers itself into the new hooks. Two old-style SSL + modules will not work, as they replace the others optional functions + with their own. + Modules using the old-style optional functions will continue to work + as core supplies its own versions of those. + The following has been added so far: + - ap_ssl_conn_is_ssl() to query if a connection is using SSL. + - ap_ssl_var_lookup() to query SSL related variables for a + server/connection/request. + - Hooks for 'ssl_conn_is_ssl' and 'ssl_var_lookup' where modules + providing SSL can install their own value supplying functions. + - ap_ssl_add_cert_files() to enable other modules like mod_md to provide + certificate and keys for an SSL module like mod_ssl. + - ap_ssl_add_fallback_cert_files() to enable other modules like mod_md to + provide a fallback certificate in case no 'proper' certificate is + available for an SSL module like mod_ssl. + - ap_ssl_answer_challenge() to enable other modules like mod_md to + provide a certificate as used in the RFC 8555 'tls-alpn-01' challenge + for the ACME protocol for an SSL module like mod_ssl. The function + and its hook provide PEM encoded data instead of file names. + - Hooks for 'ssl_add_cert_files', 'ssl_add_fallback_cert_files' and + 'ssl_answer_challenge' where modules like mod_md can provide providers + to the above mentioned functions. + - These functions reside in the new 'http_ssl.h' header file. + [Stefan Eissing] + + *) core/mod_ssl/mod_md: adding OCSP response provisioning as core feature. This + allows modules to access and provide OCSP response data without being tied + of each other. The data is exchanged in standard, portable formats (PEM encoded + certificates and DER encoded responses), so that the actual SSL/crypto + implementations used by the modules are independant of each other. + Registration and retrieval happen in the context of a server (server_rec) + which modules may use to decide if they are configured for this or not. + The area of changes: + 1. core: defines 2 functions in include/http_ssl.h, so that modules may + register a certificate, together with its issuer certificate for OCSP + response provisioning and ask for current response data (DER bytes) later. + Also, 2 hooks are defined that allow modules to implement this OCSP + provisioning. + 2. mod_ssl uses the new functions, in addition to what it did already, to + register its certificates this way. If no one is interested in providing + OCSP, it falls back to its own (if configured) stapling implementation. + 3. mod_md registers itself at the core hooks for OCSP provisioning. Depending + on configuration, it will accept registrations of its own certificates only, + all certificates or none. + [Stefan Eissing] + + *) mod_md: v2.4.0 with improvements and bugfixes + - MDPrivateKeys allows the specification of several types. Beside "RSA" plus + optional key lengths elliptic curves can be configured. This means you can + have multiple certificates for a Managed Domain with different key types. + With ```MDPrivateKeys secp384r1 rsa2048``` you get one ECDSA and one RSA + certificate and all modern client will use the shorter ECDSA, while older + client will get the RSA certificate. + Many thanks to @tlhackque who pushed and helped on this. + - Support added for MDomains consisting of a wildcard. Configuring + ```MDomain *.host.net``` will match all virtual hosts matching that pattern + and obtain one certificate for it (assuming you have 'dns-01' challenge + support configured). Addresses #239. + - Removed support for ACMEv1 servers. The only known installation used to + be Let's Encrypt which has disabled that version more than a year ago for + new accounts. + - Andreas Ulm (<https://github.com/root360-AndreasUlm>) implemented the + ```renewing``` call to ```MDMessageCmd``` that can deny a certificate + renewal attempt. This is useful in clustered installations, as + discussed in #233). + - New event ```challenge-setup:<type>:<domain>```, triggered when the + challenge data for a domain has been created. This is invoked before the + ACME server is told to check for it. The type is one of the ACME challenge + types. This is invoked for every DNS name in a MDomain. + - The max delay for retries has been raised to daily (this is like all + retries jittered somewhat to avoid repeats at fixed time of day). + - Certain error codes reported by the ACME server that indicate a problem + with the configured data now immediately switch to daily retries. For + example: if the ACME server rejects a contact email or a domain name, + frequent retries will most likely not solve the problem. But daily retries + still make sense as there might be an error at the server and un-supervised + certificate renewal is the goal. Refs #222. + - Test case and work around for domain names > 64 octets. Fixes #227. + When the first DNS name of an MD is longer than 63 octets, the certificate + request will not contain a CN field, but leave it up to the CA to choose one. + Currently, Lets Encrypt looks for a shorter name in the SAN list given and + fails the request if none is found. But it is really up to the CA (and what + browsers/libs accept here) and may change over the years. That is why + the decision is best made at the CA. + - Retry delays now have a random +/-[0-50]% modification applied to let + retries from several servers spread out more, should they have been + restarted at the same time of day. + - Fixed several places where the 'badNonce' return code from an ACME server + was not handled correctly. The test server 'pebble' simulates this behaviour + by default and helps nicely in verifying this behaviour. Thanks, pebble! + - Set the default `MDActivationDelay` to 0. This was confusing to users that + new certificates were deemed not usably before a day of delay. When clocks are + correct, using a new certificate right away should not pose a problem. + - When handling ACME authorization resources, the module no longer requires + the server to return a "Location" header, as was necessary in ACMEv1. + Fixes #216. + - Fixed a theoretical uninitialized read when testing for JSON error responses + from the ACME CA. Reported at <https://bz.apache.org/bugzilla/show_bug.cgi?id=64297>. + - ACME problem reports from CAs that include parameters in the Content-Type + header are handled correctly. (Previously, the problem text would not be + reported and retries could exceed CA limits.) + - Account Update transactions to V2 CAs now use the correct POST-AS-GET method. + Previously, an empty JSON object was sent - which apparently LE accepted, + but others reject. + [Stefan Eissing, @tlhackque, Andreas Ulm] + +Changes with Apache 2.4.47 + + *) SECURITY: CVE-2021-30641 (cve.mitre.org) + Unexpected <Location> section matching with 'MergeSlashes OFF' + + *) SECURITY: CVE-2020-35452 (cve.mitre.org) + mod_auth_digest: possible stack overflow by one nul byte while validating + the Digest nonce. [Yann Ylavic] + + *) SECURITY: CVE-2021-26691 (cve.mitre.org) + mod_session: Fix possible crash due to NULL pointer dereference, which + could be used to cause a Denial of Service with a malicious backend + server and SessionHeader. [Yann Ylavic] + + *) SECURITY: CVE-2021-26690 (cve.mitre.org) + mod_session: Fix possible crash due to NULL pointer dereference, which + could be used to cause a Denial of Service. [Yann Ylavic] + + *) SECURITY: CVE-2020-13950 (cve.mitre.org) + mod_proxy_http: Fix possible crash due to NULL pointer dereference, which + could be used to cause a Denial of Service. [Yann Ylavic] + + *) SECURITY: CVE-2020-13938 (cve.mitre.org) + Windows: Prevent local users from stopping the httpd process [Ivan Zhakov] + + *) SECURITY: CVE-2019-17567 (cve.mitre.org) + mod_proxy_wstunnel, mod_proxy_http: Handle Upgradable protocols end-to-end + negotiation. [Yann Ylavic] + + *) mod_dav_fs: Improve logging output when failing to open files for + writing. PR 64413. [Bingyu Shen <ahshenbingyu gmail.com>] + + *) mod_http2: Fixed a race condition that could lead to streams being + aborted (RST to the client), although a response had been produced. + [Stefan Eissing] + + *) mod_lua: Add support to Lua 5.4 [Joe Orton, Giovanni Bechis, Ruediger Pluem] + + *) MPM event/worker: Fix possible crash in child process on early signal + delivery. PR 64533. [Ruediger Pluem] + + *) mod_http2: sync with github standalone version 1.15.17 + - Log requests and sent the configured error response in case of early detected + errors like too many or too long headers. [Ruediger Pluem] + - new option 'H2OutputBuffering on/off' which controls the buffering of stream output. + The default is on, which is the behaviour of older mod-h2 versions. When off, all + bytes are made available immediately to the main connection for sending them + out to the client. This fixes interop issues with certain flavours of gRPC, see + also <https://github.com/icing/mod_h2/issues/207>. + [Stefan Eissing] + + *) mod_unique_id: Fix potential duplicated ID generation under heavy load. + PR 65159 + [Jonas Müntener <jonas.muentener ergon.ch>, Christophe Jaillet] + + *) "[mod_dav_fs etag handling] should really honor the FileETag setting". + - It now does. + - Add "Digest" to FileETag directive, allowing a strong ETag to be + generated using a file digest. + - Add ap_make_etag_ex() and ap_set_etag_fd() to allow full control over + ETag generation. + - Add concept of "binary notes" to request_rec, allowing packed bit flags + to be added to a request. + - First binary note - AP_REQUEST_STRONG_ETAG - allows modules to force + the ETag to a strong ETag to comply with RFC requirements, such as those + mandated by various WebDAV extensions. + [Graham Leggett] + + *) mod_proxy_http: Fix a possibly crash when the origin connection gets + interrupted before completion. PR 64234. + [Barnim Dzwillo <dzwillo strato.de>, Ruediger Pluem] + + *) mod_ssl: Do not keep connections to OCSP responders alive when doing + OCSP requests. PR 64135. [Ruediger Pluem] + + *) mod_ssl: Improve the coalescing filter to buffer into larger TLS + records, and avoid revealing the HTTP header size via TLS record + boundaries (for common response generators). + [Joe Orton, Ruediger Pluem] + + *) mod_proxy_hcheck: Don't pile up health checks if the previous one did + not finish before hcinterval. PR 63010. [Yann Ylavic] + + *) mod_session: Improve session parsing. [Yann Yalvic] + + *) mod_authnz_ldap: Prevent authentications with empty passwords for the + initial bind to fail with status 500. [Ruediger Pluem] + + *) mod_proxy_fcgi: Honor "SetEnv proxy-sendcl" to forward a chunked + Transfer-Encoding from the client, spooling the request body when needed + to provide a Content-Length to the backend. PR 57087. [Yann Ylavic] + + *) mod_proxy: Improve tunneling loop to support half closed connections and + pending data draining (for protocols like rsync). PR 61616. [Yann Ylavic] + + *) mod_proxy_wstunnel: Leave Upgrade requests handling to mod_proxy_http, + allowing for (non-)Upgrade negotiation with the origin server. + [Yann Ylavic] + + *) mod_proxy: Allow ProxyErrorOverride to be restricted to specific status + codes. PR63628. [Martin Drößler <mail martindroessler.de>] + + *) core: Add ReadBufferSize, FlushMaxThreshold and FlushMaxPipelined + directives. [Yann Ylavic] + + *) core: Ensure that aborted connections are logged as such. PR 62823 + [Arnaud Grandville <contact@grandville.net>] + + *) http: Allow unknown response status' lines returned in the form of + "HTTP/x.x xxx Status xxx". [Yann Ylavic] + + *) mod_proxy_http: Fix 100-continue deadlock for spooled request bodies, + leading to Request Timeout (408). PR 63855. [Yann Ylavic] + + *) core: Remove headers on 304 Not Modified as specified by RFC7234, as + opposed to passing an explicit subset of headers. PR 61820. + [Giovanni Bechis] + + *) mpm_event: Don't reset connections after lingering close, restoring prior + to 2.4.28 behaviour. [Yann Ylavic] + + *) mpm_event: Kill connections in keepalive state only when there is no more + workers available, not when the maximum number of connections is reached, + restoring prior to 2.4.30 behaviour. [Yann Ylavic] + + *) mod_unique_id: Use base64url encoding for UNIQUE_ID variable, + avoiding the use of '@'. PR 57044. + [Michael Kaufmann <apache-bugzilla michael-kaufmann.ch>] + + *) mod_rewrite: Extend the [CO] (cookie) flag of RewriteRule to accept a + SameSite attribute. [Eric Covener] + + *) mod_proxy: Add proxy check_trans hook. This allows proxy + modules to decline request handling at early stage. + + *) mod_proxy_wstunnel: Decline requests without an Upgrade + header so ws/wss can be enabled overlapping with later + http/https. + + *) mod_http2: Log requests and sent the configured error response in case of + early detected errors like too many or too long headers. + [Ruediger Pluem, Stefan Eissing] + + *) mod_md: Lowered the required minimal libcurl version from 7.50 to 7.29 + as proposed by <alexander.gerasimov codeit.pro>. [Stefan Eissing] + + *) mod_ssl: Fix request body buffering with PHA in TLSv1.3. [Joe Orton] + + *) mod_proxy_uwsgi: Fix a crash when sending environment variables with no + value. PR 64598 [Ruediger Pluem] + + *) mod_proxy: Recognize parameters from ProxyPassMatch workers with dollar + substitution, such that they apply to the backend connection. Note that + connection reuse is disabled by default to avoid compatibility issues. + [Takashi Sato, Jan Kaluza, Eric Covener, Yann Ylavic, Jean-Frederic Clere] + +Changes with Apache 2.4.46 + + *) SECURITY: CVE-2020-11984 (cve.mitre.org) + mod_proxy_uwsgi: Malicious request may result in information disclosure + or RCE of existing file on the server running under a malicious process + environment. [Yann Ylavic] + + *) SECURITY: CVE-2020-11993 (cve.mitre.org) + mod_http2: when throttling connection requests, log statements + where possibly made that result in concurrent, unsafe use of + a memory pool. [Stefan Eissing] + + *) SECURITY: CVE-2020-9490 (cve.mitre.org) + mod_http2: a specially crafted value for the 'Cache-Digest' header + request would result in a crash when the server actually tries + to HTTP/2 PUSH a resource afterwards. [Stefan Eissing] + + *) mod_proxy_fcgi: Fix missing APLOGNO macro argument + [Eric Covener, Christophe Jaillet] + +Changes with Apache 2.4.45 + + *) mod_http2: remove support for abandoned http-wg draft + <https://datatracker.ietf.org/doc/draft-kazuho-h2-cache-digest/>. + [Stefan Eissing] + +Changes with Apache 2.4.44 + + *) mod_proxy_uwsgi: Error out on HTTP header larger than 16K (hard + protocol limit). [Yann Ylavic] + + *) mod_http2: + Fixes <https://github.com/icing/mod_h2/issues/200>: + "LimitRequestFields 0" now disables the limit, as documented. + Fixes <https://github.com/icing/mod_h2/issues/201>: + Do not count repeated headers with same name against the field + count limit. The are merged internally, as if sent in a single HTTP/1 line. + [Stefan Eissing] + + *) mod_http2: Avoid segfaults in case of handling certain responses for + already aborted connections. [Stefan Eissing, Ruediger Pluem] + + *) mod_http2: The module now handles master/secondary connections and has marked + methods according to use. [Stefan Eissing] + + *) core: Drop an invalid Last-Modified header value coming + from a FCGI/CGI script instead of replacing it with Unix epoch. + [Yann Ylavic, Luca Toscano] + + *) Add support for strict content-length parsing through addition of + ap_parse_strict_length() [Yann Ylavic] + + *) mod_proxy_fcgi: ProxyFCGISetEnvIf unsets variables when expression + evaluates to false. PR64365. [Michael König <mail ikoenig.net>] + + *) mod_proxy_http: flush spooled request body in one go to avoid + leaking (or long lived) temporary file. PR 64452. [Yann Ylavic] + + *) mod_ssl: Fix a race condition and possible crash when using a proxy client + certificate (SSLProxyMachineCertificateFile). + [Armin Abfalterer <a.abfalterer gmail.com>] + + *) mod_ssl: Fix memory leak in stapling code. PR63687. [Stefan Eissing] + + *) mod_http2: Fixed regression that no longer set H2_STREAM_ID and H2_STREAM_TAG. + PR64330 [Stefan Eissing] + + *) mod_http2: Fixed regression that caused connections to close when mod_reqtimeout + was configured with a handshake timeout. Fixes gitub issue #196. + [Stefan Eissing] + + *) mod_proxy_http2: the "ping" proxy parameter + (see <https://httpd.apache.org/docs/2.4/mod/mod_proxy.html>) is now used + when checking the liveliness of a new or reused h2 connection to the backend. + With short durations, this makes load-balancing more responsive. The module + will hold back requests until ping conditions are met, using features of the + HTTP/2 protocol alone. [Ruediger Pluem, Stefan Eissing] + + *) core: httpd is no longer linked against -lsystemd if mod_systemd + is enabled (and built as a DSO). [Rainer Jung] + + *) mod_proxy_http2: respect ProxyTimeout settings on backend connections + while waiting on incoming data. [Ruediger Pluem, Stefan Eissing] + +Changes with Apache 2.4.43 + + *) mod_ssl: Fix memory leak of OCSP stapling response. [Yann Ylavic] + +Changes with Apache 2.4.42 + + *) SECURITY: CVE-2020-1934 (cve.mitre.org) + mod_proxy_ftp: Use of uninitialized value with malicious backend FTP + server. [Eric Covener] + + *) SECURITY: CVE-2020-1927 (cve.mitre.org) + rewrite, core: Set PCRE_DOTALL flag by default to avoid unpredictable + matches and substitutions with encoded line break characters. + The fix for CVE-2019-10098 was not effective. [Ruediger Pluem] + + *) mod_proxy_http: Fix the forwarding of requests with content body when a + balancer member is unavailable; the retry on the next member was issued + with an empty body (regression introduced in 2.4.41). PR63891. + [Yann Ylavic] + + *) core: Use a temporary file when writing the pid file, avoiding + startup failure if an empty pidfile is left over from a + previous crashed or aborted invocation of httpd. PR 63140. + [Nicolas Carrier <carrier.nicolas0 gmail.com>, Joe Orton] + + *) mod_http2: Fixes issue where mod_unique_id would generate non-unique request + identifier under load, see <https://github.com/icing/mod_h2/issues/195>. + [Michael Kaufmann, Stefan Eissing] + + *) mod_proxy_hcheck: Allow healthcheck expressions to use %{Content-Type}. + PR64140. [Renier Velazco <renier.velazco upr.edu>] + + *) mod_authz_groupfile: Drop AH01666 from loglevel "error" to "info". + PR64172. + + *) mod_usertrack: Add CookieSameSite, CookieHTTPOnly, and CookieSecure + to allow customization of the usertrack cookie. PR64077. + [Prashant Keshvani <prashant2400 gmail.com>, Eric Covener] + + *) mod_proxy_ajp: Add "secret" parameter to proxy workers to implement legacy + AJP13 authentication. PR 53098. [Dmitry A. Bakshaev <dab1818 gmail com>] + + *) mpm_event: avoid possible KeepAliveTimeout off by -100 ms. + [Eric Covener, Yann Ylavic] + + *) Add a config layout for OpenWRT. [Graham Leggett] + + *) Add support for cross compiling to apxs. If apxs is being executed from + somewhere other than its target location, add that prefix to includes and + library directories. Without this, apxs would fail to find config_vars.mk + and exit. [Graham Leggett] + + *) mod_ssl: Disable client verification on ACME ALPN challenges. Fixes github + issue mod_md#172 (https://github.com/icing/mod_md/issues/172). + [Michael Kaufmann <mail michael-kaufmann.ch>, Stefan Eissing] + + *) mod_ssl: use OPENSSL_init_ssl() to initialise OpenSSL on versions 1.1+. + [Graham Leggett] + + *) mod_ssl: Support use of private keys and certificates from an + OpenSSL ENGINE via PKCS#11 URIs in SSLCertificateFile/KeyFile. + [Anderson Sasaki <ansasaki redhat.com>, Joe Orton] + + *) mod_md: + - Prefer MDContactEmail directive to ServerAdmin for registration. New directive + thanks to Timothe Litt (@tlhackque). + - protocol check for pre-configured "tls-alpn-01" challenge has been improved. It will now + check all matching virtual hosts for protocol support. Thanks to @mkauf. + - Corrected a check when OCSP stapling was configured for hosts + where the responsible MDomain is not clear, by Michal Karm Babacek (@Karm). + - Softening the restrictions where mod_md configuration directives may appear. This should + allow for use in <If> and <Macro> sections. If all possible variations lead to the configuration + you wanted in the first place, is another matter. + [Michael Kaufmann <mail michael-kaufmann.ch>, Timothe Litt (@tlhackque), + Michal Karm Babacek (@Karm), Stefan Eissing (@icing)] + + *) test: Added continuous testing with Travis CI. + This tests various scenarios on Ubuntu with the full test suite. + Architectures tested: amd64, s390x, ppc64le, arm64 + The tests pass successfully. + [Luca Toscano, Joe Orton, Mike Rumph, and others] + + *) core: Be stricter in parsing of Transfer-Encoding headers. + [ZeddYu <zeddyu.lu gmail.com>, Eric Covener] + + *) mod_ssl: negotiate the TLS protocol version per name based vhost + configuration, when linked with OpenSSL-1.1.1 or later. The base vhost's + SSLProtocol (from the first vhost declared on the IP:port) is now only + relevant if no SSLProtocol is declared for the vhost or globally, + otherwise the vhost or global value apply. [Yann Ylavic] + + *) mod_cgi, mod_cgid: Fix a memory leak in some error cases with large script + output. PR 64096. [Joe Orton] + + *) config: Speed up graceful restarts by using pre-hashed command table. PR 64066. + [Giovanni Bechis <giovanni paclan.it>, Jim Jagielski] + + *) mod_systemd: New module providing integration with systemd. [Jan Kaluza] + + *) mod_lua: Add r:headers_in_table, r:headers_out_table, r:err_headers_out_table, + r:notes_table, r:subprocess_env_table as read-only native table alternatives + that can be iterated over. [Eric Covener] + + *) mod_http2: Fixed rare cases where a h2 worker could deadlock the main connection. + [Yann Ylavic, Stefan Eissing] + + *) mod_lua: Accept nil assignments to the exposed tables (r.subprocess_env, + r.headers_out, etc) to remove the key from the table. PR63971. + [Eric Covener] + + *) mod_http2: Fixed interaction with mod_reqtimeout. A loaded mod_http2 was disabling the + ssl handshake timeouts. Also, fixed a mistake of the last version that made `H2Direct` + always `on`, regardless of configuration. Found and reported by + <Armin.Abfalterer@united-security-providers.ch> and + <Marcial.Rion@united-security-providers.ch>. [Stefan Eissing] + + *) mod_http2: Multiple field length violations in the same request no longer cause + several log entries to be written. [@mkauf] + + *) mod_ssl: OCSP does not apply to proxy mode. PR 63679. + [Lubos Uhliarik <luhliari redhat.com>, Yann Ylavic] + + *) mod_proxy_html, mod_xml2enc: Fix build issues with macOS due to r1864469 + [Jim Jagielski] + + *) mod_authn_socache: Increase the maximum length of strings that can be cached by + the module from 100 to 256. PR 62149 [<thorsten.meinl knime.com>] + + *) mod_proxy: Fix crash by resolving pool concurrency problems. PR 63503 + [Ruediger Pluem, Eric Covener] + + *) core: On Windows, fix a start-up crash if <IfFile ...> is used with a path that is not + valid (For example, testing for a file on a flash drive that is not mounted) + [Christophe Jaillet] + + *) mod_deflate, mod_brotli: honor "Accept-Encoding: foo;q=0" as per RFC 7231; which + means 'foo' is "not acceptable". PR 58158 [Chistophe Jaillet] + + *) mod_md v2.2.3: + - Configuring MDCAChallenges replaces any previous existing challenge configuration. It + had been additive before which was not the intended behaviour. [@mkauf] + - Fixing order of ACME challenges used when nothing else configured. Code now behaves as + documented for `MDCAChallenges`. Fixes #156. Thanks again to @mkauf for finding this. + - Fixing a potential, low memory null pointer dereference [thanks to @uhliarik]. + - Fixing an incompatibility with a change in libcurl v7.66.0 that added unwanted + "transfer-encoding" to POST requests. This failed in direct communication with + Let's Encrypt boulder server. Thanks to @mkauf for finding and fixing. [Stefan Eissing] + + *) mod_md: Adding the several new features. + The module offers an implementation of OCSP Stapling that can replace fully or + for a limited set of domains the existing one from mod_ssl. OCSP handling + is part of mod_md's monitoring and message notifications. If can be used + for sites that do not have ACME certificates. + The url for a CTLog Monitor can be configured. It is used in the server-status + to link to the external status page of a certificate. + The MDMessageCmd is called with argument "installed" when a new certificate + has been activated on server restart/reload. This allows for processing of + the new certificate, for example to applications that require it in different + locations or formats. + [Stefan Eissing] + + *) mod_proxy_balancer: Fix case-sensitive referer check related to CSRF/XSS + protection. PR 63688. [Armin Abfalterer <a.abfalterer gmail.com>] + +Changes with Apache 2.4.41 + + *) SECURITY: CVE-2019-10097 (cve.mitre.org) + mod_remoteip: Fix stack buffer overflow and NULL pointer deference + when reading the PROXY protocol header. [Joe Orton, + Daniel McCarney <cpu letsencrypt.org>] + + *) SECURITY: CVE-2019-9517 (cve.mitre.org) + mod_http2: a malicious client could perform a DoS attack by flooding + a connection with requests and basically never reading responses + on the TCP connection. Depending on h2 worker dimensioning, it was + possible to block those with relatively few connections. [Stefan Eissing] + + *) SECURITY: CVE-2019-10098 (cve.mitre.org) + rewrite, core: Set PCRE_DOTALL flag by default to avoid unpredictable + matches and substitutions with encoded line break characters. + [Yann Ylavic] + + *) SECURITY: CVE-2019-10092 (cve.mitre.org) + Remove HTML-escaped URLs from canned error responses to prevent misleading + text/links being displayed via crafted links. [Eric Covener] + + *) SECURITY: CVE-2019-10082 (cve.mitre.org) + mod_http2: Using fuzzed network input, the http/2 session + handling could be made to read memory after being freed, + during connection shutdown. [Stefan Eissing] + + *) SECURITY: CVE-2019-10081 (cve.mitre.org) + mod_http2: HTTP/2 very early pushes, for example configured with "H2PushResource", + could lead to an overwrite of memory in the pushing request's pool, + leading to crashes. The memory copied is that of the configured push + link header values, not data supplied by the client. [Stefan Eissing] + + *) mod_proxy_balancer: Improve balancer-manager protection against + XSS/XSRF attacks from trusted users. [Joe Orton, + Niels Heinen <heinenn google.com>] + + *) mod_session: Introduce SessionExpiryUpdateInterval which allows to + configure the session/cookie expiry's update interval. PR 57300. + [Paul Spangler <paul.spangler ni.com>] + + *) modules/filters: Fix broken compilation when using old GCC (<4.2.x). + PR 63633. [Rainer Jung, Joe Orton] + + *) mod_ssl: Fix startup failure in 2.4.40 with SSLCertificateChainFile + configured for a domain managed by mod_md. [Stefan Eissing] + +Changes with Apache 2.4.40 + + *) core, mod_rewrite: Set PCRE_DOTALL by default. Revert via + RegexDefaultOptions -DOTALL [Yann Ylavic] + + *) core: Remove request details from built-in error documents [Eric Covener] + + *) mod_http2: core setting "LimitRequestFieldSize" is not additionally checked on + merged header fields, just as HTTP/1.1 does. [Stefan Eissing, Michael Kaufmann] + + *) mod_http2: fixed a bug that prevented proper stream cleanup when connection + throttling was in place. Stream resets by clients on streams initiated by them + are counted as possible trigger for throttling. [Stefan Eissing] + + *) mod_http2/mpm_event: Fixes the behaviour when a HTTP/2 connection has nothing + more to write with streams ongoing (flow control block). The timeout waiting + for the client to send WINODW_UPDATE was incorrectly KeepAliveTimeout and not + Timeout as it should be. Fixes PR 63534. [Yann Ylavic, Stefan Eissing] + + *) mod_proxy_balancer: Load balancer required byrequests when bytraffic chosen. + PR 62372. [Jim Jagielski] + + *) mod_proxy_hcheck: Create the configuration for mod_proxy_hcheck + when used in BalancerMember. PR 60757. [Jean-Frederic Clere] + + *) mod_proxy_hcheck: Mute extremely frequent debug message. [Yann Ylavic] + + *) mod_ssl/mod_md: reversing dependency by letting mod_ssl offer hooks for + adding certificates and keys to a virtual host. An additional hook allows + answering special TLS connections as used in ACME challenges. + Adding 2 new hooks for init/get of OCSP stapling status information when + other modules want to provide those. Falls back to own implementation with + same behaviour as before. + [Stefan Eissing] + + *) mod_md: new features + - protocol + - supports the ACMEv2 protocol. It is the default and will be used on the next + certificate renewal, unless another "MDCertificateAuthority" is configured + - ACMEv2 endpoints use the GET via empty POST way of accessing resources, see + announcement by Let's Encrypt: + https://community.letsencrypt.org/t/acme-v2-scheduled-deprecation-of-unauthenticated-resource-gets/74380 + - challenges + - new challenge method 'tls-alpn-01' implemented + - challenge type 'tls-sni-01' has been removed as CAs do not offer this any longer + - supports command configuration to setup/teardown 'dns-01' challenges + - supports wildcard certificates when dns challenges are configured + - status information and monitoring + - a domain exposes its status at https://<domain>/.httpd/certificate-status + - Managed Domains are now in Apache's 'server-status' page + - A new handler 'md-status' exposes verbose status information in JSON format + - new directives + - "MDCertificateFile" and "MDCertificateKeyFile" to configure a + Managed Domain that uses static files. Auto-renewal is turned off for those. + - "MDMessageCmd" that is invoked on several events: 'renewed', 'expiring' and + 'errored'. + - "MDWarnWindow" directive to configure when expiration warnings shall be issued. + [Stefan Eissing] + + *) mod_mime_magic: Fix possible corruption of returned strings. + [Christophe Jaillet] + + *) Default "conf/magic": Fix pattern for "audio/x-wav" for WAV files, + remove "audio/unknown" pattern for other RIFF files. + [Àngel Ollé Blázquez <aollebla redhat.com>] + + *) mod_proxy_http2: fixing a potential NULL pointer use in logging. + [Christophe Jaillet, Dr Silvio Cesare InfoSect] + + *) mod_dav: Reduce the amount of memory needed when doing PROPFIND's on large + collections by improving the memory management. [Joe Orton, Ruediger Pluem] + + *) mod_proxy_http2: adding support for handling trailers in both directions. + PR 63502. [Stefan Eissing] + + *) mod_proxy_http: forward 100-continue, and minimize race conditions when + reusing backend connections. PR 60330. [Yann Ylavic, Jean-Frederic Clere] + + *) mod_proxy_balancer: Fix some HTML syntax issues. [Christophe Jaillet] + + *) When using mod_status with the Event MPM, report the number of requests + associated with an active connection in the "ACC" field. Previously + zero was always reported with this MPM. PR60647. [Eric Covener] + + *) mod_http2: remove the no longer existing h2_ngn_shed.c from Cmake. + [Stefan Eissing] + + *) mod_proxy/ssl: Proxy SSL client certificate configuration and other proxy + SSL configurations broken inside <Proxy> context. PR 63430. + [Ruediger Pluem, Yann Ylavic] + + *) mod_proxy: allow SSLProxyCheckPeer* usage for all proxy modules. + PR 61857. [Markus Gausling <markusgausling googlemail.com>, Yann Ylavic] + + *) mod_reqtimeout: Fix default rates missing (not applied) in 2.4.39. + PR 63325. [Yann Ylavic] + + *) mod_info: Fix output of server settings for PIPE_BUF in mod_info in + the rare case that PIPE_BUF is defined. [Rainer Jung] + + *) mod_md: Store permissions are enforced on file creation, enforcing restrictions in + spite of umask. Fixes <https://github.com/icing/mod_md/issues/117>. [Stefan Eissing] + +Changes with Apache 2.4.39 + + *) SECURITY: CVE-2019-0197 (cve.mitre.org) + mod_http2: fixes a possible crash when HTTP/2 was enabled for a http: + host or H2Upgrade was enabled for h2 on a https: host. An Upgrade + request from http/1.1 to http/2 that was not the first request on a + connection could lead to a misconfiguration and crash. Servers that + never enabled the h2 protocol or only enabled it for https: and + did not set "H2Upgrade on" are unaffected by this issue. + [Stefan Eissing] + + *) SECURITY: CVE-2019-0196 (cve.mitre.org) + mod_http2: using fuzzed network input, the http/2 request + handling could be made to access freed memory in string + comparison when determining the method of a request and + thus process the request incorrectly. [Stefan Eissing] + + *) SECURITY: CVE-2019-0211 (cve.mitre.org) + MPMs unix: Fix a local privilege escalation vulnerability by not + maintaining each child's listener bucket number in the scoreboard, + preventing unprivileged code like scripts run by/on the server (e.g. via + mod_php) from modifying it persistently to abuse the privileged main + process. [Charles Fol <folcharles gmail.com>, Yann Ylavic] + + *) SECURITY: CVE-2019-0217 (cve.mitre.org) + mod_auth_digest: Fix a race condition checking user credentials which + could allow a user with valid credentials to impersonate another, + under a threaded MPM. PR 63124. [Simon Kappel <simon.kappel axis.com>] + + *) SECURITY: CVE-2019-0215 (cve.mitre.org) + mod_ssl: Fix access control bypass for per-location/per-dir client + certificate verification in TLSv1.3. + + *) SECURITY: CVE-2019-0220 (cve.mitre.org) + Merge consecutive slashes in URL's. Opt-out with + `MergeSlashes OFF`. [Eric Covener] + + *) mod_proxy/ssl: Cleanup per-request SSL configuration anytime a backend + connection is recycled/reused to avoid a possible crash with some SSLProxy + configurations in <Location> or <Proxy> context. PR 63256. [Yann Ylavic] + + *) mod_log_config: Support %{c}h for conn-hostname, %h for useragent_host + PR 55348 + + *) mod_socache_redis: Support for Redis as socache storage provider. + + *) core: new configuration option 'MergeSlashes on|off' that controls handling of + multiple, consecutive slash ('/') characters in the path component of the request URL. + [Eric Covener] + + *) mod_http2: when SSL renegotiation is inhibited and a 403 ErrorDocument is + in play, the proper HTTP/2 stream reset did not trigger with H2_ERR_HTTP_1_1_REQUIRED. + Fixed. [Michael Kaufmann] + + *) mod_http2: new configuration directive: `H2Padding numbits` to control + padding of HTTP/2 payload frames. 'numbits' is a number from 0-8, + controlling the range of padding bytes added to a frame. The actual number + added is chosen randomly per frame. This applies to HEADERS, DATA and PUSH_PROMISE + frames equally. The default continues to be 0, e.g. no padding. [Stefan Eissing] + + *) mod_http2: ripping out all the h2_req_engine internal features now that mod_proxy_http2 + has no more need for it. Optional functions are still declared but no longer implemented. + While previous mod_proxy_http2 will work with this, it is recommended to run the matching + versions of both modules. [Stefan Eissing] + + *) mod_proxy_http2: changed mod_proxy_http2 implementation and fixed several bugs which + resolve PR63170. The proxy module does now a single h2 request on the (reused) + connection and returns. [Stefan Eissing] + + *) mod_http2/mod_proxy_http2: proxy_http2 checks correct master connection aborted status + to trigger immediate shutdown of backend connections. This is now always signalled + by mod_http2 when the the session is being released. + proxy_http2 now only sends a PING frame to the backend when there is not already one + in flight. [Stefan Eissing] + + *) mod_proxy_http2: fixed an issue where a proxy_http2 handler entered an infinite + loop when encountering certain errors on the backend connection. + See <https://bz.apache.org/bugzilla/show_bug.cgi?id=63170>. [Stefan Eissing] + + *) mod_http2: Configuration directives H2Push and H2Upgrade can now be specified per + Location/Directory, e.g. disabling PUSH for a specific set of resources. [Stefan Eissing] + + *) mod_http2: HEAD requests to some module such as mod_cgid caused the stream to + terminate improperly and cause a HTTP/2 PROTOCOL_ERROR. + Fixes <https://github.com/icing/mod_h2/issues/167>. [Michael Kaufmann] + + *) http: Fix possible empty response with mod_ratelimit for HEAD requests. + PR 63192. [Yann Ylavic] + + *) mod_cache_socache: Avoid reallocations and be safe with outgoing data + lifetime. [Yann Ylavic] + + *) mod_http2: enable re-use of slave connections again. Fixed slave connection + keepalives counter. [Stefan Eissing] + + *) mod_reqtimeout: Allow to configure (TLS-)handshake timeouts. + PR 61310. [Yann Ylavic] + + *) core: Split out the ability to parse wildcard files and directories + from the Include/IncludeOptional directives into a generic set of + functions ap_dir_nofnmatch() and ap_dir_fnmatch(). [Graham Leggett] + + *) mod_proxy_wstunnel: Fix websocket proxy over UDS. + PR 62932 <pavel dcmsys.com> + + *) mod_ssl: Don't unset FIPS mode on restart unless it's forced by + configuration (SSLFIPS on) and not active by default in OpenSSL. + PR 63136. [Yann Ylavic] + +Changes with Apache 2.4.38 + + *) SECURITY: CVE-2018-17199 (cve.mitre.org) + mod_session: mod_session_cookie does not respect expiry time allowing + sessions to be reused. [Hank Ibell] + + *) SECURITY: CVE-2018-17189 (cve.mitre.org) + mod_http2: fixes a DoS attack vector. By sending slow request bodies + to resources not consuming them, httpd cleanup code occupies a server + thread unnecessarily. This was changed to an immediate stream reset + which discards all stream state and incoming data. [Stefan Eissing] + + *) SECURITY: CVE-2019-0190 (cve.mitre.org) + mod_ssl: Fix infinite loop triggered by a client-initiated + renegotiation in TLSv1.2 (or earlier) with OpenSSL 1.1.1 and + later. PR 63052. [Joe Orton] + + *) mod_ssl: Clear retry flag before aborting client-initiated renegotiation. + PR 63052 [Joe Orton] + + *) mod_negotiation: Treat LanguagePriority as case-insensitive to match + AddLanguage behavior and HTTP specification. PR 39730 [Christophe Jaillet] + + *) mod_md: incorrect behaviour when synchronizing ongoing ACME challenges + have been fixed. [Michael Kaufmann, Stefan Eissing] + + *) mod_setenvif: We can have expressions that become true if a regex pattern + in the expression does NOT match. In this case val is NULL + and we should just set the value for the environment variable + like in the pattern case. [Ruediger Pluem] + + *) mod_session: Always decode session attributes early. [Hank Ibell] + + *) core: Incorrect values for environment variables are substituted when + multiple environment variables are specified in a directive. [Hank Ibell] + + *) mod_rewrite: Only create the global mutex used by "RewriteMap prg:" when + this type of map is present in the configuration. PR62311. + [Hank Ibell <hwibell gmail.com>] + + *) mod_dav: Fix invalid Location header when a resource is created by + passing an absolute URI on the request line [Jim Jagielski] + + *) mod_session_cookie: avoid duplicate Set-Cookie header in the response. + [Emmanuel Dreyfus <manu@netbsd.org>, Luca Toscano] + + *) mod_ssl: clear *SSL errors before loading certificates and checking + afterwards. Otherwise errors are reported when other SSL using modules + are in play. Fixes PR 62880. [Michael Kaufmann] + + *) mod_ssl: Fix the error code returned in an error path of + 'ssl_io_filter_handshake()'. This messes-up error handling performed + in 'ssl_io_filter_error()' [Yann Ylavic] + + *) mod_ssl: Fix $HTTPS definition for "SSLEngine optional" case, and fix + authz provider so "Require ssl" works correctly in HTTP/2. + PR 61519, 62654. [Joe Orton, Stefan Eissing] + + *) mod_proxy: If ProxyPassReverse is used for reverse mapping of relative + redirects, subsequent ProxyPassReverse statements, whether they are + relative or absolute, may fail. PR 60408. [Peter Haworth <pmh1wheel gmail.com>] + + *) mod_lua: Now marked as a stable module [https://s.apache.org/Xnh1] + +Changes with Apache 2.4.37 + + *) mod_ssl: Fix HTTP/2 failures when using OpenSSL 1.1.1. [Rainer Jung] + + *) mod_ssl: Fix crash during SSL renegotiation with OptRenegotiate set, + when client certificates are available from the original handshake + but were originally not verified and should get verified now. + This is a regression in 2.4.36 (unreleased). [Ruediger Pluem] + + *) mod_ssl: Correctly merge configurations that have client certificates set + by SSLProxyMachineCertificate{File|Path}. [Ruediger Pluem] + +Changes with Apache 2.4.36 + + *) mod_brotli, mod_deflate: Restore the separate handling of 304 Not Modified + responses. Regression introduced in 2.4.35. + + *) mod_proxy_scgi, mod_proxy_uwsgi: improve error handling when sending the + body of the response. [Jim Jagielski] + + *) mpm_event: Stop issuing AH00484 "server reached MaxRequestWorkers..." when + there are still idle threads available. When there are less idle threads than + MinSpareThreads, issue new one-time message AH10159. Matches worker MPM. + [Eric Covener] + + *) mod_http2: adding defensive code for stream EOS handling, in case the request handler + missed to signal it the normal way (eos buckets). Addresses github issues + https://github.com/icing/mod_h2/issues/164, https://github.com/icing/mod_h2/issues/167 + and https://github.com/icing/mod_h2/issues/170. [Stefan Eissing] + + *) ab: Add client certificate support. PR 55774. [Graham Leggett] + + *) ab: Disable printing temp key for OpenSSL before + version 1.0.2. SSL_get_server_tmp_key is not available + there. [Rainer Jung] + + *) mod_ssl: Fix a regression that the configuration settings for verify mode + and verify depth were taken from the frontend connection in case of + connections by the proxy to the backend. PR 62769. [Ruediger Pluem] + + *) MPMs: Initialize all runtime/asynchronous objects on a dedicated pool and + before signals handling to avoid lifetime issues on restart or shutdown. + PR 62658. [Yann Ylavic] + + *) mod_ssl: Add support for OpenSSL 1.1.1 and TLSv1.3. TLSv1.3 has + behavioural changes compared to v1.2 and earlier; client and + configuration changes should be expected. SSLCipherSuite is + enhanced for TLSv1.3 ciphers, but applies at vhost level only. + [Stefan Eissing, Yann Ylavic, Ruediger Pluem, Joe Orton] + + *) mod_auth_basic: Be less tolerant when parsing the credencial. Only spaces + should be accepted after the authorization scheme. \t are also tolerated. + [Christophe Jaillet] + + *) mod_socache_redis: New socache submodule provider to allow use + of Redis as storage backend. [Jim Jagielski] + + *) mod_proxy_hcheck: Fix issues with interval determination. PR 62318 + [Jim Jagielski] + + *) mod_proxy_hcheck: Fix issues with TCP health checks. PR 61499 + [Dominik Stillhard <dominik.stillhard united-security-providers.ch>] + + *) mod_proxy_hcheck: take balancer's SSLProxy* directives into account. + [Jim Jagielski] + + *) mod_status, mod_echo: Fix the display of client addresses. + They were truncated to 31 characters which is not enough for IPv6 addresses. + This is done by deprecating the use of the 'client' field and using + the new 'client64' field in worker_score. + PR 54848 [Bernhard Schmidt <berni birkenwald de>, Jim Jagielski] + +Changes with Apache 2.4.35 + + *) http: Enforce consistently no response body with both 204 and 304 + statuses. [Yann Ylavic] + + *) mod_status: Cumulate CPU time of exited child processes in the + "cu" and "cs" values. Add CPU time of the parent process to the + "c" and "s" values. + [Rainer Jung] + + *) mod_proxy: Improve the balancer member data shown in mod_status when + "ProxyStatus" is "On": add "busy" count and show byte counts in + auto mode always in units of kilobytes. [Rainer Jung] + + *) mod_status: Add cumulated response duration time in milliseconds. + [Rainer Jung] + + *) mod_status: Complete the data shown for async MPMs in "auto" mode. + Added number of processes, number of stopping processes and number + of busy and idle workers. [Rainer Jung] + + *) mod_ratelimit: Don't interfere with "chunked" encoding, fixing regression + introduced in 2.4.34. PR 62568. [Yann Ylavic] + + *) mod_proxy: Remove load order and link dependency between mod_lbmethod_* + modules and mod_proxy. PR 62557. [Ruediger Pluem, William Rowe] + + *) Allow the argument to <IfFile>, <IfDefine>, <IfSection>, <IfDirective>, + and <IfModule> to be quoted. This is primarily for the benefit of + <IfFile>. [Eric Covener] + + *) mod_watchdog: Correct some log messages. [Rainer Jung] + + *) mod_md: When the last domain name from an MD is moved to another one, + that now empty MD gets moved to the store archive. PR 62572. + [Stefan Eissing] + + *) mod_ssl: Fix merging of SSLOCSPOverrideResponder. [Jeff Trawick, + [Frank Meier <frank meier ergon.ch>] + + *) mod_proxy_balancer: Restore compatibility with APR 1.4. [Joe Orton] + +Changes with Apache 2.4.34 + + *) SECURITY: CVE-2018-8011 (cve.mitre.org) + mod_md: DoS via Coredumps on specially crafted requests + + *) SECURITY: CVE-2018-1333 (cve.mitre.org) + mod_http2: DoS for HTTP/2 connections by specially crafted requests + + *) Introduce zh-cn and zh-tw (simplified and traditional Chinese) error + document translations. [CodeingBoy, popcorner] + + *) event: avoid possible race conditions with modules on the child pool. + [Stefan Fritsch] + + *) mod_proxy: Fix a corner case where the ProxyPassReverseCookieDomain or + ProxyPassReverseCookiePath directive could fail to update correctly + 'domain=' or 'path=' in the 'Set-Cookie' header. PR 61560. + [Christophe Jaillet] + + *) mod_ratelimit: fix behavior when proxing content. PR 62362. + [Luca Toscano, Yann Ylavic] + + *) core: Re-allow '_' (underscore) in hostnames. + [Eric Covener] + + *) mod_authz_core: If several parameters are used in a AuthzProviderAlias + directive, if these parameters are not enclosed in quotation mark, only + the first one is handled. The other ones are silently ignored. + Add a message to warn about such a spurious configuration. + PR 62469 [Hank Ibell <hwibell gmail.com>, Christophe Jaillet] + + *) mod_md: improvements and bugfixes + - MDNotifyCmd now takes additional parameter that are passed on to the called command. + - ACME challenges have better checks for interference with other modules + - ACME challenges are only handled for domains managed by the module, allowing + other ACME clients to operate for other domains in the server. + - better libressl integration + + *) mod_proxy_wstunnel: Add default schema ports for 'ws' and 'wss'. + PR 62480. [Lubos Uhliarik <luhliari redhat.com>} + + *) logging: Some early logging-related startup messages could be lost + when using syslog for the global ErrorLog. [Eric Covener] + + *) mod_cache: Handle case of an invalid Expires header value RFC compliant + like the case of an Expires time in the past: allow to overwrite the + non-caching decision using CacheStoreExpired and respect Cache-Control + "max-age" and "s-maxage". [Rainer Jung] + + *) mod_xml2enc: Fix forwarding of error metadata/responses. PR 62180. + [Micha Lenk <micha lenk.info>, Yann Ylavic] + + *) mod_proxy_http: Fix response header thrown away after the previous one + was considered too large and truncated. PR 62196. [Yann Ylavic] + + *) core: Add and handle AP_GETLINE_NOSPC_EOL flag for ap_getline() family + of functions to consume the end of line when the buffer is exhausted. + PR 62198. [Yann Ylavic] + + *) mod_proxy_http: Add new worker parameter 'responsefieldsize' to + allow maximum HTTP response header size to be increased past 8192 + bytes. PR 62199. [Hank Ibell <hwibell gmail.com>] + + *) mod_ssl: Extend SSLOCSPEnable with mode 'leaf' that only checks the leaf + of a certificate chain. PR62112. + [Ricardo Martin Camarero <rickyepoderi yahoo.es>] + + *) http: Fix small memory leak per request when handling persistent + connections. [Ruediger Pluem, Joe Orton] + + *) mod_proxy_html: Fix variable interpolation and memory allocation failure + in ProxyHTMLURLMap. PR 62344. [Ewald Dieterich <ewald mailbox.org>] + + *) mod_remoteip: Fix RemoteIP{Trusted,Internal}ProxyList loading broken by 2.4.30. + PR 62220. [Chritophe Jaillet, Yann Ylavic] + + *) mod_remoteip: When overriding the useragent address from X-Forwarded-For, + zero out what had been initialized as the connection-level port. PR59931. + [Hank Ibell <hwibell gmail.com>] + + *) core: In ONE_PROCESS/debug mode, cleanup everything when exiting. + [Yann Ylavic] + + *) mod_proxy_balancer: Add hot spare member type and corresponding flag (R). + Hot spare members are used as drop-in replacements for unusable workers + in the same load balancer set. This differs from hot standbys which are + only used when all workers in a set are unusable. PR 61140. [Jim Riggs] + + *) suexec: Add --enable-suexec-capabilites support on Linux, to use + setuid/setgid capability bits rather than a setuid root binary. + [Joe Orton] + + *) suexec: Add support for logging to syslog as an alternative to + logging to a file; use --without-suexec-logfile --with-suexec-syslog. + [Joe Orton] + + *) mod_ssl: Restore 2.4.29 behaviour in SSL vhost merging/enabling + which broke some rare but previously-working configs. [Joe Orton] + + *) core, log: improve sanity checks for the ErrorLog's syslog config, and + explicitly allow only lowercase 'syslog' settings. PR 62102 + [Luca Toscano, Jim Riggs, Christophe Jaillet] + + *) mod_http2: accurate reporting of h2 data input/output per request via + mod_logio. Fixes an issue where output sizes where counted n-times on + reused slave connections. [Stefan Eissing] + See github issue: https://github.com/icing/mod_h2/issues/158 + + *) mod_http2: Fix unnecessary timeout waits in case streams are aborted. + [Stefan Eissing] + + *) mod_http2: restoring the v1.10.16 keepalive timeout behaviour of mod_http2. + [Stefan Eissing] + + *) mod_proxy: Do not restrict the maximum pool size for backend connections + any longer by the maximum number of threads per process and use a better + default if mod_http2 is loaded. + [Yann Ylavic, Ruediger Pluem, Stefan Eissing, Gregg Smith] + + *) mod_slotmem_shm: Add generation number to shm filename to fix races + with graceful restarts. PRs 62044 and 62308. [Jim Jagielski, Yann Ylavic] + + *) core: Preserve the original HTTP request method in the '%<m' LogFormat + when an path-based ErrorDocument is used. PR 62186. + [Micha Lenk <micha lenk.info>] + + *) mod_remoteip: make proxy-protocol work on slave connections, e.g. in + HTTP/2 requests. [Stefan Eissing] + See also https://github.com/roadrunner2/mod-proxy-protocol/issues/6 + + *) mod_ssl: Fix merging of proxy SSL context outside <Proxy> sections, + regression introduced in 2.4.30. PR 62232. [Rainer Jung, Yann Ylavic] + + *) mod_md: Fix compilation with OpenSSL before version 1.0.2. [Rainer Jung] + + *) mod_dumpio: do nothing below log level TRACE7. [Yann Ylavic] + + *) mod_remoteip: Restore compatibility with APR 1.4 (apr_sockaddr_is_wildcard). + [Eric Covener] + + *) core: On ECBDIC platforms, some errors related to oversized headers + may be misreported or be logged as ASCII escapes. PR 62200 + [Hank Ibell <hwibell gmail.com>] + + *) mod_ssl: Fix cmake-based build. PR 62266. [Rainer Jung] + + *) core: Add <IfFile>, <IfDirective> and <IfSection> conditional + section containers. [Eric Covener, Joe Orton] + + *) rotatelogs: Add -D option to create parent directories. PR 46669. + [Philippe Lantin <plantin cobaltgroup.com>, Ben Reser, Rainer Jung] + +Changes with Apache 2.4.33 + + *) core: Fix request timeout logging and possible crash for error_log hooks. + [Yann Ylavic] + + *) mod_slomem_shm: Fix failure to create balancers's slotmems in Windows MPM, + where children processes need to attach them instead since they are owned + by the parent process already. [Yann Ylavic] + + *) ab: try all destination socket addresses returned by + apr_sockaddr_info_get instead of failing on first one when not available. + Needed for instance if localhost resolves to both ::1 and 127.0.0.1 + e.g. if both are in /etc/hosts. [Jan Kaluza] + + *) ab: Use only one connection to determine working destination socket + address. [Jan Kaluza] + + *) ab: LibreSSL doesn't have or require Windows applink.c. [Gregg L. Smith] + + *) htpasswd/htdigest: Disable support for bcrypt on EBCDIC platforms. + apr-util's bcrypt implementation doesn't tolerate EBCDIC. [Eric Covener] + + *) htpasswd/htdbm: report the right limit when get_password() overflows. + [Yann Ylavic] + + *) htpasswd: Don't fail in -v mode if password file is unwritable. + PR 61631. [Joe Orton] + + *) htpasswd: don't point to (unused) stack memory on output + to make static analysers happy. PR 60634. + [Yann Ylavic, reported by shqking and Zhenwei Zou] + +Changes with Apache 2.4.32 + + *) mod_access_compat: Fail if a comment is found in an Allow or Deny + directive. [Jan Kaluza] + + *) mod_authz_host: Ignore comments after "Require host", logging a + warning, or logging an error if the line is otherwise empty. + [Jan Kaluza, Joe Orton] + + *) rotatelogs: Fix expansion of %Z in localtime (-l) mode, and fix + Y2K38 bug. [Joe Orton] + + *) mod_ssl: Support SSL DN raw variable extraction without conversion + to UTF-8, using _RAW suffix on variable names. [Joe Orton] + + *) ab: Fix https:// connection failures (regression in 2.4.30); fix + crash generating CSV output for large -n. [Joe Orton, Jan Kaluza] + +Changes with Apache 2.4.31 (not released) + + *) mod_proxy_fcgi: Add the support for mod_proxy's flushpackets and flushwait + parameters. [Luca Toscano, Ruediger Pluem, Yann Ylavic] + + *) mod_ldap: Avoid possible crashes, hangs, and busy loops due to + improper merging of the cache lock in vhost config. + PR 43164 [Eric Covener] + + *) mpm_event: Do lingering close in worker(s). [Yann Ylavic] + + *) mpm_queue: Put fdqueue code in common for MPMs event and worker. + [Yann Ylavic] + +Changes with Apache 2.4.30 (not released) + + *) SECURITY: CVE-2017-15710 (cve.mitre.org) + Out of bound write in mod_authnz_ldap with AuthLDAPCharsetConfig enabled + [Eric Covener, Luca Toscano, Yann Ylavic] + + *) SECURITY: CVE-2018-1283 (cve.mitre.org) + mod_session: CGI-like applications that intend to read from mod_session's + 'SessionEnv ON' could be fooled into reading user-supplied data instead. + [Yann Ylavic] + + *) SECURITY: CVE-2018-1303 (cve.mitre.org) + mod_cache_socache: Fix request headers parsing to avoid a possible crash + with specially crafted input data. [Ruediger Pluem] + + *) SECURITY: CVE-2018-1301 (cve.mitre.org) + core: Possible crash with excessively long HTTP request headers. + Impractical to exploit with a production build and production LogLevel. + [Yann Ylavic] + + *) SECURITY: CVE-2017-15715 (cve.mitre.org) + core: Configure the regular expression engine to match '$' to the end of + the input string only, excluding matching the end of any embedded + newline characters. Behavior can be changed with new directive + 'RegexDefaultOptions'. [Yann Ylavic] + + *) SECURITY: CVE-2018-1312 (cve.mitre.org) + mod_auth_digest: Fix generation of nonce values to prevent replay + attacks across servers using a common Digest domain. This change + may cause problems if used with round robin load balancers. PR 54637 + [Stefan Fritsch] + + *) SECURITY: CVE-2018-1302 (cve.mitre.org) + mod_http2: Potential crash w/ mod_http2. + [Stefan Eissing] + + *) mod_proxy: Provide an RFC1035 compliant version of the hostname in the + proxy_worker_shared structure. PR62085 [Graham Leggett] + + *) mod_proxy: Worker schemes and hostnames which are too large are no + longer fatal errors; it is logged and the truncated values are stored. + [Jim Jagielski] + + *) mod_proxy: Allow setting options to globally defined balancer from + ProxyPass used in VirtualHost. Balancers are now merged using the new + merge_balancers method which merges the balancers options. [Jan Kaluza] + + *) logresolve: Fix incorrect behavior or segfault if -c flag is used + Fixes: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=823259 + [Stefan Fritsch] + + *) mod_remoteip: Add support for PROXY protocol (code donated by Cloudzilla). + Add ability for PROXY protocol processing to be optional to donated code. + See also: http://www.haproxy.org/download/1.5/doc/proxy-protocol.txt + [Cloudzilla/roadrunner2@GitHub, Jim Jagielski, Daniel Ruggeri] + + *) mod_proxy, mod_ssl: Handle SSLProxy* directives in <Proxy> sections, + allowing per backend TLS configuration. [Yann Ylavic] + + *) mod_proxy_uwsgi: Add in UWSGI proxy (sub)module. [Roberto De Ioris, + Jim Jagielski] + + *) mod_proxy_balancer,mod_slotmem_shm: Rework SHM reuse/deletion to not + depend on the number of restarts (non-Unix systems) and preserve shared + names as much as possible on configuration changes for SHMs and persisted + files. PR 62044. [Yann Ylavic, Jim Jagielski] + + *) mod_http2: obsolete code removed, no more events on beam pool destruction, + discourage content encoders on http2-status response (where they do not work). + [Stefan Eissing] + + *) mpm_event: Let the listener thread do its maintenance job on resources + shortage. PR 61979. [Yann Ylavic] + + *) mpm_event: Wakeup the listener to re-enable listening sockets. + [Yann Ylavic] + + *) mod_ssl: The SSLCompression directive will now give an error if used + with an OpenSSL build which does not support any compression methods. + [Joe Orton] + + *) mpm_event,worker: Mask signals for threads created by modules in child + init, so that they don't receive (implicitly) the ones meant for the MPM. + PR 62009. [Armin Abfalterer <a.abfalterer gmail com>, Yann Ylavic] + + *) mod_md: new experimental, module for managing domains across virtual hosts, + implementing the Let's Encrypt ACMEv1 protocol to signup and renew + certificates. Please read the modules documentation for further instructions + on how to use it. [Stefan Eissing] + + *) mod_proxy_html: skip documents shorter than 4 bytes + PR 56286 [Micha Lenk <micha lenk info>] + + *) core, mpm_event: Avoid a small memory leak of the scoreboard handle, for + the lifetime of the connection, each time it is processed by MPM event. + [Yann Ylavic] + + *) mpm_event: Update scoreboard status for KeepAlive state. [Yann Ylavic] + + *) mod_ldap: Fix a case where a full LDAP cache would continually fail to + purge old entries and log AH01323. PR61891. + [Hendrik Harms <hendrik.harms gmail.com>] + + *) mpm_event: close connections not reported as handled by any module to + avoid losing track of them and leaking scoreboard entries. PR 61551. + [Yann Ylavic] + + *) core: A signal received while stopping could have crashed the main + process. PR 61558. [Yann Ylavic] + + *) mod_ssl: support for mod_md added. [Stefan Eissing] + + *) mod_proxy_html: process parsed comments immediately. + Fixes bug (seen in the wild when used with IBM's HTTPD bundle) + where parsed comments may be lost. [Nick Kew] + + *) mod_proxy_html: introduce doctype for HTML 5 [Nick Kew] + + *) mod_proxy_html: fix typo-bug processing "strict" vs "transitional" + HTML/XHTML. PR 56457 [Nick Kew] + + *) mpm_event: avoid a very unlikely race condition between the listener and + the workers when the latter fails to add a connection to the pollset. + [Yann Ylavic] + + *) core: silently ignore a not existent file path when IncludeOptional + is used. PR 57585. [Alberto Murillo Silva <powerbsd yahoo.com>, Luca Toscano] + + *) mod_macro: fix usability of globally defined macros in .htaccess files. + PR 57525. [Jose Kahan <jose w3.org>, Yann Ylavic] + + *) mod_rewrite, core: add the Vary header when a condition evaluates to true + and the related RewriteRule is used in a Directory context + (triggering an internal redirect). [Luca Toscano] + + *) ab: Make the TLS layer aware that the underlying socket is nonblocking, + and use/handle POLLOUT where needed to avoid busy IOs and recover write + errors when appropriate. [Yann Ylavic] + + *) ab: Keep reading nonblocking to exhaust TCP or SSL buffers when previous + read was incomplete (the SSL case can cause the next poll() to timeout + since data are buffered already). PR 61301 [Luca Toscano, Yann Ylavic] + + *) mod_http2: avoid unnecessary data retrieval for a trace log. Allow certain + information retrievals on null bucket beams where it makes sense. [Stefan Eissing] + +Changes with Apache 2.4.29 + + *) mod_unique_id: Use output of the PRNG rather than IP address and + pid, avoiding sleep() call and possible DNS issues at startup, + plus improving randomness for IPv6-only hosts. [Jan Kaluza] + + *) mod_rewrite, core: Avoid the 'Vary: Host' response header when HTTP_HOST + is used in a condition that evaluates to true. PR 58231 [Luca Toscano, Yann Ylavic] + + *) mod_http2: v0.10.12, removed optimization for mutex handling in bucket + beams that could lead to assertion failure in edge cases. + [Stefan Eissing] + + *) mod_proxy: Fix regression for non decimal loadfactor parameter introduced + in 2.4.28. [Jim Jagielski] + + *) mod_authz_dbd: fix a segmentation fault if AuthzDBDQuery is not set. + PR 61546. [Lubos Uhliarik <luhliari redhat.com>] + + *) mod_rewrite: Add support for starting External Rewriting Programs + as non-root user on UNIX systems by specifying username and group + name as third argument of RewriteMap directive. [Jan Kaluza] + + *) core: Rewrite the Content-Length filter to avoid excessive memory + consumption. Chunked responses will be generated in more cases + than in previous releases. PR 61222. [Joe Orton, Ruediger Pluem] + + *) mod_ssl: Fix SessionTicket callback return value, which does seem to + matter with OpenSSL 1.1. [Yann Ylavic] + +Changes with Apache 2.4.28 + + *) SECURITY: CVE-2017-9798 (cve.mitre.org) + Corrupted or freed memory access. <Limit[Except]> must now be used in the + main configuration file (httpd.conf) to register HTTP methods before the + .htaccess files. [Yann Ylavic] + + *) event: Avoid possible blocking in the listener thread when shutting down + connections. PR 60956. [Yann Ylavic] + + *) mod_speling: Don't embed referer data in a link in error page. + PR 38923 [Nick Kew] + + *) htdigest: prevent a buffer overflow when a string exceeds the allowed max + length in a password file. PR 61511. + [Luca Toscano, Hanno Böck <hanno hboeck de>] + + *) mod_proxy: loadfactor parameter can now be a decimal number (eg: 1.25). + [Jim Jagielski] + + *) mod_proxy_wstunnel: Allow upgrade to any protocol dynamically. + PR 61142. + + *) mod_watchdog/mod_proxy_hcheck: Time intervals can now be specified + down to the millisecond. Supports 'mi' (minute), 'ms' (millisecond), + 's' (second) and 'hr' (hour!) time suffixes. [Jim Jagielski] + + *) mod_http2: Fix for stalling when more than 32KB are written to a + suspended stream. [Stefan Eissing] + + *) build: allow configuration without APR sources. [Jacob Champion] + + *) mod_ssl, ab: Fix compatibility with LibreSSL. PR 61184. + [Bernard Spil <brnrd freebsd.org>, Michael Schlenker <msc contact.de>, + Yann Ylavic] + + *) core/log: Support use of optional "tag" in syslog entries. + PR 60525. [Ben Rubson <ben.rubson gmail.com>, Jim Jagielski] + + *) mod_proxy: Fix ProxyAddHeaders merging. [Joe Orton] + + *) core: Disallow multiple Listen on the same IP:port when listener buckets + are configured (ListenCoresBucketsRatio > 0), consistently with the single + bucket case (default), thus avoiding the leak of the corresponding socket + descriptors on graceful restart. [Yann Ylavic] + + *) event: Avoid listener periodic wake ups by using the pollset wake-ability + when available. PR 57399. [Yann Ylavic, Luca Toscano] + + *) mod_proxy_wstunnel: Fix detection of unresponded request which could have + led to spurious HTTP 502 error messages sent on upgrade connections. + PR 61283. [Yann Ylavic] + +Changes with Apache 2.4.27 + + *) SECURITY: CVE-2017-9789 (cve.mitre.org) + mod_http2: Read after free. When under stress, closing many connections, + the HTTP/2 handling code would sometimes access memory after it has been + freed, resulting in potentially erratic behaviour. + [Stefan Eissing] + + *) SECURITY: CVE-2017-9788 (cve.mitre.org) + mod_auth_digest: Uninitialized memory reflection. The value placeholder + in [Proxy-]Authorization headers type 'Digest' was not initialized or + reset before or between successive key=value assignments. + [William Rowe] + + *) COMPATIBILITY: mod_lua: Remove the undocumented exported 'apr_table' + global variable when using Lua 5.2 or later. This was exported as a + side effect from luaL_register, which is no longer supported as of + Lua 5.2 which deprecates pollution of the global namespace. + [Rainer Jung] + + *) COMPATIBILITY: mod_http2: Disable and give warning when using Prefork. + The server will continue to run, but HTTP/2 will no longer be negotiated. + [Stefan Eissing] + + *) COMPATIBILITY: mod_proxy_fcgi: Revert to 2.4.20 FCGI behavior for the + default ProxyFCGIBackendType, fixing a regression with PHP-FPM. PR 61202. + [Jacob Champion, Jim Jagielski] + + *) mod_lua: Improve compatibility with Lua 5.1, 5.2 and 5.3. + PR58188, PR60831, PR61245. [Rainer Jung] + + *) mod_http2: Simplify ready queue, less memory and better performance. Update + mod_http2 version to 1.10.7. [Stefan Eissing] + + *) Allow single-char field names inadvertently disallowed in 2.4.25. + PR 61220. [Yann Ylavic] + + *) htpasswd / htdigest: Do not apply the strict permissions of the temporary + passwd file to a possibly existing passwd file. PR 61240. [Ruediger Pluem] + + *) core: Avoid duplicate HEAD in Allow header. + This is a regression in 2.4.24 (unreleased), 2.4.25 and 2.4.26. + PR 61207. [Christophe Jaillet] + +Changes with Apache 2.4.26 + + *) SECURITY: CVE-2017-7679 (cve.mitre.org) + mod_mime can read one byte past the end of a buffer when sending a + malicious Content-Type response header. [Yann Ylavic] + + *) SECURITY: CVE-2017-7668 (cve.mitre.org) + The HTTP strict parsing changes added in 2.2.32 and 2.4.24 introduced a + bug in token list parsing, which allows ap_find_token() to search past + the end of its input string. By maliciously crafting a sequence of + request headers, an attacker may be able to cause a segmentation fault, + or to force ap_find_token() to return an incorrect value. + [Jacob Champion] + + *) SECURITY: CVE-2017-7659 (cve.mitre.org) + A maliciously constructed HTTP/2 request could cause mod_http2 to + dereference a NULL pointer and crash the server process. + + *) SECURITY: CVE-2017-3169 (cve.mitre.org) + mod_ssl may dereference a NULL pointer when third-party modules call + ap_hook_process_connection() during an HTTP request to an HTTPS port. + [Yann Ylavic] + + *) SECURITY: CVE-2017-3167 (cve.mitre.org) + Use of the ap_get_basic_auth_pw() by third-party modules outside of the + authentication phase may lead to authentication requirements being + bypassed. + [Emmanuel Dreyfus <manu netbsd.org>, Jacob Champion, Eric Covener] + + *) HTTP/2 support no longer tagged as "experimental" but is instead considered + fully production ready. + + *) mod_http2: Fix for possible CPU busy loop introduced in v1.10.3 where a stream may keep + the session in continuous check for state changes that never happen. + [Stefan Eissing] + + *) mod_proxy_wstunnel: Add "upgrade" parameter to allow upgrade to other + protocols. [Jean-Frederic Clere] + + *) MPMs unix: Place signals handlers and helpers out of DSOs to avoid + a possible crash if a signal is caught during (graceful) restart. + PR 60487. [Yann Ylavic] + + *) mod_rewrite: When a substitution is a fully qualified URL, and the + scheme/host/port matches the current virtual host, stop interpreting the + path component as a local path just because the first component of the + path exists in the filesystem. Adds RewriteOption "LegacyPrefixDocRoot" + to revert to previous behavior. PR60009. + [Hank Ibell <hwibell gmail.com>] + + *) core: ap_parse_form_data() URL-decoding doesn't work on EBCDIC + platforms. PR61124. [Hank Ibell <hwibell gmail.com>] + + *) ab: enable option processing for setting a custom HTTP method also for + non-SSL builds. [Rainer Jung] + + *) core: EBCDIC fixes for interim responses with additional headers. + [Eric Covener] + + *) mod_env: when processing a 'SetEnv' directive, warn if the environment + variable name includes a '='. It is likely a configuration error. + PR 60249 [Christophe Jaillet] + + *) Evaluate nested If/ElseIf/Else configuration blocks. + [Luca Toscano, Jacob Champion] + + *) mod_rewrite: Add 'BNP' (backreferences-no-plus) flag to RewriteRule to + allow spaces in backreferences to be encoded as %20 instead of '+'. + [Eric Covener] + + *) mod_rewrite: Add the possibility to limit the escaping to specific + characters in backreferences by listing them in the B flag. + [Eric Covener] + + *) mod_substitute: Fix spurious AH01328 (Line too long) errors on EBCDIC + systems. [Eric Covener] + + *) mod_http2: fail requests without ERROR log in case we need to read interim + responses and see only garbage. This can happen if proxied servers send + data where none should be, e.g. a body for a HEAD request. [Stefan Eissing] + + *) mod_proxy_http2: adding support for Reverse Proxy Request headers. + [Stefan Eissing] + + *) mod_http2: fixed possible deadlock that could occur when connections were + terminated early with ongoing streams. Fixed possible hanger with timeout + on race when connection considers itself idle. [Stefan Eissing] + + *) mod_http2: MaxKeepAliveRequests now limits the number of times a + slave connection gets reused. [Stefan Eissing] + + *) mod_brotli: Add a new module for dynamic Brotli (RFC 7932) compression. + [Evgeny Kotkov] + + *) mod_proxy_http2: Fixed bug in re-attempting proxy requests after + connection error. Reliability of reconnect handling improved. + [Stefan Eissing] + + *) mod_http2: better performance, eliminated need for nested locks and + thread privates. Moving request setups from the main connection to the + worker threads. Increase number of spare connections kept. + [Stefan Eissing] + + *) mod_http2: input buffering and dynamic flow windows for increased + throughput. Requires nghttp2 >= v1.5.0 features. Announced at startup + in mod_http2 INFO log as feature 'DWINS'. [Stefan Eissing] + + *) mod_http2: h2 workers with improved scalability for better scheduling + performance. There are H2MaxWorkers threads created at start and the + number is kept constant for now. [Stefan Eissing] + + *) mod_http2: obsoleted option H2SessionExtraFiles, will be ignored and + just log a warning. [Stefan Eissing] + + *) mod_autoindex: Add IndexOptions UseOldDateFormat to allow the date + format from 2.2 in the Last Modified column. PR60846. + [Hank Ibell <hwibell gmail.com>] + + *) core: Add %{REMOTE_PORT} to the expression parser. PR59938 + [Hank Ibell <hwibell gmail.com>] + + *) mod_cache: Fix a regression in 2.4.25 for the forward proxy case by + computing and using the same entity key according to when the cache + checks, loads and saves the request. + PR 60577. [Yann Ylavic] + + *) mod_proxy_hcheck: Don't validate timed out responses. [Yann Ylavic] + + *) mod_proxy_hcheck: Ensure thread-safety when concurrent healthchecks are + in use (ProxyHCTPsize > 0). PR 60071. [Yann Ylavic, Jim Jagielski] + + *) core: %{DOCUMENT_URI} used in nested SSI expressions should point to the + URI originally requested by the user, not the nested documents URI. This + restores the behavior of this variable to match the "legacy" SSI parser. + PR60624. [Hank Ibell <hwibell gmail.com>] + + *) mod_proxy_fcgi: Add ProxyFCGISetEnvIf to fixup CGI environment + variables just before invoking the FastCGI. [Eric Covener, + Jacob Champion] + + *) mod_proxy_fcgi: Return to 2.4.20-and-earlier behavior of leaving + a "proxy:fcgi://" prefix in the SCRIPT_FILENAME environment variable by + default. Add ProxyFCGIBackendType to allow the type of backend to be + specified so these kinds of fixups can be restored without impacting + FPM. PR60576 [Eric Covener, Jim Jagielski] + + *) mod_ssl: work around leaks on (graceful) restart. [Yann Ylavic] + + *) mod_ssl: Add support for OpenSSL 1.1.0. [Rainer Jung] + + *) Don't set SO_REUSEPORT unless ListenCoresBucketsRatio is greater + than zero. [Eric Covener] + + *) mod_http2: moving session cleanup to pre_close hook to avoid races with + modules already shut down and slave connections still operating. + [Stefan Eissing] + + *) mod_lua: Support for Lua 5.3 + + *) mod_proxy_http2: support for ProxyPreserverHost directive. [Stefan Eissing] + + *) mod_http2: fix for crash when running out of memory. + [Robert Swiecki <robert swiecki.net>, Stefan Eissing] + + *) mod_proxy_fcgi: Return HTTP 504 rather than 503 in case of proxy timeout. + [Luca Toscano] + + *) mod_http2: not counting file buckets again stream max buffer limits. + Effectively transferring static files in one step from slave to master + connection. [Stefan Eissing] + + *) mod_http2: comforting ap_check_pipeline() on slave connections + to facilitate reuse (see https://github.com/icing/mod_h2/issues/128). + [Stefan Eissing, reported by Armin Abfalterer] + + *) mod_http2: http/2 streams now with state handling/transitions as defined + in RFC7540. Stream cleanup/connection shutdown reworked to become easier + to understand/maintain/debug. Added many asserts on state and cleanup + transitions. [Stefan Eissing] + + *) mod_auth_digest: Use an anonymous shared memory segment by default, + preventing startup failure after unclean shutdown. PR 54622. + [Jan Kaluza] + + *) mod_filter: Fix AddOutputFilterByType with non-content-level filters. + PR 58856. [Micha Lenk <micha lenk.info>] + + *) mod_watchdog: Fix semaphore leak over restarts. [Jim Jagielski] + + *) mod_http2: regression fix on PR 59348, on graceful restart, ongoing + streams are finished normally before the final GOAWAY is sent. + [Stefan Eissing, <slavko gmail.com>] + + *) mod_proxy: Allow the per-request environment variable "no-proxy" to + be used as an alternative to ProxyPass /path !. This is primarily + to set exceptions for ProxyPass specified in <Location> context. + Use SetEnvIf, not SetEnv. PR 60458. [Eric Covener] + + *) mod_http2: fixes PR60599, sending proper response for conditional requests + answered by mod_cache. [Jeff Wheelhouse, Stefan Eissing] + + *) mod_http2: rework of stream resource cleanup to avoid a crash in a close + of a lingering connection. Prohibit special file bucket beaming for + shared buckets. Files sent in stream output now use the stream pool + as read buffer, reducing memory footprint of connections. + [Yann Ylavic, Stefan Eissing] + + *) mod_proxy_fcgi, mod_fcgid: Fix crashes in ap_fcgi_encoded_env_len() when + modules add empty environment variables to the request. PR 60275. + [<alex2grad AT gmail.com>] + + *) mod_http2: fix for possible page fault when stream is resumed during + session shutdown. [sidney-j-r-m (github)] + + *) mod_http2: fix for h2 session ignoring new responses while already + open streams continue to have data available. [Stefan Eissing] + + *) mod_http2: adding support for MergeTrailers directive. [Stefan Eissing] + + *) mod_http2: limiting DATA frame sizes by TLS record sizes in use on the + connection. Flushing outgoing frames earlier. [Stefan Eissing] + + *) mod_http2: cleanup beamer registry on server reload. PR 60510. + [Pavel Mateja <pavel verotel.cz>, Stefan Eissing] + + *) mod_proxy_{ajp,fcgi}: Fix a possible crash when reusing an established + backend connection, happening with LogLevel trace2 or higher configured, + or at any log level with compilers not detected as C99 compliant (e.g. + MSVC on Windows). [Yann Ylavic] + + *) mod_ext_filter: Don't interfere with "error buckets" issued by other + modules. PR 60375. [Eric Covener, Lubos Uhliarik] + + *) mod_http2: fixes https://github.com/icing/mod_h2/issues/126 e.g. beam + bucket lifetime handling when data is sent over temporary pools. + [Stefan Eissing] + +Changes with Apache 2.4.25 + + *) Fix some build issues related to various modules. + [Rainer Jung] + +Changes with Apache 2.4.24 (not released) + + *) SECURITY: CVE-2016-8740 (cve.mitre.org) + mod_http2: Mitigate DoS memory exhaustion via endless + CONTINUATION frames. + [Naveen Tiwari <naveen.tiwari@asu.edu> and CDF/SEFCOM at Arizona State + University, Stefan Eissing] + + *) SECURITY: CVE-2016-2161 (cve.mitre.org) + mod_auth_digest: Prevent segfaults during client entry allocation when + the shared memory space is exhausted. + [Maksim Malyutin <m.malyutin dsec.ru>, Eric Covener, Jacob Champion] + + *) SECURITY: CVE-2016-0736 (cve.mitre.org) + mod_session_crypto: Authenticate the session data/cookie with a + MAC (SipHash) to prevent deciphering or tampering with a padding + oracle attack. [Yann Ylavic, Colm MacCarthaigh] + + *) SECURITY: CVE-2016-8743 (cve.mitre.org) + Enforce HTTP request grammar corresponding to RFC7230 for request lines + and request headers, to prevent response splitting and cache pollution by + malicious clients or downstream proxies. [William Rowe, Stefan Fritsch] + + *) Validate HTTP response header grammar defined by RFC7230, resulting + in a 500 error in the event that invalid response header contents are + detected when serving the response, to avoid response splitting and cache + pollution by malicious clients, upstream servers or faulty modules. + [Stefan Fritsch, Eric Covener, Yann Ylavic] + + *) core: Mitigate [f]cgi CVE-2016-5387 "httpoxy" issues. + [Dominic Scheirlinck <dominic vendhq.com>, Yann Ylavic] + + *) mod_rewrite: Limit runaway memory use by short circuiting some kinds of + looping RewriteRules when the local path significantly exceeds + LimitRequestLine. PR 60478. [Jeff Wheelhouse <apache wheelhouse.org>] + + *) mod_ratelimit: Allow for initial "burst" amount at full speed before + throttling: PR 60145 [Andy Valencia <ajv-etradanalhos vsta.org>, + Jim Jagielski] + + *) mod_socache_memcache: Provide memcache stats to mod_status. + [Jim Jagielski] + + *) mod_file_cache: mod_file_cache should be able to serve files that + haven't had a Content-Type set via e.g. mod_mime. [Eric Covener] + + *) http_filters: Fix potential looping in new check_headers() due to new + pattern of ap_die() from http header filter. Explicitly clear the + previous headers and body. + + *) core: Drop Content-Length header and message-body from HTTP 204 responses. + PR 51350 [Luca Toscano] + + *) mod_proxy: Honor a server scoped ProxyPass exception when ProxyPass is + configured in <Location>, like in 2.2. PR 60458. + [Eric Covener] + + *) mod_lua: Fix default value of LuaInherit directive. It should be + 'parent-first' instead of 'none', as per documentation. PR 60419 + [Christophe Jaillet] + + *) core: New directive HttpProtocolOptions to control httpd enforcement + of various RFC7230 requirements. [Stefan Fritsch, William Rowe] + + *) core: Permit unencoded ';' characters to appear in proxy requests and + Location: response headers. Corresponds to modern browser behavior. + [William Rowe] + + *) core: ap_rgetline_core now pulls from r->proto_input_filters. + + *) core: Correctly parse an IPv6 literal host specification in an absolute + URL in the request line. [Stefan Fritsch] + + *) core: New directive RegisterHttpMethod for registering non-standard + HTTP methods. [Stefan Fritsch] + + *) mod_socache_memcache: Pass expiration time through to memcached. PR 55445. + [Faidon Liambotis <paravoid debian.org>, Joe Orton] + + *) mod_cache: Use the actual URI path and query-string for identifying the + cached entity (key), such that rewrites are taken into account when + running afterwards (CacheQuickHandler off). PR 21935. [Yann Ylavic] + + *) mod_http2: new directive 'H2EarlyHints' to enable sending of HTTP status + 103 interim responses. Disabled by default. [Stefan Eissing] + + *) mod_ssl: Fix quick renegotiation (OptRenegotiaton) with no intermediate + in the client certificate chain. PR 55786. [Yann Ylavic] + + *) event: Allow to use the whole allocated scoreboard (up to ServerLimit + slots) to avoid scoreboard full errors when some processes are finishing + gracefully. Also, make gracefully finishing processes close all + keep-alive connections. PR 53555. [Stefan Fritsch] + + *) mpm_event: Don't take over scoreboard slots from gracefully finishing + threads. [Stefan Fritsch] + + *) mpm_event: Free memory earlier when shutting down processes. + [Stefan Fritsch] + + *) mod_status: Display the process slot number in the async connection + overview. [Stefan Fritsch] + + *) mod_dir: Responses that go through "FallbackResource" might appear to + hang due to unterminated chunked encoding. PR58292. [Eric Covener] + + *) mod_dav: Fix a potential cause of unbounded memory usage or incorrect + behavior in a routine that sends <DAV:response>'s to the output filters. + [Evgeny Kotkov] + + *) mod_http2: new directive 'H2PushResource' to enable early pushes before + processing of the main request starts. Resources are announced to the + client in Link headers on a 103 early hint response. + All responses with status code <400 are inspected for Link header and + trigger pushes accordingly. 304 still does prevent pushes. + 'H2PushResource' can mark resources as 'critical' which gives them higher + priority than the main resource. This leads to preferred scheduling for + processing and, when content is available, will send it first. 'critical' + is also recognized on Link headers. [Stefan Eissing] + + *) mod_proxy_http2: uris in Link headers are now mapped back to a suitable + local url when available. Relative uris with an absolute path are mapped + as well. This makes reverse proxy mapping available for resources + announced in this header. + With 103 interim responses being forwarded to the main client connection, + this effectively allows early pushing of resources by a reverse proxied + backend server. [Stefan Eissing] + + *) mod_proxy_http2: adding support for newly proposed 103 status code. + [Stefan Eissing] + + *) mpm_unix: Apache fails to start if previously crashed then restarted with + the same PID (e.g. in container). PR 60261. + [Val <valentin.bremond gmail.com>, Yann Ylavic] + + *) mod_http2: unannounced and multiple interim responses (status code < 200) + are parsed and forwarded to client until a final response arrives. + [Stefan Eissing] + + *) mod_proxy_http2: improved robustness when main connection is closed early + by resetting all ongoing streams against the backend. + [Stefan Eissing] + + *) mod_http2: allocators from slave connections are released earlier, + resulting in less overall memory use on busy, long lived connections. + [Stefan Eissing] + + *) mod_remoteip: Pick up where we left off during a subrequest rather + than running with the modified XFF but original TCP address. + PR 49839/PR 60251 + + *) http: Respond with "408 Request Timeout" when a timeout occurs while + reading the request body. [Yann Ylavic] + + *) mod_http2: connection shutdown revisited: corrected edge cases on + shutting down ongoing streams, changed log warnings to be less noisy + when waiting on long running tasks. [Stefan Eissing] + + *) mod_http2: changed all AP_DEBUG_ASSERT to ap_assert to have them + available also in normal deployments. [Stefan Eissing] + + *) mod_http2/mod_proxy_http2: 100-continue handling now properly implemented + up to the backend. Reused HTTP/2 proxy connections with more than a second + not used will block request bodies until a PING answer is received. + Requests headers are not delayed by this, since they are repeatable in + case of failure. This greatly increases robustness, especially with + busy server and/or low keepalive connections. [Stefan Eissing] + + *) mod_proxy_http2: fixed duplicate symbols with mod_http2. + [Stefan Eissing] + + *) mod_http2: rewrite of how responses and trailers are transferred between + master and slave connection. Reduction of internal states for tasks + and streams, stability. Heuristic id generation for slave connections + to better keep promise of connection ids unique at given point int time. + Fix for mod_cgid interop in high load situations. + Fix for handling of incoming trailers when no request body is sent. + [Stefan Eissing] + + *) mod_http2: fix suspended handling for streams. Output could become + blocked in rare cases. [Stefan Eissing] + + *) mpm_winnt: Prevent a denial of service when the 'data' AcceptFilter is in + use by replacing it with the 'connect' filter. PR 59970. [Jacob Champion] + + *) mod_cgid: Resolve a case where a short CGI response causes a subsequent + CGI to be killed prematurely, resulting in a truncated subsequent + response. [Eric Covener] + + *) mod_proxy_hcheck: Set health check URI and expression correctly for health + check worker. PR 60038 [zdeno <zdeno@scnet.sk>] + + *) mod_http2: if configured with nghttp2 1.14.0 and onward, invalid request + headers will immediately reset the stream with a PROTOCOL error. Feature + logged by module on startup as 'INVHD' in info message. + [Stefan Eissing] + + *) mod_http2: fixed handling of stream buffers during shutdown. + [Stefan Eissing] + + *) mod_reqtimeout: Fix body timeout disabling for CONNECT requests to avoid + triggering mod_proxy_connect's AH01018 once the tunnel is established. + [Yann Ylavic] + + *) ab: Set the Server Name Indication (SNI) extension on outgoing TLS + connections (unless -I is specified), according to the Host header (if + any) or the requested URL's hostname otherwise. [Yann Ylavic] + + *) mod_proxy_fcgi: avoid loops when ProxyErrorOverride is enabled + and the error documents are proxied. PR 55415. [Luca Toscano] + + *) mod_proxy_fcgi: read the whole FCGI response even when the content + has not been modified (HTTP 304) or in case of a precondition failure + (HTTP 412) to avoid subsequent bogus reads and confusing + error messages logged. [Luca Toscano] + + *) mod_http2: h2 status resource follows latest draft, see + http://www.ietf.org/id/draft-benfield-http2-debug-state-01.txt + [Stefan Eissing] + + *) mod_http2: handling graceful shutdown gracefully, e.g. handling existing + streams to the end. [Stefan Eissing] + + *) mod_proxy_{http,ajp,fcgi}: don't reuse backend connections with data + available before the request is sent. PR 57832. [Yann Ylavic] + + *) mod_proxy_balancer: Prevent redirect loops between workers within a + balancer by limiting the number of redirects to the number balancer + members. PR 59864 [Ruediger Pluem] + + *) mod_proxy: Correctly consider error response codes by the backend when + processing failonstatus. PR 59869 [Ruediger Pluem] + + *) mod_dav: Add dav_get_provider_name() function to obtain the name + of the provider from mod_dav. [Graham Leggett] + + *) mod_dav: Add support for childtags to dav_error. + [Jari Urpalainen <jari.urpalainen nokia.com>] + + *) mod_proxy_fcgi: Fix 2.4.23 breakage for mod_rewrite per-dir and query + string showing up in SCRIPT_FILENAME. PR59815 + + *) mod_include: Fix a potential memory misuse while evaluating expressions. + PR59844. [Eric Covener] + + *) mod_http2: new H2CopyFiles directive that changes treatment of file + handles in responses. Necessary in order to fix broken lifetime handling + in modules such as mod_wsgi. + + *) mod_http2: removing timeouts on master connection while requests are + being processed. Requests may timeout, but the master only times out when + no more requests are active. [Stefan Eissing] + + *) mod_http2: fixes connection flush when answering SETTINGS without any + stream open. [Moto Ishizawa <@summerwind>, Stefan Eissing] + +Changes with Apache 2.4.23 + + *) mod_ssl: reset client-verify state of ssl when aborting renegotiations. + [Erki Aring <erki@example.ee>, Stefan Eissing] + + *) mod_sed: Fix 'x' command processing. [Christophe Jaillet] + + *) configure: Fix ./configure edge-case failures around dependencies + of mod_proxy_hcheck. [William Rowe, Ruediger Pluem, Jeff Trawick] + +Changes with Apache 2.4.22 + + *) mod_http2: fix for request abort when connections drops, introduced in + 1.5.8 + +Changes with Apache 2.4.21 + + *) core: Added support for HTTP code 451. PR 58985. + [Yehuda Katz <yehuda ymkatz.net>, Jim Jagielski] + + *) ab: Use caseless matching for HTTP tokens (e.g. content-length). PR 59111. + [Yann Ylavic] + + *) mod_http2: more rigid error handling in DATA frame assembly, leading + to deterministic connection errors if assembly fails. + [Stefan Eissing, Pal Nilsen <https://github.com/maedox>] + + *) abs: Include OPENSSL_Applink when compiling on Windows, to resolve + failures under Visual Studio 2015 and other mismatched MSVCRT flavors. + PR59630 [Jan Ehrhardt <phpdev ehrhardt.nl>] + + *) mod_ssl: Add "no_crl_for_cert_ok" flag to SSLCARevocationCheck directive + to opt-in previous behaviour (2.2) with CRLs verification when checking + certificate(s) with no corresponding CRL. [Yann Ylavic] + + *) mpm_event, mpm_worker: Fix computation of MinSpareThreads' lower bound + according the number of listeners buckets. [Yann Ylavic] + + *) Add ap_cstr_casecmp[n]() - placeholder of apr_cstr_casecmp[n] functions + for case-insensitive C/POSIX-locale token comparison. + [Jim Jagielski, William Rowe, Yann Ylavic, Branko Čibej] + + *) mod_userdir: Constify and save a few bytes in the conf pool when + parsing the "UserDir" directive. [Christophe Jaillet] + + *) mod_cache: Fix (max-stale with no '=') and enforce (check + integers after '=') Cache-Control header parsing. + [Christophe Jaillet] + + *) core: Add -DDUMP_INCLUDES configtest option to show the tree + of Included configuration files. + [Jacob Champion <champion.pxi gmail.com>] + + *) mod_proxy_fcgi: Avoid passing a filename of proxy:fcgi:// as + SCRIPT_FILENAME to a FastCGI server. PR59618. + [Jacob Champion <champion.pxi gmail.com>] + + *) mod_dav: Add dav_get_provider_name() function to obtain the name + of the provider from mod_dav. + [Jari Urpalainen <jari.urpalainen nokia.com>] + + *) mod_proxy_http2: properly care for HTTP2 flow control of the frontend + connection is HTTP/1.1. [Patch supplied by Evgeny Kotkov] + + *) mod_http2: improved cleanup of connection/streams/tasks to always + have deterministic order regardless of event initiating it. Addresses + reported crashes due to memory read after free issues. + [Stefan Eissing] + + *) mod_ssl: Correct the interaction between SSLProxyCheckPeerCN and newer + SSLProxyCheckPeerName directives since release 2.4.5, such that disabling + either disables both, and that enabling either triggers the new, more + comprehensive SSLProxyCheckPeerName behavior. Only a single configuration + remains to enable the legacy behavior, which is to explicitly disable + SSLProxyCheckPeerName, and enable SSLProxyCheckPeerCN. [William Rowe] + + *) mod_include: add the <!--#comment ...> syntax in order to include comments + in a SSI file. [Christophe Jaillet based on a suggestion from Rob] + + *) mod_http2: improved event handling for suspended streams, responses + and window updates. [Stefan Eissing] + + *) mod_proxy_hcheck: Provide for dynamic background health + checks on reverse proxies associated with BalancerMember + workers. [Jim Jagielski] + + *) mod_http2: Fix async write issue that led to selection of wrong timeout + vs. keepalive timeout selection for idle sessions. [Stefan Eissing] + + *) mod_http2: checking LimitRequestLine, LimitRequestFields and + LimitRequestFieldSize configurated values for incoming streams. Returning + HTTP status 431 for too long/many headers fields and 414 for a too long + pseudo header. [Stefan Eissing] + + *) mod_http2: tracking conn_rec->current_thread on slave connections, so + that mod_lua finds the correct one. Fixes PR 59542. [Stefan Eissing] + + *) mod_proxy_http2: new experimental http2 proxy module for h2: and h2c: proxy + urls. Part of the httpd mod_proxy framework, common settings apply. + Requests from the same HTTP/2 frontend connection against the same backend + are aggregated on a single connection. + [Stefan Eissing] + + *) mod_http2: slave connections have conn_rec->aborted flag set when a stream + has been reset by the client. [Stefan Eissing] + + *) mod_http2: merge of some 2.4.x adaptions re filters on slave connections. + Small fixes in bucket beams when forwarding file buckets. Output handling + on master connection uses less FLUSH and passes automatically when more + than half of H2StreamMaxMemSize bytes have accumulated. + Workaround for http: when forwarding partial file buckets to keep the + output filter from closing these too early. [Stefan Eissing] + + *) mod_http2: elimination of fixed master connection buffer for TLS + connections. New scratch bucket handling optimized for TLS write sizes. + File bucket data read directly into scratch buffers, avoiding one + copy. Non-TLS connections continue to pass buckets unchanged to the core + filters to allow sendfile() usage. [Stefan Eissing] + + *) mod_http2/mod_proxy_http2: h2_request.c is no longer shared between these + modules. This simplifies building on platforms such as Windows, as module + reference used in logging is now clear. [Stefan Eissing] + + *) Scoreboard: Fix a regression in 2.4.20 that causes wrong request data + to be displayed on the status page. PR 59333. [Yann Ylavic, William Rowe] + + *) mod_http2: fixed a bug that caused mod_proxy_http2 to be called for window + updates on requests it had already reported done. Added synchronization + on early connection/stream close that lets ongoing requests safely drain + their input filters. + [Stefan Eissing] + + *) mod_http2: scoreboard updates that summarize the h2 session (and replace + the last request information) will only happen when the session is idle or + in shutdown/done phase. [Stefan Eissing] + + *) mod_http2: new "bucket beam" technology to transport buckets across + threads without buffer copy. Delaying response start until flush or + enough body data has been accumulated. Overall significantly smaller + memory footprint. [Stefan Eissing] + + *) core: New CGIVar directive can configure REQUEST_URI to represent the + current URI being processed instead of always the original request. + [Jeff Trawick] + + *) scoreboard/status: Restore behavior of showing workers' previous Client, + VHost and Request values when idle, like in 2.4.18 and earlier. + + *) mod_http2: r->protocol changed to "HTTP/2.0" (was "HTTP/2") as this will + give expected syntax in CGI's SERVER_PROTOCOL is more compatible with + existing major/minor handling. Fixes PR 59313. + + *) mod_http2: disabling mmap for file buckets transport due to segmenation + faults when files change on the fly. + +Changes with Apache 2.4.20 + + *) SECURITY: CVE-2016-1546 (cve.mitre.org) + mod_http2: restricting number of concurrent stream workers per connection + if client is slow. + + *) core: Do not read .htaccess if AllowOverride and AllowOverrideList + are "None". PR 58528. + [Michael Schlenker <msc contact.de, Ruediger Pluem, Daniel Ruggeri] + + *) mod_proxy_express: Fix possible use of DB handle after close. PR 59230. + [Petr <pgajdos suse.cz>] + + *) core/util_script: relax alphanumeric filter of environment variable names + on Windows to allow '(' and ')' for passing PROGRAMFILES(X86) et.al. + unadulterated in 64 bit versions of Windows. PR 46751. + [John <john leineweb de>] + + *) mod_http2: incrementing keepalives on each request started so that logging + %k gives increasing numbers per master http2 connection. + New documented variables in env, usable in custom log formats: H2_PUSH, + H2_PUSHED, H2_PUSHED_ON, H2_STREAM_ID and H2_STREAM_TAG. + [Stefan Eissing] + + *) mod_http2: more efficient passing of response bodies with less contention + and file bucket forwarding. [Stefan Eissing] + + *) mod_http2: fix for missing score board updates on request count, fix for + memory leak on slave connection reuse. [Stefan Eissing] + + *) mod_http2: Fix build on Windows from dsp files. + [Stefan Eissing] + +Changes with Apache 2.4.19 + + *) mod_ssl: Add missing Upgrade/Connection headers in case of TRACE or + OPTIONS * requests. PR 58688. [William Rowe] + + *) mod_include: Add variable DOCUMENT_ARGS, with the arguments to the + request for the SSI document. [Jeff Trawick] + + *) mod_authz_host: Add a new "forward-dns" authorization type, not relying on + reverse DNS lookups. [Fabien] + + *) mod_proxy_http2: new experimental http2 proxy module for h2: and h2c: proxy + urls. Uses backend connections for concurrent requests if frontend + connection is http2 as well. + [Stefan Eissing] + + *) mod_ssl: Add hooks to allow other modules to perform processing at + several stages of initialization and connection handling. See + mod_ssl_openssl.h. [Jeff Trawick] + + *) mod_http2: disabling PUSH when client sends GOAWAY. Slave connections are + reused for several requests, improved performance and better memory use. + [Stefan Eissing] + + *) mod_rewrite: Don't implicitly URL-escape the original query string + when no substitution has changed it (like PR50447 but server context) + [Evgeny Kotkov <evgeny.kotkov visualsvn.com>] + + *) mod_http2: fixes problem with wrong lifetime of file buckets on main + connection. [Stefan Eissing] + + *) mod_http2: fixes incorrect denial of requests without :authority header. + [Stefan Eissing] + + *) mod_reqtimeout: Prevent long response times from triggering a timeout once + the request has been fully read. PR 59045. [Yann Ylavic] + + *) ap_expr: expression support for variable HTTP2=on|off. [Stefan Eissing] + + *) mod_http2: give control to async mpm for keepalive timeouts only when + no streams are open and even if only after 1 sec delay. Under load, event + mpm discards connections otherwise too quickly. [Stefan Eissing] + + *) mod_ssl: Don't lose track of the SSL context if an unlikely failure occurs + in ssl_init_ssl_connection(). [Graham Leggett] + + *) mod_rewrite: Add QSL|qslast flag to allow rewrites to files with + literal question marks in their names. PR 58777. [Eric Covener] + + *) event: use pre_connection hook to properly initialize connection state for + slave connections. use protocol_switch hook to initialize server config + early based on SNI selected vhost. + [Stefan Eissing] + + *) hostname: Test and log useragent_host per-request across various modules, + including the scoreboard, expression and rewrite engines, setenvif, + authz_host, access_compat, custom logging, ssl and REMOTE_HOST variables. + PR55348 [William Rowe] + + *) core: Track the useragent_host per-request when mod_remoteip or similar + modules track a per-request useragent_ip. Modules should be updated + to inquire for ap_get_useragent_host() in place of ap_get_remote_host(). + [William Rowe] + + *) core: fix a bug in <UnDefine ...> directive processing. When used, the last + <Define...>'ed variable was also withdrawn. PR 59019 + [Christophe Jaillet] + + *) mod_http2: Accept-Encoding is, when present on the initiating request, + added to push promises. This lets compressed content work in pushes. + by the client. [Stefan Eissing] + + *) mod_http2: fixed possible read after free when streams were cancelled early + by the client. [Stefan Eissing] + + *) mod_http2: fixed possible deadlock during connection shutdown. Thanks to + @FrankStolle for reporting and getting the necessary data. + [Stefan Eissing] + + *) mod_http2: fixed apr_uint64_t formatting in a log statement to user proper + APR def, thanks to @Sp1l. + + *) mod_http2: number of worker threads allowed to a connection is adjusting + dynamically. Starting with 4, the number is doubled when streams can be + served without block on http/2 connection flow. The number is halfed, when + the server has to wait on client flow control grants. + This can happen with a maximum frequency of 5 times per second. + When a connection occupies too many workers, repeatable requests + (GET/HEAD/OPTIONS) are cancelled and placed back in the queue. Should that + not suffice and a stream is busy longer than the server timeout, the + connection will be aborted with error code ENHANCE_YOUR_CALM. + This does *not* limit the number of streams a client may open, rather the + number of server threads a connection might use. + [Stefan Eissing] + + *) mod_http2: allowing link header to specify multiple "rel" values, + space-separated inside a quoted string. Prohibiting push when Link + parameter "nopush" is present. + [Stefan Eissing] + + *) mod_http2: reworked connection state handling. Idle connections accept a + GOAWAY from the client without further reply. Otherwise the + module makes a best effort to send one last GOAWAY to the client. + + *) mod_http2: the values from standard directives Timeout and KeepAliveTimeout + properly are applied to http/2 connections. + [Stefan Eissing] + + *) mod_http2: idle connections are returned to async mpms. new hook + "pre_close_connection" used to send GOAWAY frame when not already done. + Setting event mpm server config "by hand" for the main connection to + the correct negotiated server. + [Stefan Eissing] + + *) mod_http2: keep-alive blocking reads are done with 1 second timeouts to + check for MPM stopping. Will announce early GOAWAY and finish processing + open streams, then close. + [Stefan Eissing] + + *) mod_http2: bytes read/written on slave connections are reported via the + optional mod_logio functions. Fixes PR 58871. + + *) prefork: Initialize the POD when running in ONE_PROCESS (or -X) mode to + avoid a crash. [Jan Kaluza, Yann Ylavic] + + *) mod_ssl: When SSLVerify is disabled (NONE), don't force a renegotiation if + the SSLVerifyDepth applied with the default/handshaken vhost differs from + the one applicable with the finally selected vhost. [Yann Ylavic] + + *) core: Ensure that httpd exits with an error status when the MPM fails + to run. [Yann Ylavic] + + *) mod_ssl: Fix a possible memory leak on restart for custom [EC]DH params. + [Jan Kaluza, Yann Ylavic] + + *) mod_ssl: Add SSLOCSPProxyURL to add the possibility to do all queries + to OCSP responders through a HTTP proxy. [Ruediger Pluem] + + *) mod_proxy: Play/restore the TLS-SNI on new backend connections which + had to be issued because the remote closed the previous/reusable one + during idle (keep-alive) time. [Yann Ylavic] + + *) mod_cache_socache: Fix a possible cached entity body corruption when it + is received from an origin server in multiple batches and forwarded by + mod_proxy. [Yann Ylavic] + + *) core: Add expression support to SetHandler. + [Eric Covener] + + *) mod_remoteip: Prevent an external proxy from presenting an internal + proxy. PR 55962. [Mike Rumph] + + *) core: Prevent a server crash in case of an invalid CONNECT request with + a custom error page for status code 400 that uses server side includes. + PR 58929 [Ruediger Pluem] + + *) mod_ssl: handle TIMEOUT on empty SSL input as non-fatal, returning + APR_TIMEUP and preserving connection state for later retry. + [Stefan Eissing] + + *) mod_ssl: Save some TLS record (application data) fragmentations by + including the last and subsequent suitable buckets when coalescing. + [Yann Ylavic] + + *) mod_proxy_fcgi: Suppress HTTP error 503 and message 01075, + "Error dispatching request", when the cause appears to be + due to the client closing the connection. + PR58118. [Tobias Adolph <adolph lrz.de>] + + *) mod_cgid: Message AH02550, failure to flush a response to the client, + is now logged at TRACE1 level to match the underlying core output filter + severity. [Eric Covener] + + *) mime.types: add common extension "m4a" for MPEG 4 Audio. + PR 57895 [Dylan Millikin <dylan.millikin gmail.com>] + + *) Added many log numbers to log statements that had none. + [Rainer Jung] + + *) mod_log_config: Add GlobalLog to allow a globally defined log to + be inherited by virtual hosts that define a CustomLog. + [Edward Lu] + + *) mod_http2: connections how keep a "push diary" where hashes of already + pushed resources are kept. See directive H2PushDiarySize for managing this. + Push diaries can be initialized by clients via the "Cache-Digest" request + header. This carries a base64url encoded. compressed Golomb set as described + in https://datatracker.ietf.org/doc/draft-kazuho-h2-cache-digest/ + Introduced a status handler for HTTP/2 connections, giving various counters + and statistics about the current connection, plus its cache digest value + in a JSON record. Not a replacement for more HTTP/2 in the server status. + Configured as + <Location "/http2-status"> + SetHandler http2-status + </Location> + [Stefan Eissing] + + *) mod_http2: Fixed flushing of last GOAWAY frame. Previously, that frame + did not always reach the client, causing some to fail the next request. + Fixed calculation of last stream id accepted as described in rfc7540. + Reading in KEEPALIVE state now correctly shown in scoreboard. + Fixed possible race in connection shutdown after review by Ylavic. + Fixed segfault on connection shutdown, callback ran into a semi dismantled session. + [Stefan Eissing] + + *) mod_http2: Added support for experimental accept-push-policy draft + (https://tools.ietf.org/html/draft-ruellan-http-accept-push-policy-00). Clients + may now influence server pushes by sending accept-push-policy headers. + [Stefan Eissing] + + *) mod_http2: new r->subprocess_env variables HTTP2 and H2PUSH, set to "on" + when available for request. + [Stefan Eissing] + + *) mod_http2: fixed bug in input window size calculation by moving chunked + request body encoding into later stage of processing. Fixes PR 58825. + [Stefan Eissing] + + *) core: new hook "pre_close_connection" which is run before the lingering + close of connections is started. This gives protocol handlers one last + chance to use a connection before it goes down. + [Stefan Eissing] + + *) mod_status/scoreboard: showing connection protocol in new column, new + ap_update_child_status methods for updating server/description. mod_ssl + sets vhost negotiated by servername directly. + [Stefan Eissing] + +Changes with Apache 2.4.18 + + *) mod_ssl: for all ssl_engine_vars.c lookups, fall back to master connection + if conn_rec itself holds no valid SSLConnRec*. Fixes PR58666. + [Stefan Eissing] + + *) mod_http2: connection level window for flow control is set to protocol + maximum of 2GB-1, preventing window exhaustion when sending data on many + streams with higher cumulative window size. + Reducing write frequency unless push promises need to be flushed. + [Stefan Eissing] + + *) mod_http2: required minimum version of libnghttp2 is 1.2.1 + [Stefan Eissing] + + *) mod_proxy_fdpass: Fix AH01153 error when using the default configuration. + In earlier version of httpd, you can explicitly set the 'flusher' parameter + to 'flush' as a workaround. (i.e. flusher=flush) + Add documentation for the 'flusher' parameter when defining a proxy worker. + [Christophe Jaillet] + + *) mod_ssl: For the "SSLStaplingReturnResponderErrors off" case, make sure + to only staple responses with certificate status "good". [Kaspar Brand] + + *) mod_http2: new directive 'H2PushPriority' to allow priority specifications + on server pushed streams according to their content-type. + [Stefan Eissing] + + *) mod_http2: fixes crash on connection abort for a busy connection. + fixes crash on a request that did not produce any response. + [Stefan Eissing] + + *) mod_http2: trailers are sent after response body if set in request_rec + trailers_out before the end-of-request bucket is sent through the + output filters. [Stefan Eissing] + + *) mod_http2: incoming trailers (headers after request body) are properly + forwarded to the processing engine. [Stefan Eissing] + + *) mod_http2: new directive 'H2Push' to en-/disable HTTP/2 server + pushes a server/virtual host. Pushes are initiated by the presence + of 'Link:' headers with relation 'preload' on a response. [Stefan Eissing] + + *) mod_http2: write performance of http2 improved for larger resources, + especially static files. [Stefan Eissing] + + *) core: if the first HTTP/1.1 request on a connection goes to a server that + prefers different protocols, these protocols are announced in a Upgrade: + header on the response, mentioning the preferred protocols. + [Stefan Eissing] + + *) mod_http2: new directives 'H2TLSWarmUpSize' and 'H2TLSCoolDownSecs' + to control TLS record sizes during connection lifetime. + [Stefan Eissing] + + *) mod_http2: new directive 'H2ModernTLSOnly' to enforce security + requirements of RFC 7540 on TLS connections. [Stefan Eissing] + + *) core: add ap_get_protocol_upgrades() to retrieve the list of protocols + that a client could possibly upgrade to. Use in first request on a + connection to announce protocol choices. [Stefan Eissing] + + *) mod_http2: reworked deallocation on connection shutdown and worker + abort. Separate parent pool for all workers. worker threads are joined + on planned worker shutdown. [Yann Ylavic, Stefan Eissing] + + *) mod_ssl: when receiving requests for other virtual hosts than the handshake + server, the SSL parameters are checked for equality. With equal + configuration, requests are passed for processing. Any change will trigger + the old behaviour of "421 Misdirected Request". + SSL now remembers the cipher suite that was used for the last handshake. + This is compared against for any vhost/directory cipher specification. + Detailed examination of renegotiation is only done when these do not + match. + Renegotiation is 403ed when a master connection is present. Exact reason + is given additionally in a request note. [Stefan Eissing] + + *) mod_ssl: Make the output filter more friendly with deferred write and + response pipelining. [Yann Ylavic, Joe Orton] + + *) core: Fix scoreboard crash (SIGBUS) on hardware requiring strict 64bit + alignment (SPARC64, PPC64). [Yann Ylavic] + + *) mod_cache: Accept HT (Horizontal Tab) when parsing cache related header + fields as described in RFC7230. [Christophe Jaillet] + + *) core/util_script: making REDIRECT_URL a full URL is now opt-in + via new 'QualifyRedirectURL' directive. + + *) core: Limit to ten the number of tolerated empty lines between request, + and consume them before the pipelining check to avoid possible response + delay when reading the next request without flushing. [Yann Ylavic] + + *) mod_ssl: Extend expression parser registration to support ssl variables + in any expression using mod_rewrite syntax "%{SSL:VARNAME}" or function + syntax "ssl(VARNAME)". [Rainer Jung] + +Changes with Apache 2.4.17 + + *) mod_http2: added donated HTTP/2 implementation via core module. Similar + configuration options to mod_ssl. [Stefan Eissing] + + *) mod_proxy: don't recycle backend announced "Connection: close" connections + to avoid reusing it should the close be effective after some new request + is ready to be sent. [Yann Ylavic] + + *) mod_substitute: Allow to configure the patterns merge order with the new + SubstituteInheritBefore on|off directive. PR 57641 + [Marc.Stern <Marc.Stern approach.be>, Yann Ylavic, William Rowe] + + *) mod_proxy: Fix ProxySourceAddress binding failure with AH00938. + PR 56687. [Arne de Bruijn <apache arbruijn.dds.nl> + + *) mod_ssl: Support compilation against libssl built with OPENSSL_NO_SSL3, + and change the compiled-in default for SSL[Proxy]Protocol to "all -SSLv3", + in accordance with RFC 7568. PR 58349, PR 57120. [Kaspar Brand] + + *) mod_ssl: append :!aNULL:!eNULL:!EXP to the cipher string settings, + instead of prepending !aNULL:!eNULL:!EXP: (as was the case in 2.4.7 + and later). Enables support for configuring the SUITEB* cipher + strings introduced in OpenSSL 1.0.2. PR 58213. [Kaspar Brand] + + *) mod_ssl: Add support for extracting the msUPN and dnsSRV forms + of subjectAltName entries of type "otherName" into + SSL_{CLIENT,SERVER}_SAN_OTHER_{msUPN,dnsSRV}_n environment + variables. Addresses PR 58020. [Jan Pazdziora <jpazdziora redhat.com>, + Kaspar Brand] + + *) mod_logio: Fix logging of %^FB (time to first byte) on the first request on + an SSL connection. PR 58454. + [Konstantin J. Chernov <k.j.chernov gmail.com>] + + *) mod_cache: r->err_headers_out is not merged into + r->headers when mod_cache is enabled and the response + is cached for the first time. [Edward Lu] + + *) mod_slotmem_shm: Fix slots/SHM files names on restart for systems that + can't create new (clear) slots while previous children gracefully stopping + still use the old ones (e.g. Windows, OS2). mod_proxy_balancer failed to + restart whenever the number of configured balancers/members changed during + restart. PR 58024. [Yann Ylavic] + + *) core/util_script: make REDIRECT_URL a full URL. PR 57785. [Nick Kew] + + *) MPMs: Support SO_REUSEPORT to create multiple duplicated listener + records for scalability. [Yingqi Lu <yingqi.lu@intel.com>, + Jeff Trawick, Jim Jagielski, Yann Ylavic] + + *) mod_alias: Introduce expression parser support for Alias, ScriptAlias + and Redirect. Limit Redirect expressions to directory (Location) context + and redirect statuses (implicit or explicit). + [Graham Leggett, Yann Ylavic, Ruediger Pluem] + + *) mod_proxy: Fix a race condition that caused a failed worker to be retried + before the retry period is over. [Ruediger Pluem] + + *) mod_autoindex: Allow autoindexes when neither mod_dir nor mod_mime are + loaded. [Eric Covener] + + *) mod_rewrite: Allow cookies set by mod_rewrite to contain ':' by accepting + ';' as an alternate separator. PR47241. + [<bugzilla schermesser com>, Eric Covener] + + *) apxs: Add HTTPD_VERSION and HTTPD_MMN to the variables available with + apxs -q. PR58202. [Daniel Shahaf <danielsh apache.org>] + + *) mod_rewrite: Avoid a crash when lacking correct DB access permissions + when using RewriteMap with MapType dbd or fastdbd. [Christophe Jaillet] + + *) mod_authz_dbd: Avoid a crash when lacking correct DB access permissions. + PR 57868. [Jose Kahan <jose w3.org>, Yann Ylavic] + + *) mod_socache_memcache: Add the 'MemcacheConnTTL' directive to control how + long to keep idle connections with the memcache server(s). + Change default value from 600 usec (!) to 15 sec. PR 58091 + [Christophe Jaillet] + + *) mod_dir: Prevent the internal identifier "httpd/unix-directory" from + appearing as a Content-Type response header when requests for a directory + are rewritten by mod_rewrite. [Eric Covener] + +Changes with Apache 2.4.16 + + *) http: Fix LimitRequestBody checks when there is no more bytes to read. + [Michael Kaufmann <mail michael-kaufmann.ch>] + + *) mod_alias: Revert expression parser support for Alias, ScriptAlias + and Redirect due to a regression (introduced in 2.4.13, not released). + + *) mod_reqtimeout: Don't let pipelining checks and keep-alive times interfere + with the timeouts computed for subsequent requests. PR 56729. + [Eric Covener, Yann Ylavic] + + *) core: Avoid a possible truncation of the faulty header included in the + HTML response when LimitRequestFieldSize is reached. [Yann Ylavic] + + *) mod_ldap: In some case, LDAP_NO_SUCH_ATTRIBUTE could be returned instead + of an error during a compare operation. [Eric Covener] + +Changes with Apache 2.4.15 (not released) + + *) mod_ext_filter, mod_charset_lite: Avoid inadvertent filtering of protocol + data during read of chunked request bodies. PR 58049. + [Edward Lu <Chaosed0 gmail.com>] + + *) mod_ldap: Stop leaking LDAP connections when 'LDAPConnectionPoolTTL 0' + is configured. PR 58037. [Ted Phelps <phelps gnusto.com>] + + *) core: Allow spaces after chunk-size for compatibility with implementations + using a pre-filled buffer. [Yann Ylavic, Jeff Trawick] + + *) mod_ssl: Remove deprecated SSLCertificateChainFile warning. + [Yann Ylavic] + +Changes with Apache 2.4.14 (not released) + + *) SECURITY: CVE-2015-3183 (cve.mitre.org) + core: Fix chunk header parsing defect. + Remove apr_brigade_flatten(), buffering and duplicated code from + the HTTP_IN filter, parse chunks in a single pass with zero copy. + Limit accepted chunk-size to 2^63-1 and be strict about chunk-ext + authorized characters. [Graham Leggett, Yann Ylavic] + + *) SECURITY: CVE-2015-3185 (cve.mitre.org) + Replacement of ap_some_auth_required (unusable in Apache httpd 2.4) + with new ap_some_authn_required and ap_force_authn hook. [Ben Reser] + +Changes with Apache 2.4.13 (not released) + + *) SECURITY: CVE-2015-0253 (cve.mitre.org) + core: Fix a crash with ErrorDocument 400 pointing to a local URL-path + with the INCLUDES filter active, introduced in 2.4.11. PR 57531. + [Yann Ylavic] + + *) SECURITY: CVE-2015-0228 (cve.mitre.org) + mod_lua: A maliciously crafted websockets PING after a script + calls r:wsupgrade() can cause a child process crash. + [Edward Lu <Chaosed0 gmail.com>] + + *) mod_proxy: Don't put the worker in error state for 500 or 503 errors + returned by the backend unless failonstatus is configured to. PR 56925. + [Yann Ylavic] + + *) core: Don't lowercase the argument to SetHandler if it begins with + "proxy:unix". PR 57968. [Eric Covener] + + *) mod_ssl OCSP Stapling: Don't block initial handshakes while refreshing + the OCSP response for a different certificate. mod_ssl has an additional + global mutex, "ssl-stapling-refresh". PR 57131 (partial fix). + [Jeff Trawick] + + *) mod_authz_dbm: Fix crashes when "dbm-file-group" is used and + authz modules were loaded in the "wrong" order. [Joe Orton] + + *) mod_authn_dbd, mod_authz_dbd, mod_session_dbd, mod_rewrite: Fix lifetime + of DB lookup entries independently of the selected DB engine. PR 46421. + [Steven whitson <steven.whitson gmail com>, Jan Kaluza, Yann Ylavic]. + + *) In alignment with RFC 7525, the default recommended SSLCipherSuite + and SSLProxyCipherSuite now exclude RC4 as well as MD5. Also, the + default recommended SSLProtocol and SSLProxyProtocol directives now + exclude SSLv3. Existing configurations must be adjusted by the + administrator. [William Rowe] + + *) mod_ssl: Add support for extracting subjectAltName entries of type + rfc822Name and dNSName into SSL_{CLIENT,SERVER}_SAN_{Email,DNS}_n + environment variables. Also addresses PR 57207. [Kaspar Brand] + + *) dav_validate_request: avoid validating locks and ETags when there are + no If headers providing them on a resource we aren't modifying. + [Ben Reser] + + *) mod_proxy_scgi: ProxySCGIInternalRedirect now allows an alternate + response header to be used by the application, for when the application + or framework is unable to return Location in the internal-redirect + form. [Jeff Trawick] + + *) core: Cleanup the request soon/even if some output filter fails to + handle the EOR bucket. [Yann Ylavic] + + *) mpm_event: Allow for timer events duplicates. [Jim Jagielski, Yann Ylavic] + + *) mod_proxy, mod_ssl, mod_cache_socache, mod_socache_*: Support machine + readable server-status produced when using the "?auto" query string. + [Rainer Jung] + + *) mod_status: Add more data to machine readable server-status produced + when using the "?auto" query string. [Rainer Jung] + + *) mod_ssl: Check for the Entropy Gathering Daemon (EGD) availability at + configure time (RAND_egd), and complain if SSLRandomSeed requires using + it otherwise. [Bernard Spil <pil.oss gmail com>, Stefan Sperling, + Kaspar Brand] + + *) mod_ssl: make sure to consistently output SSLCertificateChainFile + deprecation warnings, when encountered in a VirtualHost block. + [Falco Schwarz <hiding falco.me>] + + *) mod_log_config: Add "%{UNIT}T" format to output request duration in + seconds, milliseconds or microseconds depending on UNIT ("s", "ms", "us"). + [Ben Reser, Rainer Jung] + + *) Allow FallbackResource to work when a directory is requested and + there is no autoindex nor DirectoryIndex. + [Jack <tjerk.meesters gmail.com>, Eric Covener] + + *) mod_proxy_wstunnel: Bypass the handler while the connection is not + upgraded to WebSocket, so that other modules can possibly take over + the leading HTTP requests. [Yann Ylavic] + + *) mod_http: Fix incorrect If-Match handling. PR 57358 + [Kunihiko Sakamoto <ksakamoto google.com>] + + *) mod_ssl: Add a warning if protocol given in SSLProtocol or SSLProxyProtocol + will override other parameters given in the same directive. This could be + a missing + or - prefix. PR 52820 [Christophe Jaillet] + + *) core, modules: Avoid error response/document handling by the core if some + handler or input filter already did it while reading the request (causing + a double response body). [Yann Ylavic] + + *) mod_proxy_ajp: Fix client connection errors handling and logged status + when it occurs. PR 56823. [Yann Ylavic] + + *) mod_proxy: Use the correct server name for SNI in case the backend + SSL connection itself is established via a proxy server. + PR 57139 [Szabolcs Gyurko <szabolcs gyurko.org>] + + *) mod_ssl: Fix possible crash when loading server certificate constraints. + PR 57694. [Paul Spangler <paul.spangler ni com>, Yann Ylavic] + + *) build: Don't load both mod_cgi and mod_cgid in the default configuration + if they're both built. [olli hauer <ohauer gmx.de>] + + *) mod_logio: Add LogIOTrackTTFB and %^FB logformat to log the time + taken to start writing response headers. [Eric Covener] + + *) mod_ssl: Avoid compilation errors with LibreSSL related to + the use of ENGINE_CTRL_CHIL_SET_FORKCHECK. + [Stuart Henderson <sthen openbsd.org>] + + *) mod_proxy_http: Use the "Connection: close" header for requests to + backends not recycling connections (disablereuse), including the default + reverse and forward proxies. [Yann Ylavic] + + *) mod_proxy: Add ap_connection_reusable() for checking if a connection + is reusable as of this point in processing. [Jeff Trawick] + + *) mod_proxy_wstunnel: Avoid an empty response by failing with 502 (Bad + Gateway) when no response is ever received from the backend. + [Jan Kaluza] + + *) core_filters: Restore/disable TCP_NOPUSH option after non-blocking + sendfile. PR 53253. [Yann Ylavic] + + *) mod_buffer: Forward flushed input data immediately and avoid (unlikely) + access to freed memory. [Yann Ylavic, Christophe Jaillet] + + *) core: Add CGIPassAuth directive to control whether HTTP authorization + headers are passed to scripts as CGI variables. PR 56855. [Jeff + Trawick] + + *) core: Initialize scoreboard's used optional functions on graceful restarts + to avoid a crash when relocation occurs. PR 57177. [Yann Ylavic] + + *) mod_dav: Avoid a potential integer underflow in the lock timeout value sent + back to a client. The answer to a LOCK request could be an extremely large + integer if the time needed to lock the resource was longer that the + requested timeout given in the LOCK request. In such a case, we now answer + "Second-0". PR55420 + [Christophe Jaillet] + + *) mod_cgid: Within the first minute of a server start or restart, + allow mod_cgid to retry connecting to its daemon process. Previously, + 'No such file or directory: unable to connect to cgi daemon...' could + be logged without an actual retry. PR57685. + [Edward Lu <Chaosed0 gmail.com>] + + *) mod_proxy: Use the original (non absolute) form of the request-line's URI + for requests embedded in CONNECT payloads used to connect SSL backends via + a ProxyRemote forward-proxy. PR 55892. [Hendrik Harms <hendrik.harms + gmail com>, William Rowe, Yann Ylavic] + + *) http: Make ap_die() robust against any HTTP error code and not modify + response status (finally logged) when nothing is to be done. PR 56035. + [Yann Ylavic] + + *) mod_proxy_connect/wstunnel: If both client and backend sides get readable + at the same time, don't lose errors occurring while forwarding on the first + side when none occurs next on the other side, and abort. [Yann Ylavic] + + *) mod_rewrite: Improve relative substitutions in per-directory/htaccess + context for directories found by mod_userdir and mod_alias. These no + longer require RewriteBase to be specified. [Eric Covener] + + *) mod_proxy_http: Don't expect the backend to ack the "Connection: close" to + finally close those not meant to be kept alive by SetEnv proxy-nokeepalive + or force-proxy-request-1.0. [Yann Ylavic] + + *) core: If explicitly configured, use the KeepaliveTimeout value of the + virtual host which handled the latest request on the connection, or by + default the one of the first virtual host bound to the same IP:port. + PR56226. [Yann Ylavic] + + *) mod_lua: After a r:wsupgrade(), mod_lua was not properly + responding to a websockets PING but instead invoking the specified + script. PR57524. [Edward Lu <Chaosed0 gmail.com>] + + *) mod_ssl: Add the SSL_CLIENT_CERT_RFC4523_CEA variable, which provides + a combination of certificate serialNumber and issuer as defined by + CertificateExactMatch in RFC4523. [Graham Leggett] + + *) core: Add expression support to ErrorDocument. Switch from a fixed + sized 664 byte array per merge to a hash table. [Graham Leggett] + + *) ab: Add missing longest request (100%) to CSV export. + [Marcin Fabrykowski <bugzilla fabrykowski.pl>] + + *) mod_macro: Clear macros before initialization to avoid use-after-free + on startup or restart when the module is linked statically. PR 57525 + [apache.org tech.futurequest.net, Yann Ylavic] + + *) mod_alias: Introduce expression parser support for Alias, ScriptAlias + and Redirect. [Graham Leggett] + + *) mod_ssl: 'SSLProtocol ALL' was being ignored in virtual host context. + PR 57100. [Michael Kaufmann <apache-bugzilla michael-kaufmann.ch>, + Yann Ylavic] + + *) mpm_event: Avoid access to the scoreboard from the connection while + it is suspended (waiting for events). [Eric Covener, Jeff Trawick] + + *) mod_ssl: Fix renegotiation failures redirected to an ErrorDocument. + PR 57334. [Yann Ylavic]. + + *) mod_deflate: A misplaced check prevents limiting small bodies with the + new inflate limits. PR56872. [Edward Lu, Eric Covener, Yann Ylavic] + + *) mod_proxy_ajp: Forward SSL protocol name (SSLv3, TLSv1.1 etc.) as a + request attribute to the backend. Recent Tomcat versions will extract + it and provide it as a servlet request attribute named + "org.apache.tomcat.util.net.secure_protocol_version". [Rainer Jung] + + *) core: Optimize string concatenation in expression parser when evaluating + a string expression. [Rainer Jung] + + *) acinclude.m4: Generate #LoadModule directive in default httpd.conf for + every --enable-mpms-shared. PR 53882. [olli hauer <ohauer gmx.de>, + Yann Ylavic] + + *) mod_authn_dbd: Fix the error message logged in case of error while querying + the database. This is associated to AH01656 and AH01661. [Christophe Jaillet] + + *) mod_authz_groupfile: Reduce the severity of AH01667 from ERROR to DEBUG, + because it may be evaluated inside <RequireAny>. PR55523. [Eric Covener] + + *) mod_ssl: Fix small memory leak during initialization when ECDH is used. + [Jan Kaluza] + +Changes with Apache 2.4.12 + + *) mpm_winnt: Accept utf-8 (Unicode) service names and descriptions for + internationalization. [William Rowe] + + *) mpm_winnt: Normalize the error and status messages emitted by service.c, + the service control interface for Windows. [William Rowe] + + *) configure: Fix --enable-v4-mapped configuration on *BSD. PR 53824. + [ olli hauer <ohauer gmx.de>, Yann Ylavic ] + + *) Reverted <DirectoryMatch > behavior regression introduced in 2.4.11 + (not released). + +Changes with Apache 2.4.11 (not released) + + *) SECURITY: CVE-2014-3583 (cve.mitre.org) + mod_proxy_fcgi: Fix a potential crash due to buffer over-read, with + response headers' size above 8K. [Yann Ylavic, Jeff Trawick] + + *) SECURITY: CVE-2014-3581 (cve.mitre.org) + mod_cache: Avoid a crash when Content-Type has an empty value. + PR 56924. [Mark Montague <mark catseye.org>, Jan Kaluza] + + *) SECURITY: CVE-2014-8109 (cve.mitre.org) + mod_lua: Fix handling of the Require line when a LuaAuthzProvider is + used in multiple Require directives with different arguments. + PR57204 [Edward Lu <Chaosed0 gmail.com>] + + *) SECURITY: CVE-2013-5704 (cve.mitre.org) + core: HTTP trailers could be used to replace HTTP headers + late during request processing, potentially undoing or + otherwise confusing modules that examined or modified + request headers earlier. Adds "MergeTrailers" directive to restore + legacy behavior. [Edward Lu, Yann Ylavic, Joe Orton, Eric Covener] + + *) mod_ssl: New directive SSLSessionTickets (On|Off). + The directive controls the use of TLS session tickets (RFC 5077), + default value is "On" (unchanged behavior). + Session ticket creation uses a random key created during web + server startup and recreated during restarts. No other key + recreation mechanism is available currently. Therefore using session + tickets without restarting the web server with an appropriate frequency + (e.g. daily) compromises perfect forward secrecy. [Rainer Jung] + + *) mod_proxy_fcgi: Provide some basic alternate options for specifying + how PATH_INFO is passed to FastCGI backends by adding significance to + the value of proxy-fcgi-pathinfo. PR 55329. [Eric Covener] + + *) mod_proxy_fcgi: Enable UDS backends configured with SetHandler/RewriteRule + to opt-in to connection reuse and other Proxy options via explicitly + declared "proxy workers" (<Proxy unix:... enablereuse=on max=...) + [Eric Covener] + + *) mod_proxy: Add "enablereuse" option as the inverse of "disablereuse". + [Eric Covener] + + *) mod_proxy_fcgi: Enable opt-in to TCP connection reuse by explicitly + setting proxy option disablereuse=off. [Eric Covener] PR 57378. + + *) event: Update the internal "connection id" when requests + move from thread to thread. Reuse can confuse modules like + mod_cgid. PR 57435. [Michael Thorpe <mike gistnet.com>] + + *) mod_proxy_fcgi: Remove proxy:balancer:// prefix from SCRIPT_FILENAME + passed to fastcgi backends. [Eric Covener] + + *) core: Configuration files with long lines and continuation characters + are not read properly. PR 55910. [Manuel Mausz <manuel-as mausz.at>] + + *) mod_include: the 'env' function was incorrectly handled as 'getenv' if the + leading 'e' was written in upper case in <!--#if expr="..." --> + statements. [Christophe Jaillet] + + *) split-logfile: Fix perl error: 'Can't use string ("example.org:80") + as a symbol ref while "strict refs"'. PR 56329. + [Holger Mauermann <mauermann gmail.com>] + + *) mod_proxy: Prevent ProxyPassReverse from doing a substitution when + the URL parameter interpolates to an empty string. PR 56603. + [<ajprout hotmail.com>] + + *) core: Fix -D[efined] or <Define>[d] variables lifetime across restarts. + PR 57328. [Armin Abfalterer <a.abfalterer gmail.com>, Yann Ylavic]. + + *) mod_proxy: Preserve original request headers even if they differ + from the ones to be forwarded to the backend. PR 45387. + [Yann Ylavic] + + *) mod_ssl: dump SSL IO/state for the write side of the connection(s), + like reads (level TRACE4). [Yann Ylavic] + + *) mod_proxy_fcgi: Ignore body data from backend for 304 responses. PR 57198. + [Jan Kaluza] + + *) mod_ssl: Do not crash when looking up SSL related variables during + expression evaluation on non SSL connections. PR 57070 [Ruediger Pluem] + + *) mod_proxy_ajp: Fix handling of the default port (8009) in the + ProxyPass and <Proxy> configurations. PR 57259. [Yann Ylavic] + + *) mpm_event: Avoid a possible use after free when notifying the end of + connection during lingering close. PR 57268. [Eric Covener, Yann Ylavic] + + *) mod_ssl: Fix recognition of OCSP stapling responses that are encoded + improperly or too large. [Jeff Trawick] + + *) core: Add ap_log_data(), ap_log_rdata(), etc. for logging buffers. + [Jeff Trawick] + + *) mod_proxy_fcgi, mod_authnz_fcgi: stop reading the response and issue an + error when parsing or forwarding the response fails. [Yann Ylavic] + + *) mod_ssl: Fix a memory leak in case of graceful restarts with OpenSSL >= 0.9.8e + PR 53435 [tadanori <tadanori2007 yahoo.com>, Sebastian Wiedenroth <wiedi frubar.net>] + + *) mod_proxy_connect: Don't issue AH02447 on sockets hangups, let the read + determine whether it is a normal close or a real error. PR 57168. [Yann + Ylavic] + + *) mod_proxy_wstunnel: abort backend connection on polling error to avoid + further processing. [Yann Ylavic] + + *) core: Support custom ErrorDocuments for HTTP 501 and 414 status codes. + PR 57167 [Edward Lu <Chaosed0 gmail.com>] + + *) mod_proxy_connect: Fix ProxyRemote to https:// backends on EBCDIC + systems. PR 57092 [Edward Lu <Chaosed0 gmail.com>] + + *) mod_cache: Avoid a 304 response to an unconditional request when an AH00752 + CacheLock error occurs during cache revalidation. [Eric Covener] + + *) mod_ssl: Move OCSP stapling information from a per-certificate store to + a per-server hash. PR 54357, PR 56919. [Alex Bligh <alex alex.org.uk>, + Yann Ylavic, Kaspar Brand] + + *) mod_cache_socache: Change average object size hint from 32 bytes to + 2048 bytes. [Rainer Jung] + + *) mod_cache_socache: Add cache status to server-status. [Rainer Jung] + + *) event: Fix worker-listener deadlock in graceful restart. + PR 56960. + + *) Concat strings at compile time when possible. PR 53741. + + *) mod_substitute: Restrict configuration in .htaccess to + FileInfo as documented. [Rainer Jung] + + *) mod_substitute: Make maximum line length configurable. [Rainer Jung] + + *) mod_substitute: Fix line length limitation in case of regexp plus flatten. + [Rainer Jung] + + *) mod_proxy: Truncated character worker names are no longer fatal + errors. PR53218. [Jim Jagielski] + + *) mod_dav: Set r->status_line in dav_error_response. PR 55426. + + *) mod_proxy_http, mod_cache: Avoid (unlikely) accesses to freed memory. + [Yann Ylavic, Christophe Jaillet] + + *) http_protocol: fix logic in ap_method_list_(add|remove) in order: + - to correctly reset bits + - not to modify the 'method_mask' bitfield unnecessarily + [Christophe Jaillet] + + *) mod_slotmem_shm: Increase log level for some originally debug messages. + [Jim Jagielski] + + *) mod_ldap: In 2.4.10, some LDAP searches or comparisons might be done with + the wrong credentials when a backend connection is reused. + [Eric Covener] + + *) mod_macro: Add missing APLOGNO for some Warning log messages. + [Christophe Jaillet] + + *) mod_cache: Avoid sending 304 responses during failed revalidations + PR56881. [Eric Covener] + + *) mod_status: Honor client IP address using mod_remoteip. PR 55886. + [Jim Jagielski] + + *) cmake-based build for Windows: Fix incompatibility with cmake 2.8.12 + and later. PR 56615. [Chuck Liu <cliu81 gmail.com>, Jeff Trawick] + + *) mod_ratelimit: Drop severity of AH01455 and AH01457 (ap_pass_brigade + failed) messages from ERROR to TRACE1. Other filters do not bother + re-reporting failures from lower level filters. PR56832. [Eric Covener] + + *) core: Avoid useless warning message when parsing a section guarded by + <IfDefine foo> if $(foo) is used within the section. + PR 56503 [Christophe Jaillet] + + *) mod_proxy_fcgi: Fix faulty logging of large amounts of stderr from the + application. PR 56858. [Manuel Mausz <manuel-asf mausz.at>] + + *) mod_proxy_http: Proxy responses with error status and + "ProxyErrorOverride On" hang until proxy timeout. + PR53420 [Rainer Jung] + + *) mod_log_config: Allow three character log formats to be registered. For + backwards compatibility, the first character of a three-character format + must be the '^' (caret) character. [Eric Covener] + + *) mod_lua: Don't quote Expires and Path values. PR 56734. + [Keith Mashinter, <kmashint yahoo com>] + + *) mod_authz_core: Allow <AuthzProviderAlias>'es to be seen from auth + stanzas under virtual hosts. PR 56870. [Eric Covener] + +Changes with Apache 2.4.10 + + *) SECURITY: CVE-2014-0117 (cve.mitre.org) + mod_proxy: Fix crash in Connection header handling which allowed a denial + of service attack against a reverse proxy with a threaded MPM. + [Ben Reser] + + *) SECURITY: CVE-2014-3523 (cve.mitre.org) + Fix a memory consumption denial of service in the WinNT MPM, used in all + Windows installations. Workaround: AcceptFilter <protocol> {none|connect} + [Jeff Trawick] + + *) SECURITY: CVE-2014-0226 (cve.mitre.org) + Fix a race condition in scoreboard handling, which could lead to + a heap buffer overflow. [Joe Orton, Eric Covener] + + *) SECURITY: CVE-2014-0118 (cve.mitre.org) + mod_deflate: The DEFLATE input filter (inflates request bodies) now + limits the length and compression ratio of inflated request bodies to + avoid denial of service via highly compressed bodies. See directives + DeflateInflateLimitRequestBody, DeflateInflateRatioLimit, + and DeflateInflateRatioBurst. [Yann Ylavic, Eric Covener] + + *) SECURITY: CVE-2014-0231 (cve.mitre.org) + mod_cgid: Fix a denial of service against CGI scripts that do + not consume stdin that could lead to lingering HTTPD child processes + filling up the scoreboard and eventually hanging the server. By + default, the client I/O timeout (Timeout directive) now applies to + communication with scripts. The CGIDScriptTimeout directive can be + used to set a different timeout for communication with scripts. + [Rainer Jung, Eric Covener, Yann Ylavic] + + *) mod_ssl: Extend the scope of SSLSessionCacheTimeout to sessions + resumed by TLS session resumption (RFC 5077). [Rainer Jung] + + *) mod_deflate: Don't fail when flushing inflated data to the user-agent + and that coincides with the end of stream ("Zlib error flushing inflate + buffer"). PR 56196. [Christoph Fausak <christoph fausak glueckkanja.com>] + + *) mod_proxy_ajp: Forward local IP address as a custom request attribute + like we already do for the remote port. [Rainer Jung] + + *) core: Include any error notes set by modules in the canned error + response for 403 errors. [Jeff Trawick] + + *) mod_ssl: Set an error note for requests rejected due to + SSLStrictSNIVHostCheck. [Jeff Trawick] + + *) mod_ssl: Fix issue with redirects to error documents when handling + SNI errors. [Jeff Trawick] + + *) mod_ssl: Fix tmp DH parameter leak, adjust selection to prefer + larger keys and support up to 8192-bit keys. [Ruediger Pluem, + Joe Orton] + + *) mod_dav: Fix improper encoding in PROPFIND responses. PR 56480. + [Ben Reser] + + *) WinNT MPM: Improve error handling for termination events in child. + [Jeff Trawick] + + *) mod_proxy: When ping/pong is configured for a worker, don't send or + forward "100 Continue" (interim) response to the client if it does + not expect one. [Yann Ylavic] + + *) mod_ldap: Be more conservative with the last-used time for + LDAPConnectionPoolTTL. PR54587 [Eric Covener] + + *) mod_ldap: LDAP connections used for authn were not respecting + LDAPConnectionPoolTTL. PR54587 [Eric Covener] + + *) mod_proxy_fcgi: Fix occasional high CPU when handling request bodies. + [Jeff Trawick] + + *) event MPM: Fix possible crashes (third-party modules accessing c->sbh) + or occasional missed mod_status updates under load. PR 56639. + [Edward Lu <Chaosed0 gmail com>] + + *) mod_authnz_ldap: Support primitive LDAP servers do not accept + filters, such as "SDBM-backed LDAP" on z/OS, by allowing a special + filter "none" to be specified in AuthLDAPURL. [Eric Covener] + + *) mod_deflate: Fix inflation of files larger than 4GB. PR 56062. + [Lukas Bezdicka <social v3.sk>] + + *) mod_deflate: Handle Zlib header and validation bytes received in multiple + chunks. PR 46146. [Yann Ylavic] + + *) mod_proxy: Allow reverse-proxy to be set via explicit handler. + [ryo takatsuki <ryotakatsuki gmail com>] + + *) ab: support custom HTTP method with -m argument. PR 56604. + [Roman Jurkov <winfinit gmail.com>] + + *) mod_proxy_balancer: Correctly encode user provided data in management + interface. PR 56532 [Maksymilian, <max cert.cx>] + + *) mod_proxy: Don't limit the size of the connectable Unix Domain Socket + paths. [Graham Dumpleton, Christophe Jaillet, Yann Ylavic] + + *) mod_proxy_fcgi: Support iobuffersize parameter. [Jeff Trawick] + + *) event: Send the SSL close notify alert when the KeepAliveTimeout + expires. PR54998. [Yann Ylavic] + + *) mod_ssl: Ensure that the SSL close notify alert is flushed to the client. + PR54998. [Tim Kosse <tim.kosse filezilla-project.org>, Yann Ylavic] + + *) mod_proxy: Shutdown (eg. SSL close notify) the backend connection before + closing. [Yann Ylavic] + + *) mod_auth_form: Add a debug message when the fields on a form are not + recognised. [Graham Leggett] + + *) mod_cache: Preserve non-cacheable headers forwarded from an origin 304 + response. PR 55547. [Yann Ylavic] + + *) mod_proxy_wstunnel: Fix the use of SSL connections with the "wss:" + scheme. PR55320. [Alex Liu <alex.leo.ca gmail.com>] + + *) mod_socache_shmcb: Correct counting of expirations for status display. + Expirations happening during retrieval were not counted. [Rainer Jung] + + *) mod_cache: Retry unconditional request with the full URL (including the + query-string) when the origin server's 304 response does not match the + conditions used to revalidate the stale entry. [Yann Ylavic]. + + *) mod_alias: Stop setting CONTEXT_PREFIX and CONTEXT_DOCUMENT environment + variables as a result of AliasMatch. [Eric Covener] + + *) mod_cache: Don't add cached/revalidated entity headers to a 304 response. + PR 55547. [Yann Ylavic] + + *) mod_proxy_scgi: Support Unix sockets. ap_proxy_port_of_scheme(): + Support default SCGI port (4000). [Jeff Trawick] + + *) mod_cache: Fix AH00784 errors on Windows when the the CacheLock directive + is enabled. [Eric Covener] + + *) mod_expires: don't add Expires header to error responses (4xx/5xx), + be they generated or forwarded. PR 55669. [Yann Ylavic] + + *) mod_proxy_fcgi: Don't segfault when failing to connect to the backend. + (regression in 2.4.9 release) [Jeff Trawick] + + *) mod_authn_socache: Fix crash at startup in certain configurations. + PR 56371. (regression in 2.4.7) [Jan Kaluza] + + *) mod_ssl: restore argument structure for "exec"-type SSLPassPhraseDialog + programs to the form used in releases up to 2.4.7, and emulate + a backwards-compatible behavior for existing setups. [Kaspar Brand] + + *) mod_ssl: Add SSLOCSPUseRequestNonce directive to control whether or not + OCSP requests should use a nonce to be checked against the responder's + one. PR 56233. [Yann Ylavic, Kaspar Brand] + + *) mod_ssl: "SSLEngine off" will now override a Listen-based default + and does disable mod_ssl for the vhost. [Joe Orton] + + *) mod_lua: Enforce the max post size allowed via r:parsebody() + [Daniel Gruno] + + *) mod_lua: Use binary comparison to find boundaries for multipart + objects, as to not terminate our search prematurely when hitting + a NULL byte. [Daniel Gruno] + + *) mod_ssl: add workaround for SSLCertificateFile when using OpenSSL + versions before 0.9.8h and not specifying an SSLCertificateChainFile + (regression introduced with 2.4.8). PR 56410. [Kaspar Brand] + + *) mod_ssl: bring SNI behavior into better conformance with RFC 6066: + no longer send warning-level unrecognized_name(112) alerts, + and limit startup warnings to cases where an OpenSSL version + without TLS extension support is used. PR 56241. [Kaspar Brand] + + *) mod_proxy_html: Avoid some possible memory access violation in case of + specially crafted files, when the ProxyHTMLMeta directive is turned on. + Follow up of PR 56287 [Christophe Jaillet] + + *) mod_auth_form: Make sure the optional functions are loaded even when + the AuthFormProvider isn't specified. [Graham Leggett] + + *) mod_ssl: avoid processing bogus SSLCertificateKeyFile values + (and logging garbled file names). PR 56306. [Kaspar Brand] + + *) mod_ssl: fix merging of global and vhost-level settings with the + SSLCertificateFile, SSLCertificateKeyFile, and SSLOpenSSLConfCmd + directives. PR 56353. [Kaspar Brand] + + *) mod_headers: Allow the "value" parameter of Header and RequestHeader to + contain an ap_expr expression if prefixed with "expr=". [Eric Covener] + + *) rotatelogs: Avoid creation of zombie processes when -p is used on + Unix platforms. [Joe Orton] + + *) mod_authnz_fcgi: New module to enable FastCGI authorizer + applications to authenticate and/or authorize clients. + [Jeff Trawick] + + *) mod_proxy: Do not try to parse the regular expressions passed by + ProxyPassMatch as URL as they do not follow their syntax. + PR 56074. [Ruediger Pluem] + + *) mod_reqtimeout: Resolve unexpected timeouts on keepalive requests + under the Event MPM. PR56216. [Frank Meier <frank meier ergon ch>] + + *) mod_proxy_fcgi: Fix sending of response without some HTTP headers + that might be set by filters. PR 55558. [Jim Riggs <jim riggs.me>] + + *) mod_proxy_html: Do not delete the wrong data from HTML code when a + "http-equiv" meta tag specifies a Content-Type behind any other + "http-equiv" meta tag. PR 56287 [Micha Lenk <micha lenk info>] + + *) mod_proxy: Don't reuse a SSL backend connection whose requested SNI + differs. PR 55782. [Yann Ylavic] + + *) Add suspend_connection and resume_connection hooks to notify modules + when the thread/connection relationship changes. (Should be implemented + for any third-party async MPMs.) [Jeff Trawick] + + *) mod_proxy_wstunnel: Don't issue AH02447 and log a 500 on routine + hangups from websockets origin servers. PR 56299 + [Yann Ylavic, Edward Lu <Chaosed0 gmail com>, Eric Covener] + + *) mod_proxy_wstunnel: Don't pool backend websockets connections, + because we need to handshake every time. PR 55890. + [Eric Covener] + + *) mod_lua: Redesign how request record table access behaves, + in order to utilize the request record from within these tables. + [Daniel Gruno] + + *) mod_lua: Add r:wspeek for peeking at WebSocket frames. [Daniel Gruno] + + *) mod_lua: Log an error when the initial parsing of a Lua file fails. + [Daniel Gruno, Felipe Daragon <filipe syhunt com>] + + *) mod_lua: Reformat and escape script error output. + [Daniel Gruno, Felipe Daragon <filipe syhunt com>] + + *) mod_lua: URL-escape cookie keys/values to prevent tainted cookie data + from causing response splitting. + [Daniel Gruno, Felipe Daragon <filipe syhunt com>] + + *) mod_lua: Disallow newlines in table values inside the request_rec, + to prevent HTTP Response Splitting via tainted headers. + [Daniel Gruno, Felipe Daragon <filipe syhunt com>] + + *) mod_lua: Remove the non-working early/late arguments for + LuaHookCheckUserID. [Daniel Gruno] + + *) mod_lua: Change IVM storage to use shm [Daniel Gruno] + + *) mod_lua: More verbose error logging when a handler function cannot be + found. [Daniel Gruno] + +Changes with Apache 2.4.9 + + *) mod_ssl: Work around a bug in some older versions of OpenSSL that + would cause a crash in SSL_get_certificate for servers where the + certificate hadn't been sent. [Stephen Henson] + + *) mod_lua: Add a fixups hook that checks if the original request is intended + for LuaMapHandler. This fixes a bug where FallbackResource invalidates the + LuaMapHandler directive in certain cases by changing the URI before the map + handler code executes [Daniel Gruno, Daniel Ferradal <dferradal gmail com>]. + +Changes with Apache 2.4.8 (not released) + + *) SECURITY: CVE-2014-0098 (cve.mitre.org) + Clean up cookie logging with fewer redundant string parsing passes. + Log only cookies with a value assignment. Prevents segfaults when + logging truncated cookies. + [William Rowe, Ruediger Pluem, Jim Jagielski] + + *) SECURITY: CVE-2013-6438 (cve.mitre.org) + mod_dav: Keep track of length of cdata properly when removing + leading spaces. Eliminates a potential denial of service from + specifically crafted DAV WRITE requests + [Amin Tora <Amin.Tora neustar.biz>] + + *) core: Support named groups and backreferences within the LocationMatch, + DirectoryMatch, FilesMatch and ProxyMatch directives. (Requires + non-ancient PCRE library) [Graham Leggett] + + *) core: draft-ietf-httpbis-p1-messaging-23 corrections regarding + TE/CL conflicts. [Yann Ylavic, Jim Jagielski] + + *) core: Detect incomplete request and response bodies, log an error and + forward it to the underlying filters. PR 55475 [Yann Ylavic] + + *) mod_dir: Add DirectoryCheckHandler to allow a 2.2-like behavior, skipping + execution when a handler is already set. PR53929. [Eric Covener] + + *) mod_ssl: Do not perform SNI / Host header comparison in case of a + forward proxy request. [Ruediger Pluem] + + *) mod_ssl: Remove the hardcoded algorithm-type dependency for the + SSLCertificateFile and SSLCertificateKeyFile directives, to enable + future algorithm agility, and deprecate the SSLCertificateChainFile + directive (obsoleted by SSLCertificateFile). [Kaspar Brand] + + *) mod_rewrite: Add RewriteOptions InheritDown, InheritDownBefore, + and IgnoreInherit to allow RewriteRules to be pushed from parent scopes + to child scopes without explicitly configuring each child scope. + PR56153. [Edward Lu <Chaosed0 gmail com>] + + *) prefork: Fix long delays when doing a graceful restart. + PR 54852 [Jim Jagielski, Arkadiusz Miskiewicz <arekm maven pl>] + + *) FreeBSD: Disable IPv4-mapped listening sockets by default for versions + 5+ instead of just for FreeBSD 5. PR 53824. [Jeff Trawick] + + *) mod_proxy_wstunnel: Avoid busy loop on client errors, drop message + IDs 02445, 02446, and 02448 to TRACE1 from DEBUG. PR 56145. + [Joffroy Christen <joffroy.christen solvaxis com>, Eric Covener] + + *) mod_remoteip: Correct the trusted proxy match test. PR 54651. + [Yoshinori Ehara <yoshinori ehara gmail com>, Eugene L <eugenel amazon com>] + + *) mod_proxy_fcgi: Fix error message when an unexpected protocol version + number is received from the application. PR 56110. [Jeff Trawick] + + *) mod_remoteip: Use the correct IP addresses to populate the proxy_ips field. + PR 55972. [Mike Rumph] + + *) mod_lua: Update r:setcookie() to accept a table of options and add domain, + path and httponly to the list of options available to set. + PR 56128 [Edward Lu <Chaosed0 gmail com>, Daniel Gruno] + + *) mod_lua: Fix r:setcookie() to add, rather than replace, + the Set-Cookie header. PR56105 + [Kevin J Walters <kjw ms com>, Edward Lu <Chaosed0 gmail com>] + + *) mod_lua: Allow for database results to be returned as a hash with + row-name/value pairs instead of just row-number/value. [Daniel Gruno] + + *) mod_rewrite: Add %{CONN_REMOTE_ADDR} as the non-useragent counterpart to + %{REMOTE_ADDR}. PR 56094. [Edward Lu <Chaosed0 gmail com>] + + *) WinNT MPM: If ap_run_pre_connection() fails or sets c->aborted, don't + save the socket for reuse by the next worker as if it were an + APR_SO_DISCONNECTED socket. Restores 2.2 behavior. [Eric Covener] + + *) mod_dir: Don't search for a DirectoryIndex or DirectorySlash on a URL + that was just rewritten by mod_rewrite. PR53929. [Eric Covener] + + *) mod_session: When we have a session we were unable to decode, + behave as if there was no session at all. [Thomas Eckert + <thomas.r.w.eckert gmail com>] + + *) mod_session: Fix problems interpreting the SessionInclude and + SessionExclude configuration. PR 56038. [Erik Pearson + <erik adaptations.com>] + + *) mod_authn_core: Allow <AuthnProviderAlias>'es to be seen from auth + stanzas under virtual hosts. PR 55622. [Eric Covener] + + *) mod_proxy_fcgi: Use apr_socket_timeout_get instead of hard-coded + 30 seconds timeout. [Jan Kaluza] + + *) build: only search for modules (config*.m4) in known subdirectories, see + build/config-stubs. [Stefan Fritsch] + + *) mod_cache_disk: Fix potential hangs on Windows when using mod_cache_disk. + PR 55833. [Eric Covener] + + *) mod_ssl: Add support for OpenSSL configuration commands by introducing + the SSLOpenSSLConfCmd directive. [Stephen Henson, Kaspar Brand] + + *) mod_proxy: Remove (never documented) <Proxy ~ wildcard-url> syntax which + is equivalent to <ProxyMatch wildcard-url>. [Christophe Jaillet] + + *) mod_authz_user, mod_authz_host, mod_authz_groupfile, mod_authz_dbm, + mod_authz_dbd, mod_authnz_ldap: Support the expression parser within the + require directives. [Graham Leggett] + + *) mod_proxy_http: Core dumped under high load. PR 50335. + [Jan Kaluza <jkaluza redhat.com>] + + *) mod_socache_shmcb.c: Remove arbitrary restriction on shared memory size + previously limited to 64MB. [Jens Låås <jelaas gmail.com>] + + *) mod_lua: Use binary copy when dealing with uploads through r:parsebody() + to prevent truncating files. [Daniel Gruno] + +Changes with Apache 2.4.7 + + *) SECURITY: CVE-2013-4352 (cve.mitre.org) + mod_cache: Fix a NULL pointer deference which allowed untrusted + origin servers to crash mod_cache in a forward proxy + configuration. [Graham Leggett] + + *) APR 1.5.0 or later is now required for the event MPM. + + *) slotmem_shm: Error detection. [Jim Jagielski] + + *) event: Use skiplist data structure. [Jim Jagielski] + + *) event: Fail at startup with message AP02405 if the APR atomic + implementation is not compatible with the MPM. [Jim Jagielski] + + *) mpm_unix: Add ap_mpm_podx_* implementation to avoid code duplication + and align w/ trunk. [Jim Jagielski] + + *) Fix potential rejection of valid MaxMemFree and ThreadStackSize + directives. [Mike Rumph <mike.rumph oracle.com>] + + *) mod_proxy_fcgi: Remove 64K limit on encoded length of all envvars. + An individual envvar with an encoded length of more than 16K will be + omitted. [Jeff Trawick] + + *) mod_proxy_fcgi: Handle reading protocol data that is split between + packets. [Jeff Trawick] + + *) mod_ssl: Improve handling of ephemeral DH and ECDH keys by + allowing custom parameters to be configured via SSLCertificateFile, + and by adding standardized DH parameters for 1024/2048/3072/4096 bits. + Unless custom parameters are configured, the standardized parameters + are applied based on the certificate's RSA/DSA key size. [Kaspar Brand] + + *) mod_ssl, configure: Require OpenSSL 0.9.8a or later. [Kaspar Brand] + + *) mod_ssl: drop support for export-grade ciphers with ephemeral RSA + keys, and unconditionally disable aNULL, eNULL and EXP ciphers + (not overridable via SSLCipherSuite). [Kaspar Brand] + + *) mod_proxy: Added support for unix domain sockets as the + backend server endpoint. This also introduces an unintended + incompatibility for third party modules using the mod_proxy + proxy_worker_shared structure, especially for balancer lbmethod + modules. [Jim Jagielski, Blaise Tarr <blaise tarr gmail com>] + + *) Add experimental cmake-based build system for Windows. [Jeff Trawick, + Tom Donovan] + + *) event MPM: Fix possible crashes (third party modules accessing c->sbh) + or occasional missed mod_status updates for some keepalive requests + under load. [Eric Covener] + + *) mod_authn_socache: Support optional initialization arguments for + socache providers. [Chris Darroch] + + *) mod_session: Reset the max-age on session save. PR 47476. [Alexey + Varlamov <alexey.v.varlamov gmail com>] + + *) mod_session: After parsing the value of the header specified by the + SessionHeader directive, remove the value from the response. PR 55279. + [Graham Leggett] + + *) mod_headers: Allow for format specifiers in the substitution string + when using Header edit. [Daniel Ruggeri] + + *) mod_dav: dav_resource->uri is treated as unencoded. This was an + unnecessary ABI changed introduced in 2.4.6. PR 55397. + + *) mod_dav: Don't require lock tokens for COPY source. PR 55306. + + *) core: Don't truncate output when sending is interrupted by a signal, + such as from an exiting CGI process. PR 55643. [Jeff Trawick] + + *) WinNT MPM: Exit the child if the parent process crashes or is terminated. + [Oracle Corporation] + + *) Windows: Correct failure to discard stderr in some error log + configurations. (Error message AH00093) [Jeff Trawick] + + *) mod_session_crypto: Allow using exec: calls to obtain session + encryption key. [Daniel Ruggeri] + + *) core: Add missing Reason-Phrase in HTTP response headers. + PR 54946. [Rainer Jung] + + *) mod_rewrite: Make rewrite websocket-aware to allow proxying. + PR 55598. [Chris Harris <chris.harris kitware com>] + + *) mod_ldap: When looking up sub-groups, use an implicit objectClass=* + instead of an explicit cn=* filter. [David Hawes <dhawes vt.edu>] + + *) ab: Add wait time, fix processing time, and output write errors only if + they occurred. [Christophe Jaillet] + + *) worker MPM: Don't forcibly kill worker threads if the child process is + exiting gracefully. [Oracle Corporation] + + *) core: apachectl -S prints wildcard name-based virtual hosts twice. + PR54948 [Eric Covener] + + *) mod_auth_basic: Add AuthBasicUseDigestAlgorithm directive to + allow migration of passwords from digest to basic authentication. + [Chris Darroch] + + *) ab: Add a new -l parameter in order not to check the length of the responses. + This can be useful with dynamic pages. + PR9945, PR27888, PR42040 [<ccikrs1 cranbrook edu>] + + *) Suppress formatting of startup messages written to the console when + ErrorLogFormat is used. [Jeff Trawick] + + *) mod_auth_digest: Be more specific when the realm mismatches because the + realm has not been specified. [Graham Leggett] + + *) mod_proxy: Add a note in the balancer manager stating whether changes + will or will not be persisted and whether settings are inherited. + [Daniel Ruggeri, Jim Jagielski] + + *) core: Add util_fcgi.h and associated definitions and support + routines for FastCGI, based largely on mod_proxy_fcgi. + [Jeff Trawick] + + *) mod_headers: Add 'Header note header-name note-name' for copying a response + headers value into a note. [Eric Covener] + + *) mod_headers: Add 'setifempty' command to Header and RequestHeader. + [Eric Covener] + + *) mod_logio: new format-specifier %S (sum) which is the sum of received + and sent byte counts. + PR54015 [Christophe Jaillet] + + *) mod_deflate: Improve error detection when decompressing request bodies + with trailing garbage: handle case where trailing bytes are in + the same bucket. [Rainer Jung] + + *) mod_authz_groupfile, mod_authz_user: Reduce severity of AH01671 and AH01663 + from ERROR to DEBUG, since these modules do not know what mod_authz_core + is doing with their AUTHZ_DENIED return value. [Eric Covener] + + *) mod_ldap: add TRACE5 for LDAP retries. [Eric Covener] + + *) mod_ldap: retry on an LDAP timeout during authn. [Eric Covener] + + *) mod_ldap: Change "LDAPReferrals off" to actually set the underlying LDAP + SDK option to OFF, and introduce "LDAPReferrals default" to take the SDK + default, sans rebind authentication callback. + [Jan Kaluza <kaluze AT redhat.com>] + + *) core: Log a message at TRACE1 when the client aborts a connection. + [Eric Covener] + + *) WinNT MPM: Don't crash during child process initialization if the + Listen protocol is unrecognized. [Jeff Trawick] + + *) modules: Fix some compiler warnings. [Guenter Knauf] + + *) Sync 2.4 and trunk + - Avoid some memory allocation and work when TRACE1 is not activated + - fix typo in include guard + - indent + - No need to lower the string before removing the path, it is just + a waste of time... + - Save a few cycles + [Christophe Jaillet <christophe.jaillet wanadoo.fr>] + + *) mod_filter: Add "change=no" as a proto-flag to FilterProtocol + to remove a providers initial flags set at registration time. + [Eric Covener] + + *) core, mod_ssl: Enable the ability for a module to reverse the sense of + a poll event from a read to a write or vice versa. This is a step on + the way to allow mod_ssl taking full advantage of the event MPM. + [Graham Leggett] + + *) Makefile.win: Install proper pcre DLL file during debug build install. + PR 55235. [Ben Reser <ben reser org>] + + *) mod_ldap: Fix a potential memory leak or corruption. PR 54936. + [Zhenbo Xu <zhenbo1987 gmail com>] + + *) ab: Fix potential buffer overflows when processing the T and X + command-line options. PR 55360. + [Mike Rumph <mike.rumph oracle.com>] + + *) fcgistarter: Specify SO_REUSEADDR to allow starting a server + with old connections in TIME_WAIT. [Jeff Trawick] + + *) core: Add open_htaccess hook which, in conjunction with dirwalk_stat + and post_perdir_config (introduced in 2.4.5), allows mpm-itk to be + used without patches to httpd core. [Stefan Fritsch] + + *) support/htdbm: fix processing of -t command line switch. Regression + introduced in 2.4.4 + PR 55264 [Jo Rhett <jrhett netconsonance com>] + + *) mod_lua: add websocket support via r:wsupgrade, r:wswrite, r:wsread + and r:wsping. [Daniel Gruno] + + *) mod_lua: add support for writing/reading cookies via r:getcookie and + r:setcookie. [Daniel Gruno] + + *) mod_lua: If the first yield() of a LuaOutputFilter returns a string, it should + be prefixed to the response as documented. [Eric Covener] + Note: Not present in 2.4.7 CHANGES + + *) mod_lua: Remove ETAG, Content-Length, and Content-MD5 when a LuaOutputFilter + is configured without mod_filter. [Eric Covener] + Note: Not present in 2.4.7 CHANGES + + *) mod_lua: Register LuaOutputFilter scripts as changing the content and + content-length by default, when run my mod_filter. Previously, + growing or shrinking a response that started with Content-Length set + would require mod_filter and FilterProtocol change=yes. [Eric Covener] + Note: Not present in 2.4.7 CHANGES + + *) mod_lua: Return a 500 error if a LuaHook* script doesn't return a + numeric return code. [Eric Covener] + Note: Not present in 2.4.7 CHANGES + +Changes with Apache 2.4.6 + + *) Revert a broken fix for PR54948 that was applied to 2.4.5 (which was + not released) and found post-2.4.5 tagging. + +Changes with Apache 2.4.5 + + *) SECURITY: CVE-2013-1896 (cve.mitre.org) + mod_dav: Sending a MERGE request against a URI handled by mod_dav_svn with + the source href (sent as part of the request body as XML) pointing to a + URI that is not configured for DAV will trigger a segfault. [Ben Reser + <ben reser.org>] + + *) SECURITY: CVE-2013-2249 (cve.mitre.org) + mod_session_dbd: Make sure that dirty flag is respected when saving + sessions, and ensure the session ID is changed each time the session + changes. This changes the format of the updatesession SQL statement. + Existing configurations must be changed. + [Takashi Sato, Graham Leggett] + + *) mod_auth_basic: Add a generic mechanism to fake basic authentication + using the ap_expr parser. AuthBasicFake allows the administrator to + construct their own username and password for basic authentication based + on their needs. [Graham Leggett] + + *) mpm_event: Check that AsyncRequestWorkerFactor is not negative. PR 54254. + [Jackie Zhang <jackie qq zhang gmail com>] + + *) mod_proxy: Ensure we don't attempt to amend a table we are iterating + through, ensuring that all headers listed by Connection are removed. + [Graham Leggett, Co-Advisor <coad measurement-factory.com>] + + *) mod_proxy_http: Make the proxy-interim-response environment variable + effective by formally overriding origin server behaviour. [Graham + Leggett, Co-Advisor <coad measurement-factory.com>] + + *) mod_proxy: Fix seg-faults when using the global pool on threaded + MPMs [Thomas Eckert <thomas.r.w.eckert gmail.com>, Graham Leggett, + Jim Jagielski] + + *) mod_deflate: Remove assumptions as to when an EOS bucket might arrive. + Gracefully step aside if the body size is zero. [Graham Leggett] + + *) mod_ssl: Fix possible truncation of OCSP responses when reading from the + server. [Joe Orton] + + *) core: Support the SINGLE_LISTEN_UNSERIALIZED_ACCEPT optimization + on Linux kernel versions 3.x and above. PR 55121. [Bradley Heilbrun + <apache heilbrun.org>] + + *) mod_cache_socache: Make sure the CacheSocacheMaxSize directive is merged + correctly. [Jens Låås <jelaas gmail.com>] + + *) rotatelogs: add -n number-of-files option to rotate through a number + of fixed-name logfiles. [Eric Covener] + + *) mod_proxy: Support web-socket tunnels via mod_proxy_wstunnel. + [Jim Jagielski] + + *) mod_cache_socache: Use the name of the socache implementation when performing + a lookup rather than using the raw arguments. [Martin Ksellmann + <martin@ksellmann.de>] + + *) core: Add dirwalk_stat hook. [Jeff Trawick] + + *) core: Add post_perdir_config hook. + [Steinar Gunderson <sgunderson bigfoot.com>] + + *) proxy_util: NULL terminate the right buffer in 'send_http_connect'. + [Christophe Jaillet] + + *) mod_remoteip: close file in error path. [Christophe Jaillet] + + *) core: make the "default" parameter of the "ErrorDocument" option case + insensitive. PR 54419 [Tianyin Xu <tixu cs ucsd edu>] + + *) mod_proxy_html: make the "ProxyHTMLFixups" options case insensitive. + PR 54420 [Tianyin Xu <tixu cs ucsd edu>] + + *) mod_cache: Make option "CacheDisable" in mod_cache case insensitive. + PR 54462 [Tianyin Xu <tixu cs ucsd edu>] + + *) mod_cache: If a 304 response indicates an entity not currently cached, then + the cache MUST disregard the response and repeat the request without the + conditional. [Graham Leggett, Co-Advisor <coad measurement-factory.com>] + + *) mod_cache: Ensure that we don't attempt to replace a cached response + with an older response as per RFC2616 13.12. [Graham Leggett, Co-Advisor + <coad measurement-factory.com>] + + *) core, mod_cache: Ensure RFC2616 compliance in ap_meets_conditions() + with weak validation combined with If-Range and Range headers. Break + out explicit conditional header checks to be useable elsewhere in the + server. Ensure weak validation RFC compliance in the byteranges filter. + Ensure RFC validation compliance when serving cached entities. PR 16142 + [Graham Leggett, Co-Advisor <coad measurement-factory.com>] + + *) core: Add the ability to do explicit matching on weak and strong ETags + as per RFC2616 Section 13.3.3. [Graham Leggett, Co-Advisor + <coad measurement-factory.com>] + + *) mod_cache: Ensure that updated responses to HEAD requests don't get + mistakenly paired with a previously cached body. Ensure that any existing + body is removed when a HEAD request is cached. [Graham Leggett, + Co-Advisor <coad measurement-factory.com>] + + *) mod_cache: Honour Cache-Control: no-store in a request. [Graham Leggett] + + *) mod_cache: Make sure that contradictory entity headers present in a 304 + Not Modified response are caught and cause the entity to be removed. + [Graham Leggett] + + *) mod_cache: Make sure Vary processing handles multivalued Vary headers and + multivalued headers referred to via Vary. [Graham Leggett] + + *) mod_cache: When serving from cache, only the last header of a multivalued + header was taken into account. Fixed. Ensure that Warning headers are + correctly handled as per RFC2616. [Graham Leggett] + + *) mod_cache: Ignore response headers specified by no-cache=header and + private=header as specified by RFC2616 14.9.1 What is Cacheable. Ensure + that these headers are still processed when multiple Cache-Control + headers are present in the response. PR 54706 [Graham Leggett, + Yann Ylavic <ylavic.dev gmail.com>] + + *) mod_cache: Invalidate cached entities in response to RFC2616 Section + 13.10 Invalidation After Updates or Deletions. PR 15868 [Graham + Leggett] + + *) mod_dav: Improve error handling in dav_method_put(), add new + dav_join_error() function. PR 54145. [Ben Reser <ben reser.org>] + + *) mod_dav: Do not fail PROPPATCH when prop namespace is not known. + PR 52559 [Diego Santa Cruz <diego.santaCruz spinetix.com>] + + *) mod_dav: When a PROPPATCH attempts to remove a non-existent dead + property on a resource for which there is no dead property in the same + namespace httpd segfaults. PR 52559 [Diego Santa Cruz + <diego.santaCruz spinetix.com>] + + *) mod_dav: Sending an If or If-Match header with an invalid ETag doesn't + result in a 412 Precondition Failed for a COPY operation. PR54610 + [Timothy Wood <tjw omnigroup.com>] + + *) mod_dav: Make sure that when we prepare an If URL for Etag comparison, + we compare unencoded paths. PR 53910 [Timothy Wood <tjw omnigroup.com>] + + *) mod_deflate: Remove assumptions as to when an EOS bucket might arrive. + Gracefully step aside if the body size is zero. [Graham Leggett] + + *) 'AuthGroupFile' and 'AuthUserFile' do not accept anymore the optional + 'standard' keyword . It was unused and not documented. + PR54463 [Tianyin Xu <tixu cs.ucsd.edu> and Christophe Jaillet] + + *) core: Do not over allocate memory within 'ap_rgetline_core' for + the common case. [Christophe Jaillet] + + *) core: speed up (for common cases) and reduce memory usage of + ap_escape_logitem(). This should save 70-100 bytes in the request + pool for a default config. [Christophe Jaillet] + + *) mod_dav: Ensure URI is correctly uriencoded on return. PR 54611 + [Timothy Wood <tjw omnigroup.com>] + + *) mod_proxy: Reject invalid values for Max-Forwards. [Graham Leggett, + Co-Advisor <coad measurement-factory.com>] + + *) mod_cache: RFC2616 14.9.3 The s-maxage directive also implies the + semantics of the proxy-revalidate directive. [Graham Leggett] + + *) mod_ssl: add support for subjectAltName-based host name checking + in proxy mode (SSLProxyCheckPeerName). PR 54030. [Kaspar Brand] + + *) core: Use the proper macro for HTTP/1.1. [Graham Leggett] + + *) event MPM: Provide error handling for ThreadStackSize. PR 54311 + [Tianyin Xu <tixu cs.ucsd.edu>, Christophe Jaillet] + + *) mod_dav: Do not segfault on PROPFIND with a zero length DBM. + PR 52559 [Diego Santa Cruz <diego.santaCruz spinetix.com>] + + *) core: Improve error message where client's request-line exceeds + LimitRequestLine. PR 54384 [Christophe Jaillet] + + *) mod_macro: New module that provides macros within configuration files. + [Fabien Coelho] + + *) mod_cache_socache: New cache implementation backed by mod_socache + that replaces mod_mem_cache known from httpd 2.2. [Graham + Leggett] + + *) htpasswd: Add -v option to verify a password. [Stefan Fritsch] + + *) mod_proxy: Add BalancerInherit and ProxyPassInherit to control + whether Proxy Balancers and Workers are inherited by vhosts + (default is On). [Jim Jagielski] + + *) mod_authnz_ldap: Allow using exec: calls to obtain LDAP bind + password. [Daniel Ruggeri] + + *) Added balancer parameter failontimeout to allow server admin + to configure an IO timeout as an error in the balancer. + [Daniel Ruggeri] + + *) mod_auth_digest: Fix crashes if shm initialization failed. [Stefan + Fritsch] + + *) htpasswd, htdbm: Fix password generation. PR 54735. [Stefan Fritsch] + + *) core: Add workaround for gcc bug on sparc/64bit. PR 52900. + [Stefan Fritsch] + + *) mod_setenvif: Fix crash in case SetEnvif and SetEnvIfExpr are used + together. PR 54881. [Ruediger Pluem] + + *) htdigest: Fix buffer overflow when reading digest password file + with very long lines. PR 54893. [Rainer Jung] + + *) ap_expr: Add the ability to base64 encode and base64 decode + strings and to generate their SHA1 and MD5 hash. + [Graham Leggett, Stefan Fritsch] + + *) mod_log_config: Fix crash when logging request end time for a failed + request. PR 54828 [Rainer Jung] + + *) mod_ssl: Catch missing, mismatched or encrypted client cert/key pairs + with SSLProxyMachineCertificateFile/Path directives. PR 52212, PR 54698. + [Keith Burdis <keith burdis.org>, Joe Orton, Kaspar Brand] + + *) mod_ssl: Quiet FIPS mode weak keys disabled and FIPS not selected emits + in the error log to debug level. [William Rowe] + + *) mod_cache_disk: CacheMinFileSize and CacheMaxFileSize were always + using compiled in defaults of 1000000/1 respectively. [Eric Covener] + + *) mod_lbmethod_heartbeat, mod_heartmonitor: Respect DefaultRuntimeDir/ + DEFAULT_REL_RUNTIMEDIR for the heartbeat storage file. [Jeff Trawick] + + *) mod_include: Use new ap_expr for 'elif', like 'if', + if legacy parser is not specified. PR 54548 [Tom Donovan] + + *) mod_lua: Add some new functions: r:htpassword(), r:mkdir(), r:mkrdir(), + r:rmdir(), r:touch(), r:get_direntries(), r.date_parse_rfc(). + [Guenter Knauf] + + *) mod_lua: Add multipart form data handling. [Daniel Gruno] + + *) mod_lua: If a LuaMapHandler doesn't return any value, log a warning + and treat it as apache2.OK. [Eric Covener] + + *) mod_lua: Add bindings for apr_dbd/mod_dbd database access + [Daniel Gruno] + + *) mod_lua: Add LuaInputFilter/LuaOutputFilter for creating content + filters in Lua [Daniel Gruno] + + *) mod_lua: Allow scripts handled by the lua-script handler to return + a status code to the client (such as a 302 or a 500) [Daniel Gruno] + + *) mod_lua: Decline handling 'lua-script' if the file doesn't exist, + rather than throwing an internal server error. [Daniel Gruno] + + *) mod_lua: Add functions r:flush and r:sendfile as well as additional + request information to the request_rec structure. [Daniel Gruno] + + *) mod_lua: Add a server scope for Lua states, which creates a pool of + states with manageable minimum and maximum size. [Daniel Gruno] + + *) mod_lua: Add new directive, LuaMapHandler, for dynamically mapping + URIs to Lua scripts and functions using regular expressions. + [Daniel Gruno] + + *) mod_lua: Add new directive LuaCodeCache for controlling in-memory + caching of lua scripts. [Daniel Gruno] + +Changes with Apache 2.4.4 + + *) SECURITY: CVE-2012-3499 (cve.mitre.org) + Various XSS flaws due to unescaped hostnames and URIs HTML output in + mod_info, mod_status, mod_imagemap, mod_ldap, and mod_proxy_ftp. + [Jim Jagielski, Stefan Fritsch, Niels Heinen <heinenn google com>] + + *) SECURITY: CVE-2012-4558 (cve.mitre.org) + XSS in mod_proxy_balancer manager interface. [Jim Jagielski, + Niels Heinen <heinenn google com>] + + *) mod_dir: Add support for the value 'disabled' in FallbackResource. + [Vincent Deffontaines] + + *) mod_proxy_connect: Don't keepalive the connection to the client if the + backend closes the connection. PR 54474. [Pavel Mateja <pavel netsafe cz>] + + *) mod_lua: Add bindings for mod_dbd/apr_dbd database access. + [Daniel Gruno] + + *) mod_proxy: Allow for persistence of local changes made via the + balancer-manager between graceful/normal restarts and power + cycles. [Jim Jagielski] + + *) mod_proxy: Fix startup crash with mis-defined balancers. + PR 52402. [Jim Jagielski] + + *) --with-module: Fix failure to integrate them into some existing + module directories. PR 40097. [Jeff Trawick] + + *) htcacheclean: Fix potential segfault if "-p" is omitted. [Joe Orton] + + *) mod_proxy_http: Honour special value 0 (unlimited) of LimitRequestBody + PR 54435. [Pavel Mateja <pavel netsafe.cz>] + + *) mod_proxy_ajp: Support unknown HTTP methods. PR 54416. + [Rainer Jung] + + *) htcacheclean: Fix list options "-a" and "-A". + [Rainer Jung] + + *) mod_slotmem_shm: Fix mistaken reset of num_free for restored shm. + [Jim Jagielski] + + *) mod_proxy: non-existence of byrequests is not an immediate error. + [Jim Jagielski] + + *) mod_proxy_balancer: Improve output of balancer-manager (re: Drn, + Dis, Ign, Stby). PR 52478 [Danijel <dt-ng rbfh de>] + + *) configure: Fix processing of --disable-FEATURE for various features. + [Jeff Trawick] + + *) mod_dialup/mod_http: Prevent a crash in mod_dialup in case of internal + redirect. PR 52230. + + *) various modules, rotatelogs: Replace use of apr_file_write() with + apr_file_write_full() to prevent incomplete writes. PR 53131. + [Nicolas Viennot <apache viennot biz>, Stefan Fritsch] + + *) ab: Support socket timeout (-s timeout). + [Guido Serra <zeph fsfe org>] + + *) httxt2dbm: Correct length computation for the 'value' stored in the + DBM file. PR 47650 [jon buckybox com] + + *) core: Be more correct about rejecting directives that cannot work in <If> + sections. [Stefan Fritsch] + + *) core: Fix directives like LogLevel that need to know if they are invoked + at virtual host context or in Directory/Files/Location/If sections to + work properly in If sections that are not in a Directory/Files/Location. + [Stefan Fritsch] + + *) mod_xml2enc: Fix problems with charset conversion altering the + Content-Length. [Micha Lenk <micha lenk info>] + + *) ap_expr: Add req_novary function that allows HTTP header lookups + without adding the name to the Vary header. [Stefan Fritsch] + + *) mod_slotmem_*: Add in new fgrab() function which forces a grab and + slot allocation on a specified slot. Allow for clearing of inuse + array. [Jim Jagielski] + + *) mod_proxy_ftp: Fix segfaults on IPv4 requests to hosts with DNS + AAAA records. PR 40841. [Andrew Rucker Jones <arjones simultan + dyndns org>, <ast domdv de>, Jim Jagielski] + + *) mod_auth_form: Make sure that get_notes_auth() sets the user as does + get_form_auth() and get_session_auth(). Makes sure that REMOTE_USER + does not vanish during mod_include driven subrequests. [Graham + Leggett] + + *) mod_cache_disk: Resolve errors while revalidating disk-cached files on + Windows ("...rename tempfile to datafile failed..."). PR 38827 + [Eric Covener] + + *) mod_proxy_balancer: Bring XML output up to date. [Jim Jagielski] + + *) htpasswd, htdbm: Optionally read passwords from stdin, as more + secure alternative to -b. PR 40243. [Adomas Paltanavicius <adomas + paltanavicius gmail com>, Stefan Fritsch] + + *) htpasswd, htdbm: Add support for bcrypt algorithm (requires + apr-util 1.5 or higher). PR 49288. [Stefan Fritsch] + + *) htpasswd, htdbm: Put full 48bit of entropy into salt, improve + error handling. Add some of htpasswd's improvements to htdbm, + e.g. warn if password is truncated by crypt(). [Stefan Fritsch] + + *) mod_auth_form: Support the expr parser in the + AuthFormLoginRequiredLocation, AuthFormLoginSuccessLocation and + AuthFormLogoutLocation directives. [Graham Leggett] + + *) mod_ssl: Add support for TLS-SRP (Secure Remote Password key exchange + for TLS, RFC 5054). PR 51075. [Quinn Slack <sqs cs stanford edu>, + Christophe Renou, Peter Sylvester] + + *) mod_rewrite: Stop mergeing RewriteBase down to subdirectories + unless new option 'RewriteOptions MergeBase' is configured. + PR 53963. [Eric Covener] + + *) mod_header: Allow for exposure of loadavg and server load using new + format specifiers %l, %i, %b [Jim Jagielski] + + *) core: Make ap_regcomp() return AP_REG_ESPACE if out of memory. Make + ap_pregcomp() abort if out of memory. This raises the minimum PCRE + requirement to version 6.0. [Stefan Fritsch] + + *) mod_proxy: Add ability to configure the sticky session separator. + PR 53893. [<inu inusasha de>, Jim Jagielski] + + *) mod_dumpio: Correctly log large messages + PR 54179 [Marek Wianecki <mieszek2 interia pl>] + + *) core: Don't fail at startup with AH00554 when Include points to + a directory without any wildcard character. [Eric Covener] + + *) core: Fail startup if the argument to ServerTokens is unrecognized. + [Jackie Zhang <jackie.qq.zhang gmail.com>] + + *) mod_log_forensic: Don't log a spurious "-" if a request has been rejected + before mod_log_forensic could attach its id to it. [Stefan Fritsch] + + *) rotatelogs: Omit the second argument for the first invocation of + a post-rotate program when -p is used, per the documentation. + [Joe Orton] + + *) mod_session_dbd: fix a segmentation fault in the function dbd_remove. + PR 53452. [<rebanerebane gmail com>, Reimo Rebane] + + *) core: Functions to provide server load values: ap_get_sload() and + ap_get_loadavg(). [Jim Jagielski, Jan Kaluza <jkaluza redhat.com>, + Jeff Trawick] + + *) mod_ldap: Fix regression in handling "server unavailable" errors on + Windows. PR 54140. [Eric Covener] + + *) syslog logging: Remove stray ", referer" at the end of some messages. + [Jeff Trawick] + + *) "Iterate" directives: Report an error if no arguments are provided. + [Jeff Trawick] + + *) mod_ssl: Change default for SSLCompression to off, as compression + causes security issues in most setups. (The so called "CRIME" attack). + [Stefan Fritsch] + + *) ab: add TLS1.1/TLS1.2 options to -f switch, and adapt output + to more accurately report the negotiated protocol. PR 53916. + [Nicolás Pernas Maradei <nico emutex com>, Kaspar Brand] + + *) core: ErrorDocument now works for requests without a Host header. + PR 48357. [Jeff Trawick] + + *) prefork: Avoid logging harmless errors during graceful stop. + [Joe Orton, Jeff Trawick] + + *) mod_proxy: When concatting for PPR, avoid cases where we + concat ".../" and "/..." to create "...//..." [Jim Jagielski] + + *) mod_cache: Wrong content type and character set when + mod_cache serves stale content because of a proxy error. + PR 53539. [Rainer Jung, Ruediger Pluem] + + *) mod_proxy_ajp: Fix crash in packet dump code when logging + with LogLevel trace7 or trace8. PR 53730. [Rainer Jung] + + *) httpd.conf: Removed the configuration directives setting a bad_DNT + environment introduced in 2.4.3. The actual directives are commented + out in the default conf file. + + *) core: Apply length limit when logging Status header values. + [Jeff Trawick, Chris Darroch] + + *) mod_proxy_balancer: The nonce is only derived from the UUID iff + not set via the 'nonce' balancer param. [Jim Jagielski] + + *) mod_ssl: Match wildcard SSL certificate names in proxy mode. + PR 53006. [Joe Orton] + + *) Windows: Fix output of -M, -L, and similar command-line options + which display information about the server configuration. + [Jeff Trawick] + +Changes with Apache 2.4.3 + + *) SECURITY: CVE-2012-3502 (cve.mitre.org) + mod_proxy_ajp, mod_proxy_http: Fix an issue in back end + connection closing which could lead to privacy issues due + to a response mixup. PR 53727. [Rainer Jung] + + *) SECURITY: CVE-2012-2687 (cve.mitre.org) + mod_negotiation: Escape filenames in variant list to prevent a + possible XSS for a site where untrusted users can upload files to + a location with MultiViews enabled. [Niels Heinen <heinenn google.com>] + + *) mod_authnz_ldap: Don't try a potentially expensive nested groups + search before exhausting all AuthLDAPGroupAttribute checks on the + current group. PR 52464 [Eric Covener] + + *) mod_lua: Add new directive LuaAuthzProvider to allow implementing an + authorization provider in lua. [Stefan Fritsch] + + *) core: Be less strict when checking whether Content-Type is set to + "application/x-www-form-urlencoded" when parsing POST data, + or we risk losing data with an appended charset. PR 53698 + [Petter Berntsen <petterb gmail.com>] + + *) httpd.conf: Added configuration directives to set a bad_DNT environment + variable based on User-Agent and to remove the DNT header field from + incoming requests when a match occurs. This currently has the effect of + removing DNT from requests by MSIE 10.0 because it deliberately violates + the current specification of DNT semantics for HTTP. [Roy T. Fielding] + + *) mod_socache_shmcb: Fix bus error due to a misalignment + in some 32 bit builds, especially on Solaris Sparc. + PR 53040. [Rainer Jung] + + *) mod_cache: Set content type in case we return stale content. + [Ruediger Pluem] + + *) Windows: Fix SSL failures on windows with AcceptFilter https none. + PR 52476. [Jeff Trawick] + + *) ab: Fix read failure when targeting SSL server. [Jeff Trawick] + + *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR: + - mod_auth_digest: shared memory file + [Jeff Trawick] + + *) htpasswd: Use correct file mode for checking if file is writable. + PR 45923. [Stefan Fritsch] + + *) mod_rewrite: Fix crash with dbd RewriteMaps. PR 53663. [Mikhail T. + <mi apache aldan algebra com>] + + *) mod_ssl: Add new directive SSLCompression to disable TLS-level + compression. PR 53219. [Björn Jacke <bjoern j3e de>, Stefan Fritsch] + + *) mod_lua: Add a few missing request_rec fields. Rename remote_ip to + client_ip to match conn_rec. [Stefan Fritsch] + + *) mod_lua: Change prototype of vm_construct, to work around gcc bug which + causes a segfault. PR 52779. [Dick Snippe <Dick Snippe tech omroep nl>] + + *) mpm_event: Don't count connections in lingering close state when + calculating how many additional connections may be accepted. + [Stefan Fritsch] + + *) mod_ssl: If exiting during initialization because of a fatal error, + log a message to the main error log pointing to the appropriate + virtual host error log. [Stefan Fritsch] + + *) mod_proxy_ajp: Reduce memory usage in case of many keep-alive requests on + one connection. PR 52275. [Naohiro Ooiwa <naohiro ooiwa miraclelinux com>] + + *) mod_proxy_balancer: Restore balancing after a failed worker has + recovered when using lbmethod_bybusyness. PR 48735. [Jeff Trawick] + + *) mod_setenvif: Compile some global regex only once during startup. + This should save some memory, especially with .htaccess. + [Stefan Fritsch] + + *) core: Add the port number to the vhost's name in the scoreboard. + [Stefan Fritsch] + + *) mod_proxy: Fix ProxyPassReverse for balancer configurations. + PR 45434. [Joe Orton] + + *) mod_lua: Add the parsebody function for parsing POST data. PR 53064. + [Daniel Gruno] + + *) apxs: Use LDFLAGS from config_vars.mk in addition to CFLAGS and CPPFLAGS. + [Stefan Fritsch] + + *) mod_proxy: Fix memory leak or possible corruption in ProxyBlock + implementation. [Ruediger Pluem, Joe Orton] + + *) mod_proxy: Check hostname from request URI against ProxyBlock list, + not forward proxy, if ProxyRemote* is configured. [Joe Orton] + + *) mod_proxy_connect: Avoid DNS lookup on hostname from request URI + if ProxyRemote* is configured. PR 43697. [Joe Orton] + + *) mpm_event, mpm_worker: Remain active amidst prevalent child process + resource shortages. [Jeff Trawick] + + *) Add "strict" and "warnings" pragmas to Perl scripts. [Rich Bowen] + + *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR: + - core: the scoreboard (ScoreBoardFile), pid file (PidFile), and + mutexes (Mutex) + [Jim Jagielski] + + *) ab: Fix bind() errors. [Joe Orton] + + *) mpm_event: Don't do a blocking write when starting a lingering close + from the listener thread. PR 52229. [Stefan Fritsch] + + *) mod_so: If a filename without slashes is specified for LoadFile or + LoadModule and the file cannot be found in the server root directory, + try to use the standard dlopen() search path. [Stefan Fritsch] + + *) mpm_event, mpm_worker: Fix cases where the spawn rate wasn't reduced + after child process resource shortages. [Jeff Trawick] + + *) mpm_prefork: Reduce spawn rate after a child process exits due to + unexpected poll or accept failure. [Jeff Trawick] + + *) core: Log value of Status header line in script responses rather + than the fixed header name. [Chris Darroch] + + *) mod_ssl: Fix handling of empty response from OCSP server. + [Jim Meyering <meyering redhat.com>, Joe Orton] + + *) mpm_event: Fix handling of MaxConnectionsPerChild. [Stefan Fritsch] + + *) mod_authz_core: If an expression in "Require expr" returns denied and + references %{REMOTE_USER}, trigger authentication and retry. PR 52892. + [Stefan Fritsch] + + *) core: Always log if LimitRequestFieldSize triggers. [Stefan Fritsch] + + *) mod_deflate: Skip compression if compression is enabled at SSL level. + [Stefan Fritsch] + + *) core: Add missing HTTP status codes registered with IANA. + [Julian Reschke <julian.reschke gmx.de>, Rainer Jung] + + *) mod_ldap: Treat the "server unavailable" condition as a transient + error with all LDAP SDKs. [Filip Valder <filip.valder vsb.cz>] + + *) core: Fix spurious "not allowed here" error returned when the Options + directive is used in .htaccess and "AllowOverride Options" (with no + specific options restricted) is configured. PR 53444. [Eric Covener] + + *) mod_authz_core: Fix parsing of Require arguments in <AuthzProviderAlias>. + PR 53048. [Stefan Fritsch] + + *) mod_log_config: Fix %{abc}C truncating cookie values at first "=". + PR 53104. [Greg Ames] + + *) mod_ext_filter: Fix error_log spam when input filters are configured. + [Joe Orton] + + *) mod_rewrite: Add "AllowAnyURI" option. PR 52774. [Joe Orton] + + *) htdbm, htpasswd: Don't crash if crypt() fails (e.g. with FIPS enabled). + [Paul Wouters <pwouters redhat.com>, Joe Orton] + + *) core: Use a TLS 1.0 close_notify alert for internal dummy connection if + the chosen listener is configured for https. [Joe Orton] + + *) mod_proxy: Use the the same hostname for SNI as for the HTTP request when + forwarding to SSL backends. PR 53134. + [Michael Weiser <michael weiser.dinsnail.net>, Ruediger Pluem] + + *) mod_info: Display all registered providers. [Stefan Fritsch] + + *) mod_ssl: Send the error message for speaking http to an https port using + HTTP/1.0 instead of HTTP/0.9, and omit the link that may be wrong when + using SNI. PR 50823. [Stefan Fritsch] + + *) core: Fix segfault in logging if r->useragent_addr or c->client_addr is + unset. PR 53265. [Stefan Fritsch] + + *) log_server_status: Bring Perl style forward to the present, use + standard modules, update for new format of server-status output. + PR 45424. [Richard Bowen, Dave Brondsema, and others] + + *) mod_sed, mod_log_debug, mod_rewrite: Symbol namespace cleanups. + [Joe Orton, André Malo] + + *) core: Prevent "httpd -k restart" from killing server in presence of + config error. [Joe Orton] + + *) mod_proxy_fcgi: If there is an error reading the headers from the + backend, send an error to the client. PR 52879. [Stefan Fritsch] + +Changes with Apache 2.4.2 + + *) SECURITY: CVE-2012-0883 (cve.mitre.org) + envvars: Fix insecure handling of LD_LIBRARY_PATH that could lead to the + current working directory to be searched for DSOs. [Stefan Fritsch] + + *) mod_slotmem_shm: Honor DefaultRuntimeDir [Jim Jagielski] + + *) mod_ssl: Fix crash with threaded MPMs due to race condition when + initializing EC temporary keys. [Stefan Fritsch] + + *) mod_rewrite: Fix RewriteCond integer checks to be parsed correctly. + PR 53023. [Axel Reinhold <apache freakout.de>, André Malo] + + *) mod_proxy: Add the forcerecovery balancer parameter that determines if + recovery for balancer workers is enforced. [Ruediger Pluem] + + *) Fix MPM DSO load failure on AIX. [Jeff Trawick] + + *) mod_proxy: Correctly set up reverse proxy worker. PR 52935. + [Petter Berntsen <petterb gmail.com>] + + *) mod_sed: Don't define PATH_MAX to a potentially undefined value, causing + compile problems on GNU hurd. [Stefan Fritsch] + + *) core: Add ap_runtime_dir_relative() and DefaultRuntimeDir. + [Jeff Trawick] + + *) core: Fix breakage of Listen directives with MPMs that use a + per-directory config. PR 52904. [Stefan Fritsch] + + *) core: Disallow directives in AllowOverrideList which are only allowed + in VirtualHost or server context. These are usually not prepared to be + called in .htaccess files. [Stefan Fritsch] + + *) core: In AllowOverrideList, do not allow 'None' together with other + directives. PR 52823. [Stefan Fritsch] + + *) mod_slotmem_shm: Support DEFAULT_REL_RUNTIMEDIR for file-based shm. + [Jim Jagielski] + + *) core: Fix merging of AllowOverrideList and ContentDigest. + [Stefan Fritsch] + + *) mod_request: Fix validation of the KeptBodySize argument so it + doesn't always throw a configuration error. PR 52981 [Eric Covener] + + *) core: Add filesystem paths to access denied / access failed messages + AH00035 and AH00036. [Eric Covener] + + *) mod_dumpio: Properly handle errors from subsequent input filters. + PR 52914. [Stefan Fritsch] + + *) Unix MPMs: Fix small memory leak in parent process if connect() + failed when waking up children. [Joe Orton] + + *) "DirectoryIndex disabled" now undoes DirectoryIndex settings in + the current configuration section, not just previous config sections. + PR 52845. [Eric Covener] + + *) mod_xml2enc: Fix broken handling of EOS buckets which could lead to + response headers not being sent. PR 52766. [Stefan Fritsch] + + *) mod_ssl: Properly free the GENERAL_NAMEs. PR 32652. [Kaspar Brand] + + *) core: Check during config test that directories for the access + logs actually exist. PR 29941. [Stefan Fritsch] + + *) mod_xml2enc, mod_proxy_html: Enable per-module loglevels. + [Stefan Fritsch] + + *) mod_filter: Fix segfault with AddOutputFilterByType. PR 52755. + [Stefan Fritsch] + + *) mod_session: Sessions are encoded as application/x-www-form-urlencoded + strings, however we do not handle the encoding of spaces properly. + Fixed. [Graham Leggett] + + *) Configuration: Example in comment should use a path consistent + with the default configuration. PR 52715. + [Rich Bowen, Jens Schleusener, Rainer Jung] + + *) Configuration: Switch documentation links from trunk to 2.4. + [Rainer Jung] + + *) configure: Fix out of tree build using apr and apr-util in srclib. + [Rainer Jung] + +Changes with Apache 2.4.1 + + *) SECURITY: CVE-2012-0053 (cve.mitre.org) + Fix an issue in error responses that could expose "httpOnly" cookies + when no custom ErrorDocument is specified for status code 400. + [Eric Covener] + + *) mod_proxy_balancer: Fix crash on Windows. PR 52402 [Mladen Turk] + + *) core: Check during configtest that the directories for error logs exist. + PR 29941 [Stefan Fritsch] + + *) Core configuration: add AllowOverride option to treat syntax + errors in .htaccess as non-fatal. PR 52439 [Nick Kew, Jim Jagielski] + + *) core: Fix memory consumption in core output filter with streaming + bucket types like CGI or PIPE. [Joe Orton, Stefan Fritsch] + + *) configure: Disable modules at configure time if a prerequisite module + is not enabled. PR 52487. [Stefan Fritsch] + + *) Rewrite and proxy now decline what they don't support rather + than fail the request. [Joe Orton] + + *) Fix building against external apr plus apr-util if apr is not installed + in a system default path. [Rainer Jung] + + *) Doxygen fixes and improvements. [Joe Orton, Igor Galić] + + *) core: Fix building against PCRE 8.30 by switching from the obsolete + pcre_info() to pcre_fullinfo(). PR 52623 [Ruediger Pluem, Rainer Jung] + +Changes with Apache 2.4.0 + + *) SECURITY: CVE-2012-0031 (cve.mitre.org) + Fix scoreboard issue which could allow an unprivileged child process + to cause the parent to crash at shutdown rather than terminate + cleanly. [Joe Orton] + + *) mod_ssl: Fix compilation with xlc on AIX. PR 52394. [Stefan Fritsch] + + *) SECURITY: CVE-2012-0021 (cve.mitre.org) + mod_log_config: Fix segfault (crash) when the '%{cookiename}C' log format + string is in use and a client sends a nameless, valueless cookie, causing + a denial of service. The issue existed since version 2.2.17 and 2.3.3. + PR 52256. [Rainer Canavan <rainer-apache 7val com>] + + *) mod_ssl: when compiled against OpenSSL 1.0.1 or later, allow explicit + control of TLSv1.1 and TLSv1.2 through the SSLProtocol directive. + [Kaspar Brand] + + *) mod_ssl: set OPENSSL_NO_SSL_INTERN when compiling against OpenSSL 1.0.1 + or later, to improve binary compatibility with future OpenSSL releases. + [Kaspar Brand] + + *) mod_mime: Don't arbitrarily bypass AddOutputFilter during a ProxyPass, + but then allow AddOutputFilter during a RewriteRule [P]. Make mod_mime + behave identically in both cases. PR52342. [Graham Leggett] + + *) Move ab, logresolve, httxt2dbm and apxs to bin from sbin, along with + corresponding man pages. [Graham Leggett] + + *) Distinguish properly between the bindir and sbindir directories when + installing binaries. Previously all binaries were silently installed to + sbindir, whether they were system administration commands or not. + [Graham Leggett] + +Changes with Apache 2.3.16 + + *) SECURITY: CVE-2011-4317 (cve.mitre.org) + Resolve additional cases of URL rewriting with ProxyPassMatch or + RewriteRule, where particular request-URIs could result in undesired + backend network exposure in some configurations. + [Joe Orton] + + *) core: Limit line length in .htaccess to 8K like in 2.2.x, to avoid + additional DoS potential. [Stefan Fritsch] + + *) core, all modules: Add unique tag to most error log messages. [Stefan + Fritsch] + + *) mod_socache_memcache: Change provider name from "mc" to "memcache" to + match module name. [Stefan Fritsch] + + *) mod_slotmem_shm: Change provider name from "shared" to "shm" to match + module name. [Stefan Fritsch] + + *) mod_ldap: Fix segfault with Solaris LDAP when enabling ldaps. This + requires an apr-util fix in which is available in apr-util >= 1.4.0. + PR 42682. [Stefan Fritsch] + + *) mod_rewrite: Add the AllowNoSlash RewriteOption, which makes it possible + for RewriteRules to be placed in .htaccess files that match the directory + with no trailing slash. PR 48304. + [Matthew Byng-Maddick <matthew byng-maddick bbc.co.uk>] + + *) mod_session_crypto: Add a SessionCryptoPassphraseFile directive so that + the administrator can hide the keys from the configuration. [Graham + Leggett] + + *) Introduce a per request version of the remote IP address, which can be + optionally modified by a module when the effective IP of the client + is not the same as the real IP of the client (such as a load balancer). + Introduce a per connection "peer_ip" and a per request "client_ip" to + distinguish between the raw IP address of the connection and the effective + IP address of the request. [Graham Leggett] + + *) ap_pass_brigade_fchk() function added. [Jim Jagielski] + + *) core: Pass ap_errorlog_info struct to error log hook. [Stefan Fritsch] + + *) mod_cache_disk: Make sure we check return codes on all writes and + attempts to close, and clean up after ourselves in these cases. + PR43589. [Graham Leggett] + + *) mod_cache_disk: Remove the unnecessary intermediate brigade while + writing to disk. Fixes a problem where mod_disk_cache was leaving + buckets in the intermediate brigade and not passing them to out on + exit. [Florian S. <f_los_ch yahoo.com>, Graham Leggett] + + *) mod_ssl: use a shorter setting for SSLCipherSuite in the default + default configuration file, and add some more information about + configuring a speed-optimized alternative. + [Kaspar Brand] + + *) mod_ssl: drop support for the SSLv2 protocol. [Kaspar Brand] + + *) mod_lua: Stop losing track of all but the most specific LuaHook* directives + when multiple per-directory config sections are used. Adds LuaInherit + directive to control how parent sections are merged. [Eric Covener] + + *) Server directive display (-L): Include directives of DSOs. + [Jeff Trawick] + + *) mod_cache: Make sure we merge headers correctly when we handle a + non cacheable conditional response. PR52120. [Graham Leggett] + + *) Pre GA removal of components that will not be included: + - mod_noloris was superseded by mod_reqtimeout + - mod_serf + - mpm_simple + [Rainer Jung] + + *) core: Set MaxMemFree 2048 by default. [Stefan Fritsch] + + *) mpm_event: Fix assertion failure during very high load. [Stefan Fritsch] + + *) configure: Additional modules loaded by default: mod_headers. + Modules moved from module set "few" to "most" and no longer loaded + by default: mod_actions, mod_allowmethods, mod_auth_form, mod_buffer, + mod_cgi(d), mod_include, mod_negotiation, mod_ratelimit, mod_request, + mod_userdir. [Rainer Jung] + + *) mod_lua: Use the right lua scope when used as a hook. [Rainer Jung] + + *) configure: Only load the really imporant modules (i.e. those enabled by + the 'few' selection) by default. Don't handle modules enabled with + --enable-foo specially. [Stefan Fritsch] + + *) end-generation hook: Fix false notification of end-of-generation for + temporary intervals with no active MPM children. [Jeff Trawick] + + *) mod_ssl: Add support for configuring persistent TLS session ticket + encryption/decryption keys (useful for clustered environments). + [Paul Querna, Kaspar Brand] + + *) mod_usertrack: Use random value instead of remote IP address. + [Stefan Fritsch] + +Changes with Apache 2.3.15 + + *) SECURITY: CVE-2011-3348 (cve.mitre.org) + mod_proxy_ajp: Respond with HTTP_NOT_IMPLEMENTED when the method is not + recognized. [Jean-Frederic Clere] + + *) SECURITY: CVE-2011-3192 (cve.mitre.org) + core: Fix handling of byte-range requests to use less memory, to avoid + denial of service. If the sum of all ranges in a request is larger than + the original file, ignore the ranges and send the complete file. + PR 51714. [Stefan Fritsch, Jim Jagielski, Ruediger Pluem, Eric Covener, + <lowprio20 gmail.com>] + + *) SECURITY: CVE-2011-3607 (cve.mitre.org) + core: Fix integer overflow in ap_pregsub. This can be triggered e.g. + with mod_setenvif via a malicious .htaccess. [Stefan Fritsch] + + *) SECURITY: CVE-2011-3368 (cve.mitre.org) + Reject requests where the request-URI does not match the HTTP + specification, preventing unexpected expansion of target URLs in + some reverse proxy configurations. [Joe Orton] + + *) configure: Load all modules in the generated default configuration + when using --enable-load-all-modules. [Rainer Jung] + + *) mod_reqtimeout: Change the default to set some reasonable timeout + values. [Stefan Fritsch] + + *) core, mod_dav_fs: Change default ETag to be "size mtime", i.e. remove + the inode. PR 49623. [Stefan Fritsch] + + *) mod_lua: Expose SSL variables via r:ssl_var_lookup(). [Eric Covener] + + *) mod_lua: LuaHook{AccessChecker,AuthChecker,CheckUserID,TranslateName} + can now additionally be run as "early" or "late" relative to other modules. + [Eric Covener] + + *) configure: By default, only load those modules that are either required + or explicitly selected by a configure --enable-foo argument. The + LoadModule statements for modules enabled by --enable-mods-shared=most + and friends will be commented out. [Stefan Fritsch] + + *) mod_lua: Prevent early Lua hooks (LuaHookTranslateName and + LuaHookQuickHandler) from being configured in <Directory>, <Files>, + and htaccess where the configuration would have been ignored. + [Eric Covener] + + *) mod_lua: Resolve "attempt to index local 'r' (a userdata value)" errors + in LuaMapHandler scripts [Eric Covener] + + *) mod_log_debug: Rename optional argument from if= to expr=, to be more + in line with other config directives. [Stefan Fritsch] + + *) mod_headers: Require an expression to be specified with expr=, to be more + in line with other config directives. [Stefan Fritsch] + + *) mod_substitute: To prevent overboarding memory usage, limit line length + to 1MB. [Stefan Fritsch] + + *) mod_lua: Make the query string (r.args) writable. [Eric Covener] + + *) mod_include: Add support for application/x-www-form-urlencoded encoding + and decoding. [Graham Leggett] + + *) rotatelogs: Add -c option to force logfile creation in every rotation + interval, even if empty. [Jan Kaluža <jkaluza redhat.com>] + + *) core: Limit ap_pregsub() to 64K, add ap_pregsub_ex() for longer strings. + [Stefan Fritsch] + + *) mod_session_crypto: Refactor to support the new apr_crypto API. + [Graham Leggett] + + *) http: Add missing Location header if local URL-path is used as + ErrorDocument for 30x. [Stefan Fritsch] + + *) mod_buffer: Make sure we step down for subrequests, but not for internal + redirects triggered by mod_rewrite. [Graham Leggett] + + *) mod_lua: add r:construct_url as a wrapper for ap_construct_url. + [Eric Covener] + + *) mod_remote_ip: Fix configuration of internal proxies. PR 49272. + [Jim Riggs <jim riggs me>] + + *) mpm_winnt: Handle AcceptFilter 'none' mode correctly; resolve specific + server IP endpoint and remote client IP upon connection. [William Rowe] + + *) mod_setenvif: Remove OID match which is obsoleted by SetEnvIfExpr with + PeerExtList(). [Stefan Fritsch] + + *) mpm_prefork, mpm_worker, mpm_event: If a child is created just before + graceful restart and then exits because of a missing lock file, don't + shutdown the whole server. PR 39311. [Shawn Michael + <smichael rightnow com>] + + *) mpm_event: Check the return value from ap_run_create_connection. + PR 41194. [Davi Arnaut] + + *) mod_mime_magic: Add signatures for PNG and SWF to the example config. + PR 48352. [Jeremy Wagner-Kaiser <jwagner-kaiser adknowledge com>] + + *) core, unixd: Add -D DUMP_RUN_CFG option to dump some configuration items + from the parsed (or default) config. This is useful for init scripts that + need to setup temporary directories and permissions. [Stefan Fritsch] + + *) core, mod_actions, mod_asis: Downgrade error log messages which accompany + a 404 request status from loglevel error to info. PR 35768. [Stefan + Fritsch] + + *) core: Fix hook sorting with Perl modules. PR 45076. [Torsten Foertsch + <torsten foertsch gmx net>] + + *) core: Enforce LimitRequestFieldSize after multiple headers with the same + name have been merged. [Stefan Fritsch] + + *) mod_ssl: If MaxMemFree is set, ask OpenSSL >= 1.0.0 to reduce memory + usage. PR 51618. [Cristian Rodríguez <crrodriguez opensuse org>, + Stefan Fritsch] + + *) mod_ssl: At startup, when checking a server certificate whether it + matches the configured ServerName, also take dNSName entries in the + subjectAltName extension into account. PR 32652, PR 47051. [Kaspar Brand] + + *) mod_substitute: Reduce memory usage and copying of data. PR 50559. + [Stefan Fritsch] + + *) mod_ssl/proxy: enable the SNI extension for backend TLS connections + [Kaspar Brand] + + *) Add wrappers for malloc, calloc, realloc that check for out of memory + situations and use them in many places. PR 51568, PR 51569, PR 51571. + [Stefan Fritsch] + + *) Fix cross-compilation of mod_cgi/mod_cgid when APR_HAVE_STRUCT_RLIMIT is + false but RLIMIT_* are defined. PR51371. [Eric Covener] + + *) core: Correctly obey ServerName / ServerAlias if the Host header from the + request matches the VirtualHost address. + PR 51709. [Micha Lenk <micha lenk.info>] + + *) mod_unique_id: Use random number generator to initialize counter. + PR 45110. [Stefan Fritsch] + + *) core: Add convenience API for apr_random. [Stefan Fritsch] + + *) core: Add MaxRangeOverlaps and MaxRangeReversals directives to control + the number of overlapping and reversing ranges (respectively) permitted + before returning the entire resource, with a default limit of 20. + [Jim Jagielski] + + *) mod_ldap: Optional function uldap_ssl_supported(r) always returned false + if called from a virtual host with mod_ldap directives in it. Did not + affect mod_authnz_ldap's usage of mod_ldap. [Eric Covener] + + *) mod_filter: Instead of dropping the Accept-Ranges header when a filter + registered with AP_FILTER_PROTO_NO_BYTERANGE is present, + set the header value to "none". [Eric Covener, Ruediger Pluem] + + *) core: Allow MaxRanges none|unlimited|default and set 'Accept-Ranges: none' + in the case Ranges are being ignored with MaxRanges none. + [Eric Covener] + + *) mod_ssl: revamp CRL-based revocation checking when validating + certificates of clients or proxied servers. Completely delegate + CRL processing to OpenSSL, and add a new [Proxy]CARevocationCheck + directive for controlling the revocation checking mode. [Kaspar Brand] + + *) core: Add MaxRanges directive to control the number of ranges permitted + before returning the entire resource, with a default limit of 200. + [Eric Covener] + + *) mod_cache: Ensure that CacheDisable can correctly appear within + a LocationMatch. [Graham Leggett] + + *) mod_cache: Fix the moving of the CACHE filter, which erroneously + stood down if the original filter was not added by configuration. + [Graham Leggett] + + *) mod_ssl: improve certificate error logging. PR 47408. [Kaspar Brand] + + *) mod_authz_groupfile: Increase length limit of lines in the group file to + 16MB. PR 43084. [Stefan Fritsch] + + *) core: Increase length limit of lines in the configuration file to 16MB. + PR 45888. PR 50824. [Stefan Fritsch] + + *) core: Add API for resizable buffers. [Stefan Fritsch] + + *) mod_ldap: Enable LDAPConnectionTimeout for LDAP toolkits that have + LDAP_OPT_CONNECT_TIMEOUT instead of LDAP_OPT_NETWORK_TIMEOUT, such + as Tivoli Directory Server 6.3 and later. [Eric Covener] + + *) mod_ldap: Change default number of retries from 10 to 3, and add + an LDAPRetries and LDAPRetryDelay directives. [Eric Covener] + + *) mod_authnz_ldap: Don't retry during authentication, because this just + multiplies the ample retries already being done by mod_ldap. [Eric Covener] + + *) configure: Allow to explicitly disable modules even with module selection + 'reallyall'. [Stefan Fritsch] + + *) mod_rewrite: Check validity of each internal (int:) RewriteMap even if the + RewriteEngine is disabled in server context, avoiding a crash while + referencing the invalid int: map at runtime. PR 50994. + [Ben Noordhuis <info noordhuis nl>] + + *) mod_ssl, configure: require OpenSSL 0.9.7 or later. [Kaspar Brand] + + *) mod_ssl: remove ssl_toolkit_compat layer. [Kaspar Brand] + + *) mod_ssl, configure, ab: drop support for RSA BSAFE SSL-C toolkit. + [Kaspar Brand] + + *) mod_usertrack: Run mod_usertrack earlier in the fixups hook to ensure the + cookie is set when modules such as mod_rewrite trigger a redirect. Also + use r->err_headers_out for the cookie, for the same reason. PR29755. + [Sami J. Mäkinen <sjm almamedia fi>, Eric Covener] + + *) mod_proxy_http, mod_proxy_connect: Add 'proxy-status' and + 'proxy-source-port' request notes for logging. PR 30195. [Stefan Fritsch] + + *) configure: Enable ldap modules in 'all' and 'most' selections if ldap + is compiled into apr-util. [Stefan Fritsch] + + *) core: Add ap_check_cmd_context()-check if a command is executed in + .htaccess file. [Stefan Fritsch] + + *) mod_deflate: Fix endless loop if first bucket is metadata. PR 51590. + [Torsten Foertsch <torsten foertsch gmx net>] + + *) mod_authn_socache: Fix to work in .htaccess if not configured anywhere + in httpd.conf, and introduce an AuthnCacheEnable directive. + PR 51991 [Nick Kew] + + *) mod_xml2enc: new (formerly third-party) module supporting + internationalisation for filters via smart charset sniffing + and conversion. [Nick Kew] + + *) mod_proxy_html: new (formerly third-party) module to fix up + HTML links in a reverse proxy situation, where a backend + generates URLs that are not resolvable by Clients. [Nick Kew] + +Changes with Apache 2.3.14 + + *) mod_proxy_ajp: Improve trace logging. [Rainer Jung] + + *) mod_proxy_ajp: Respect "reuse" flag in END_REPONSE packets. + [Rainer Jung] + + *) mod_proxy: enable absolute URLs to be rewritten with ProxyPassReverse, + e.g. to reverse proxy "Location: https://other-internal-server/login" + [Nick Kew] + + *) prefork, worker, event: Make sure crashes are logged to the error log if + httpd has already detached from the console. [Stefan Fritsch] + + *) prefork, worker, event: Reduce period during startup/restart where a + successive signal may be lost. PR 43696. [Arun Bhalla <arun shme net>] + + *) mod_allowmethods: Correct Merging of "reset" and do not allow an + empty parameter list for the AllowMethods directive. [Rainer Jung] + + *) configure: Update selection of modules for 'all' and 'most'. 'all' will + now enable all modules except for example and test modules. Make the + selection for 'most' more useful (including ssl and proxy). Both 'all' + and 'most' will now disable modules if dependencies are missing instead + of aborting. If a specific module is requested with --enable-XXX=yes, + missing dependencies will still cause configure to exit with an error. + [Stefan Fritsch] + + *) mod_ldap: Revert the integration of apr-ldap as ap_ldap which was done + in 2.3.13. [Stefan Fritsch] + + *) core: For '*' or '_default_' vhosts, use a wildcard address of any + address family, rather than IPv4 only. [Joe Orton] + + *) core, mod_rewrite, mod_ssl, mod_nw_ssl: Make the SERVER_NAME variable + include [ ] for literal IPv6 addresses, as mandated by RFC 3875. + PR 26005. [Stefan Fritsch] + + *) mod_negotiation: Fix parsing of Content-Length in type maps. PR 42203. + [Nagae Hidetake <nagae eagan jp>] + + *) core: Add more logging to ap_scan_script_header_err* functions. Add + ap_scan_script_header_err*_ex functions that take a module index for + logging. + mod_cgi, mod_cgid, mod_proxy_fcgi, mod_proxy_scgi, mod_isapi: Use the + new functions in order to make logging configurable per-module. + [Stefan Fritsch] + + *) mod_dir: Add DirectoryIndexRedirect to send an external redirect to + the proper index. [Eric Covener] + + *) mod_deflate: Don't try to compress requests with a zero sized body. + PR 51350. [Stefan Fritsch] + + *) core: Fix startup on IPv6-only systems. PR 50592. [Joe Orton, + <root linkage white-void net>] + + *) suexec: Add environment variables CONTEXT_DOCUMENT_ROOT, CONTEXT_PREFIX, + REDIRECT_ERROR_NOTES, REDIRECT_SCRIPT_FILENAME, REQUEST_SCHEME to the + whitelist in suexec. PR 51499. [Graham Laverty <graham reg ca>, + Stefan Fritsch] + + *) mod_rewrite: Fix regexp RewriteCond with NoCase. [Stefan Fritsch] + + *) mod_log_debug: New module that allows to log custom messages at various + phases in the request processing. [Stefan Fritsch] + + *) mod_ssl: Add some debug logging when loading server certificates. + PR 37912. [Nick Burch <nick burch alfresco com>] + + *) configure: Support reallyall option also for --enable-mods-static. + [Rainer Jung] + + *) mod_socache_dc: add --with-distcache to configure for choosing + the distcache installation directory. [Rainer Jung] + + *) mod_socache_dc: use correct build variable MOD_SOCACHE_DC_LDADD + instead of MOD_SOCACHE_LDADD in build macro. [Rainer Jung] + + *) mod_lua, mod_deflate: respect platform specific runpath linker + flag. [Rainer Jung] + + *) configure: Only link the httpd binary against PCRE. No other support + binary needs PCRE. [Rainer Jung] + + *) configure: tolerate dependency checking failures for modules if + they have been enabled implicitly. [Rainer Jung] + + *) configure: Allow to specify module specific custom linker flags via + the MOD_XXX_LDADD variables. [Rainer Jung] + +Changes with Apache 2.3.13 + + *) ab: Support specifying the local address to use. PR 48930. + [Peter Schuller <scode spotify com>] + + *) core: Add support to ErrorLogFormat for logging the system unique + thread id under Linux. [Stefan Fritsch] + + *) event: New AsyncRequestWorkerFactor directive to influence how many + connections will be accepted per process. [Stefan Fritsch] + + *) prefork, worker, event: Rename MaxClients to MaxRequestWorkers which + describes more accurately what it does. [Stefan Fritsch] + + *) rotatelogs: Add -p argument to specify custom program to invoke + after a log rotation. PR 51285. [Sven Ulland <sveniu ifi.uio.no>, + Joe Orton] + + *) mod_ssl: Don't do OCSP checks for valid self-issued certs. [Kaspar Brand] + + *) mod_ssl: Avoid unnecessary renegotiations with SSLVerifyDepth 0. + PR 48215. [Kaspar Brand] + + *) mod_status: Display information about asynchronous connections in the + server-status. PR 44377. [Stefan Fritsch] + + *) mpm_event: If the number of connections of a process is very high, or if + all workers are busy, don't accept new connections in that process. + [Stefan Fritsch] + + *) mpm_event: Process lingering close asynchronously instead of tying up + worker threads. [Jeff Trawick, Stefan Fritsch] + + *) mpm_event: If MaxMemFree is set, limit the number of pools that is kept + around. [Stefan Fritsch] + + *) mpm_event: Fix graceful restart aborting connections. PR 43359. + [Takashi Sato <takashi lans-tv com>] + + *) mod_ssl: Disable AECDH ciphers in example config. PR 51363. + [Rob Stradling <rob comodo com>] + + *) core: Introduce new function ap_get_conn_socket() to access the socket of + a connection. [Stefan Fritsch] + + *) mod_data: Introduce a filter to support RFC2397 data URLs. [Graham + Leggett] + + *) mod_userdir/mod_alias/mod_vhost_alias: Correctly set DOCUMENT_ROOT, + CONTEXT_DOCUMENT_ROOT, CONTEXT_PREFIX. PR 26052. PR 46198. + [Stefan Fritsch] + + *) core: Allow to override document_root on a per-request basis. Introduce + new context_document_root and context_prefix which provide information + about non-global URI-to-directory mappings (from e.g. mod_userdir or + mod_alias) to scripts. PR 49705. [Stefan Fritsch] + + *) core: Add <ElseIf> and <Else> to complement <If> sections. + [Stefan Fritsch] + + *) mod_ext_filter: Remove DebugLevel option in favor of per-module loglevel. + [Stefan Fritsch] + + *) mod_include: Make the "#if expr" element use the new "ap_expr" expression + parser. The old parser can still be used by setting the new directive + SSILegacyExprParser. [Stefan Fritsch] + + *) core: Add some features to ap_expr for use by mod_include: a restricted + mode that does not allow to bypass request access restrictions; new + variables DOCUMENT_URI (alias for REQUEST_URI), LAST_MODIFIED; -A as an + alias for -U; an additional data entry in ap_expr_eval_ctx_t for use by + the consumer; an extensible ap_expr_exec_ctx() API that allows to use that + data entry. [Stefan Fritsch] + + *) mod_include: Merge directory configs instead of one SSI* config directive + causing all other per-directory SSI* config directives to be reset. + [Stefan Fritsch] + + *) mod_charset_lite: Remove DebugLevel option in favour of per-module + loglevel. [Stefan Fritsch] + + *) core: Add ap_regexec_len() function that works with non-null-terminated + strings. PR 51231. [Yehezkel Horowitz <horowity checkpoint com>] + + *) mod_authnz_ldap: If the LDAP server returns constraint violation, + don't treat this as an error but as "auth denied". [Stefan Fritsch] + + *) mod_proxy_fcgi|scgi: Add support for "best guess" of PATH_INFO + for SCGI/FCGI. PR 50880, 50851. [Mark Montague <mark catseye.org>, + Jim Jagielski] + + *) mod_cache: When content is served stale, and there is no means to + revalidate the content using ETag or Last-Modified, and we have + mandated no stale-on-error behaviour, stand down and don't cache. + Saves a cache write that will never be read. + [Graham Leggett] + + *) mod_reqtimeout: Fix a timed out connection going into the keep-alive + state after a timeout when discarding a request body. PR 51103. + [Stefan Fritsch] + + *) core: Add various file existence test operators to ap_expr. + [Stefan Fritsch] + + *) mod_proxy_express: New mass reverse-proxy switch extension for + mod_proxy. [Jim Jagielski] + + *) configure: Fix script error when configuring module set "reallyall". + [Rainer Jung] + +Changes with Apache 2.3.12 + + *) configure, core: Provide easier support for APR's hook probe + capability. [Jim Jagielski, Jeff Trawick] + + *) Silence autoconf 2.68 warnings. [Rainer Jung] + + *) mod_authnz_ldap: Resolve crash when LDAP is used for authorization only + [Scott Hill <shill genscape.com>] + + *) support: Make sure check_forensic works with mod_unique_id loaded + [Joe Schaefer] + + *) Add child_status hook for tracking creation/termination of MPM child + processes. Add end_generation hook for notification when the last + MPM child of a generation exits. [Jeff Trawick] + + *) mod_ldap: Make LDAPSharedCacheSize 0 create a non-shared-memory cache per + process as opposed to disabling caching completely. This allows to use + the non-shared-memory cache as a workaround for the shared memory cache + not being available during graceful restarts. PR 48958. [Stefan Fritsch] + + *) Add new ap_reserve_module_slots/ap_reserve_module_slots_directive API, + necessary if a module (like mod_perl) registers additional modules late + in the startup phase. [Stefan Fritsch] + + *) core: Prevent segfault if DYNAMIC_MODULE_LIMIT is reached. PR 51072. + [Torsten Förtsch <torsten foertsch gmx net>] + + *) WinNT MPM: Improve robustness under heavy load. [Jeff Trawick] + + *) MinGW build improvements. PR 49535. [John Vandenberg + <jayvdb gmail.com>, Jeff Trawick] + + *) core: Support module names with colons in loglevel configuration. + [Torsten Förtsch <torsten foertsch gmx net>] + + *) mod_ssl, ab: Support OpenSSL compiled without SSLv2 support. + [Stefan Fritsch] + + *) core: Abort if the MPM is changed across restart. [Jeff Trawick] + + *) mod_proxy_ajp: Add support for 'ProxyErrorOverride on'. PR 50945. + [Peter Pramberger <peter pramberger.at>, Jim Jagielski] + + *) mod_proxy_fcgi: Add support for 'ProxyErrorOverride on'. PR 50913. + [Mark Montague <mark catseye.org>, Jim Jagielski] + + *) core: Change the APIs of ap_cfg_getline() and ap_cfg_getc() to return an + error code. Abort with a nice error message if a config line is too long. + Partial fix for PR 50824. [Stefan Fritsch] + + *) mod_info: Dump config to stdout during startup if -DDUMP_CONFIG is + specified. PR 31956. [Stefan Fritsch] + + *) Restore visibility of DEFAULT_PIDLOG to core and modules. MPM + helper function ap_remove_pid() added. [Jeff Trawick] + + *) Enable DEFAULT_REL_RUNTIMEDIR on Windows and NetWare. [various] + + *) Correct C++ incompatibility with http_log.h. [Stefan Fritsch, Jeff + Trawick] + + *) mod_log_config: Prevent segfault. PR 50861. [Torsten Förtsch + <torsten.foertsch gmx.net>] + + *) core: AllowEncodedSlashes new option NoDecode to allow encoded slashes + in request URL path info but not decode them. Change behavior of option + "On" to decode the encoded slashes as 2.0 and 2.2 do. PR 35256, + PR 46830. [Dan Poirier] + + *) mod_ssl: Check SNI hostname against Host header case-insensitively. + PR 49491. [Mayank Agrawal <magrawal.08 gmail.com>] + + *) mod_ldap: Add LDAPConnectionPoolTTL to give control over lifetime + of bound backend LDAP connections. PR47634 [Eric Covener] + + *) mod_cache: Make CacheEnable and CacheDisable configurable per + directory in addition to per server, making them work from within + a LocationMatch. [Graham Leggett] + + *) worker, event, prefork: Correct several issues when built as + DSOs; most notably, the scoreboard was reinitialized during graceful + restart, such that processes of the previous generation were not + observable. [Jeff Trawick] + +Changes with Apache 2.3.11 + + *) mod_win32: Added shebang check for '! so that .vbs scripts work as CGI. + Win32's cscript interpreter can only use a single quote as comment char. + [Guenter Knauf] + + *) mod_proxy: balancer-manager now uses POST instead of GET. + [Jim Jagielski] + + *) core: new util function: ap_parse_form_data(). Previously, + this capability was tucked away in mod_request. [Jim Jagielski] + + *) core: new hook: ap_run_pre_read_request. [Jim Jagielski] + + *) modules: Fix many modules that were not correctly initializing if they + were not active during server startup but got enabled later during a + graceful restart. [Stefan Fritsch] + + *) core: Create new ap_state_query function that allows modules to determine + if the current configuration run is the initial one at server startup, + and if the server is started for testing/config dumping only. + [Stefan Fritsch] + + *) mod_proxy: Runtime configuration of many parameters for existing + balancers via the balancer-manager. [Jim Jagielski] + + *) mod_proxy: Runtime addition of new workers (BalancerMember) for existing + balancers via the balancer-manager. [Jim Jagielski] + + *) mod_cache: When a bad Expires date is present, we need to behave as if + the Expires is in the past, not as if the Expires is missing. PR 16521. + [Co-Advisor <coad measurement-factory.com>] + + *) mod_cache: We must ignore quoted-string values that appear in a + Cache-Control header. PR 50199. [Graham Leggett] + + *) mod_dav: Revert change to send 501 error if unknown Content-* header is + received for a PUT request. PR 42978. [Stefan Fritsch] + + *) mod_cache: Respect s-maxage as described by RFC2616 14.9.3, which must + take precedence if present. PR 35247. [Graham Leggett] + + *) mod_ssl: Fix a possible startup failure if multiple SSL vhosts + are configured with the same ServerName and private key file. + [Masahiro Matsuya <mmatsuya redhat.com>, Joe Orton] + + *) mod_socache_dc: Make module compile by fixing some typos. + PR 50735 [Mark Montague <mark catseye.org>] + + *) prefork: Update MPM state in children during a graceful stop or + restart. PR 41743. [Andrew Punch <andrew.punch 247realmedia.com>] + + *) mod_mime: Ignore leading dots when looking for mime extensions. + PR 50434 [Stefan Fritsch] + + *) core: Add support to set variables with the 'Define' directive. The + variables that can then be used in the config using the ${VAR} syntax + known from envvar interpolation. [Stefan Fritsch] + + *) mod_proxy_http: make adding of X-Forwarded-* headers configurable. + ProxyAddHeaders defaults to On. [Vincent Deffontaines] + + *) mod_slotmem_shm: Increase memory alignment for slotmem data. + [Rainer Jung] + + *) mod_ssl: Add config options for OCSP: SSLOCSPResponderTimeout, + SSLOCSPResponseMaxAge, SSLOCSPResponseTimeSkew. + [Kaspar Brand <httpd-dev.2011 velox.ch>] + + *) mod_ssl: Revamp output buffering to reduce network overhead for + output fragmented into many buckets, such as chunked HTTP responses. + [Joe Orton] + + *) core: Apply <If> sections to all requests, not only to file base requests. + Allow to use <If> inside <Directory>, <Location>, and <Files> sections. + The merging of <If> sections now happens after the merging of <Location> + sections, even if an <If> section is embedded inside a <Directory> or + <Files> section. [Stefan Fritsch] + + *) mod_proxy: Refactor usage of shared data by dropping the scoreboard + and using slotmem. Create foundation for dynamic growth/changes of + members within a balancer. Remove BalancerNonce in favor of a + per-balancer 'nonce' parameter. [Jim Jagielski] + + *) mod_status: Don't show slots which are disabled by MaxClients as open. + PR 47022 [Jordi Prats <jordi prats gmail com>, Stefan Fritsch] + + *) mpm_prefork: Fix ap_mpm_query results for AP_MPMQ_MAX_DAEMONS and + AP_MPMQ_MAX_THREADS. + + *) mod_authz_core: Fix bug in merging logic if user-based and non-user-based + authorization directives were mixed. [Stefan Fritsch] + + *) mod_authn_socache: change directive name from AuthnCacheProvider + to AuthnCacheProvideFor. The term "provider" is overloaded in + this module, and we should avoid confusion between the provider + of a backend (AuthnCacheSOCache) and the authn provider(s) for + which this module provides cacheing (AuthnCacheProvideFor). + [Nick Kew] + + *) mod_proxy_http: Allocate the fake backend request from a child pool + of the backend connection, instead of misusing the pool of the frontend + request. Fixes a thread safety issue where buckets set aside in the + backend connection leak into other threads, and then disappear when + the frontend request is cleaned up, in turn causing corrupted buckets + to make other threads spin. [Graham Leggett] + + *) mod_ssl: Change the format of the SSL_{CLIENT,SERVER}_{I,S}_DN variables + to be RFC 2253 compatible, convert non-ASCII characters to UTF8, and + escape other special characters with backslashes. The old format can + still be used with the LegacyDNStringFormat argument to SSLOptions. + + *) core, mod_rewrite: Make the REQUEST_SCHEME variable available to + scripts and mod_rewrite. [Stefan Fritsch] + + *) mod_rewrite: Allow to use arbitrary boolean expressions (ap_expr) in + RewriteCond. [Stefan Fritsch] + + *) mod_rewrite: Allow to unset environment variables using E=!VAR. + PR 49512. [Mark Drayton <mark markdrayton info>, Stefan Fritsch] + + *) mod_headers: Restore the 2.3.8 and earlier default for the first + argument of the Header directive ("onsuccess"). [Eric Covener] + + *) core: Disallow the mixing of relative and absolute Options PR 33708. + [Sönke Tesch <st kino-fahrplan.de>] + + *) core: When exporting request headers to HTTP_* environment variables, + drop variables whose names contain invalid characters. Describe in the + docs how to restore the old behaviour. [Malte S. Stretz <mss apache org>] + + *) core: When selecting an IP-based virtual host, favor an exact match for + the port over a wildcard (or omitted) port instead of favoring the one + that came first in the configuration file. [Eric Covener] + + *) core: Overlapping virtual host address/port combinations now implicitly + enable name-based virtual hosting for that address. The NameVirtualHost + directive has no effect, and _default_ is interpreted the same as "*". + [Eric Covener] + + *) core: In the absence of any Options directives, the default is now + "FollowSymlinks" instead of "All". [Igor Galić] + + *) rotatelogs: Add -e option to write logs through to stdout for optional + further processing. [Graham Leggett] + + *) mod_ssl: Correctly read full lines in input filter when the line is + incomplete during first read. PR 50481. [Ruediger Pluem] + + *) mod_authz_core: Add AuthzSendForbiddenOnFailure directive to allow + sending '403 FORBIDDEN' instead of '401 UNAUTHORIZED' if authorization + fails for an authenticated user. PR 40721. [Stefan Fritsch] + +Changes with Apache 2.3.10 + + *) mod_rewrite: Don't implicitly URL-escape the original query string + when no substitution has changed it. PR 50447. [Eric Covener] + + *) core: Honor 'AcceptPathInfo OFF' during internal redirects, + such as per-directory mod_rewrite substitutions. PR 50349. + [Eric Covener] + + *) mod_rewrite: Add 'RewriteOptions InheritBefore' to put the base + rules/conditions before the overridden rules/conditions. PR 39313. + [Jérôme Grandjanny <jerome.grandjanny cea.fr>] + + *) mod_autoindex: add IndexIgnoreReset to reset the list of IndexIgnored + filenames in higher precedence configuration sections. PR 24243. + [Eric Covener] + + *) mod_cgid: RLimit* directive support for mod_cgid. PR 42135 + [Eric Covener] + + *) core: Fail startup when the argument to ServerName looks like a glob + or a regular expression instead of a hostname (*?[]). PR 39863 + [Rahul Nair <rahul.g.nair gmail.com>] + + *) mod_userdir: Add merging of enable, disable, and filename arguments + to UserDir directive, leaving enable/disable of userlists unmerged. + PR 44076 [Eric Covener] + + *) httpd: When no -k option is provided on the httpd command line, the server + was starting without checking for an existing pidfile. PR 50350 + [Eric Covener] + + *) mod_proxy: Put the worker in error state if the SSL handshake with the + backend fails. PR 50332. + [Daniel Ruggeri <DRuggeri primary.net>, Ruediger Pluem] + + *) mod_cache_disk: Fix Windows build which was broken after renaming + the module. [Gregg L. Smith] + +Changes with Apache 2.3.9 + + *) SECURITY: CVE-2010-1623 (cve.mitre.org) + Fix a denial of service attack against mod_reqtimeout. + [Stefan Fritsch] + + *) mod_headers: Change default first argument of Header directive + from "onsuccess" to "always". [Eric Covener] + + *) mod_include: Add the onerror attribute to the include element, + allowing an URL to be specified to include on error. [Graham + Leggett] + + *) mod_cache_disk: mod_disk_cache renamed to mod_cache_disk, to be + consistent with the naming of other modules. [Graham Leggett] + + *) mod_setenvif: Add SetEnvIfExpr directive to set env var depending on + expression. [Stefan Fritsch] + + *) mod_proxy: Fix ProxyPassInterpolateEnv directive. PR 50292. + [Stefan Fritsch] + + *) suEXEC: Add Suexec directive to disable suEXEC without renaming the + binary (Suexec Off), or force startup failure if suEXEC is required + but not supported (Suexec On). Change SuexecUserGroup to fail + startup instead of just printing a warning if suEXEC is disabled. + [Jeff Trawick] + + *) core: Add Error directive for aborting startup or htaccess processing + with a specified error message. [Jeff Trawick] + + *) mod_rewrite: Fix the RewriteEngine directive to work within a + location. Previously, once RewriteEngine was switched on globally, + it was impossible to switch off. [Graham Leggett] + + *) core, mod_include, mod_ssl: Move the expression parser derived from + mod_include back into mod_include. Replace ap_expr with a parser + derived from mod_ssl's parser. Make mod_ssl use the new parser. Rework + ap_expr's public interface and provide hooks for modules to add variables + and functions. [Stefan Fritsch] + + *) core: Do the hook sorting earlier so that the hooks are properly sorted + for the pre_config hook and during parsing the config. [Stefan Fritsch] + + *) core: In the absence of any AllowOverride directives, the default is now + "None" instead of "All". PR49823 [Eric Covener] + + *) mod_proxy: Don't allow ProxyPass or ProxyPassReverse in + <Directory> or <Files>. PR47765 [Eric Covener] + + *) prefork/worker/event MPMS: default value (when no directive is present) + of MaxConnectionsPerChild/MaxRequestsPerChild is changed to 0 from 10000 + to match default configuration and manual. PR47782 [Eric Covener] + + *) proxy_connect: Don't give up in the middle of a CONNECT tunnel + when the child process is starting to exit. PR50220. [Eric Covener] + + *) mod_autoindex: Fix inheritance of mod_autoindex directives into + contexts that don't have any mod_autoindex directives. PR47766. + [Eric Covener] + + *) mod_rewrite: Add END flag for RewriteRule to prevent further rounds + of rewrite processing when a per-directory substitution occurs. + [Eric Covener] + + *) mod_ssl: Make sure to always log an error if loading of CA certificates + fails. PR 40312. [Paul Tiemann <issues apache org ourdetour com>] + + *) mod_dav: Send 501 error if unknown Content-* header is received for a PUT + request (RFC 2616 9.6). PR 42978. [Stefan Fritsch] + + *) mod_dav: Send 400 error if malformed Content-Range header is received for + a put request (RFC 2616 14.16). PR 49825. [Stefan Fritsch] + + *) mod_proxy: Release the backend connection as soon as EOS is detected, + so the backend isn't forced to wait for the client to eventually + acknowledge the data. [Graham Leggett] + + *) mod_proxy: Optimise ProxyPass within a Location so that it is stored + per-directory, and chosen during the location walk. Make ProxyPass + work correctly from within a LocationMatch. [Graham Leggett] + + *) core: Fix segfault if per-module LogLevel is on virtual host + scope. PR 50117. [Stefan Fritsch] + + *) mod_proxy: Move the ProxyErrorOverride directive to have per + directory scope. [Graham Leggett] + + *) mod_allowmethods: New module to deny certain HTTP methods without + interfering with authentication/authorization. [Paul Querna, + Igor Galić, Stefan Fritsch] + + *) mod_ssl: Log certificate information and improve error message if client + cert verification fails. PR 50093, PR 50094. [Lassi Tuura <lat cern ch>, + Stefan Fritsch] + + *) htcacheclean: Teach htcacheclean to limit cache size by number of + inodes in addition to size of files. Prevents a cache disk from + running out of space when many small files are cached. + [Graham Leggett] + + *) core: Rename MaxRequestsPerChild to MaxConnectionsPerChild, which + describes more accurately what the directive does. The old name + still works but logs a warning. [Stefan Fritsch] + + *) mod_cache: Optionally serve stale data when a revalidation returns a + 5xx response, controlled by the CacheStaleOnError directive. + [Graham Leggett] + + *) htcacheclean: Allow the listing of valid URLs within the cache, with + the option to list entry metadata such as sizes and times. [Graham + Leggett] + + *) mod_cache: correctly parse quoted strings in cache headers. + PR 50199 [Nick Kew] + + *) mod_cache: Allow control over the base URL of reverse proxied requests + using the CacheKeyBaseURL directive, so that the cache key can be + calculated from the endpoint URL instead of the server URL. [Graham + Leggett] + + *) mod_cache: CacheLastModifiedFactor, CacheStoreNoStore, CacheStorePrivate, + CacheStoreExpired, CacheIgnoreNoLastMod, CacheDefaultExpire, + CacheMinExpire and CacheMaxExpire can be set per directory/location. + [Graham Leggett] + + *) mod_disk_cache: CacheMaxFileSize, CacheMinFileSize, CacheReadSize and + CacheReadTime can be set per directory/location. [Graham Leggett] + + *) core: Speed up config parsing if using a very large number of config + files. PR 50002 [andrew cloudaccess net] + + *) mod_cache: Support the caching of HEAD requests. [Graham Leggett] + + *) htcacheclean: Allow the option to round up file sizes to a given + block size, improving the accuracy of disk usage. [Graham Leggett] + + *) mod_ssl: Add authz providers for use with mod_authz_core and its + RequireAny/RequireAll containers: 'ssl' (equivalent to SSLRequireSSL), + 'ssl-verify-client' (for use with 'SSLVerifyClient optional'), and + 'ssl-require' (expressions with same syntax as SSLRequire). + [Stefan Fritsch] + + *) mod_ssl: Make the ssl expression parser thread-safe. It now requires + bison instead of yacc. [Stefan Fritsch] + + *) mod_disk_cache: Change on-disk header file format to support the + link of the device/inode of the data file to the matching header + file, and to support the option of not writing a data file when + the data file is empty. [Graham Leggett] + + *) core/mod_unique_id: Add generate_log_id hook to allow to use + the ID generated by mod_unique_id as error log ID for requests. + [Stefan Fritsch] + + *) mod_cache: Make sure that we never allow a 304 Not Modified response + that we asked for to leak to the client should the 304 response be + uncacheable. PR45341 [Graham Leggett] + + *) mod_cache: Add the cache_status hook to register the final cache + decision hit/miss/revalidate. Add optional support for an X-Cache + and/or an X-Cache-Detail header to add the cache status to the + response. PR48241 [Graham Leggett] + + *) mod_authz_host: Add 'local' provider that matches connections originating + on the local host. PR 19938. [Stefan Fritsch] + + *) Event MPM: Fix crash accessing pollset on worker thread when child + process is exiting. [Jeff Trawick] + + *) core: For process invocation (cgi, fcgid, piped loggers and so forth) + pass the system library path (LD_LIBRARY_PATH or platform-specific + variables) along with the system PATH, by default. Both should be + overridden together as desired using PassEnv etc; see mod_env. + [William Rowe] + + *) mod_cache: Introduce CacheStoreExpired, to allow administrators to + capture a stale backend response, perform If-Modified-Since requests + against the backend, and serving from the cache all 304 responses. + This restores pre-2.2.4 cache behavior. [William Rowe] + + *) mod_rewrite: Introduce <=, >= string comparison operators, and integer + comparators -lt, -le, -eq, -ge, and -gt. To help bash users and drop + the ambiguity of the symlink test "-ltest", introduce -h or -L as + symlink test operators. [William Rowe] + + *) mod_cache: Give the cache provider the opportunity to choose to cache + or not cache based on the buckets present in the brigade, such as the + presence of a FILE bucket. + [Graham Leggett] + + *) mod_authz_core: Allow authz providers to check args while reading the + config and allow to cache parsed args. Move 'all' and 'env' authz + providers from mod_authz_host to mod_authz_core. Add 'method' authz + provider depending on the HTTP method. [Stefan Fritsch] + + *) mod_include: Move the request_rec within mod_include to be + exposed within include_ctx_t. [Graham Leggett] + + *) mod_include: Reinstate support for UTF-8 character sets by allowing a + variable being echoed or set to be decoded and then encoded as separate + steps. PR47686 [Graham Leggett] + + *) mod_cache: Add a discrete commit_entity() provider function within the + mod_cache provider interface which is called to indicate to the + provider that caching is complete, giving the provider the opportunity + to commit temporary files permanently to the cache in an atomic + fashion. Replace the inconsistent use of error cleanups with a formal + set of pool cleanups attached to a subpool, which is destroyed on error. + [Graham Leggett] + + *) mod_cache: Change the signature of the store_body() provider function + within the mod_cache provider interface to support an "in" brigade + and an "out" brigade instead of just a single input brigade. This + gives a cache provider the option to consume only part of the brigade + passed to it, rather than the whole brigade as was required before. + This fixes an out of memory and a request timeout condition that would + occur when the original document was a large file. Introduce + CacheReadSize and CacheReadTime directives to mod_disk_cache to control + the amount of data to attempt to cache at a time. [Graham Leggett] + + *) core: Add ErrorLogFormat to allow configuring error log format, including + additional information that is logged once per connection or request. Add + error log IDs for connections and request to allow correlating error log + lines and the corresponding access log entry. [Stefan Fritsch] + + *) core: Disable sendfile by default. [Stefan Fritsch] + + *) mod_cache: Check the request to determine whether we are allowed + to return cached content at all, and respect a "Cache-Control: + no-cache" header from a client. Previously, "no-cache" would + behave like "max-age=0". [Graham Leggett] + + *) mod_cache: Use a proper filter context to hold filter data instead + of misusing the per-request configuration. Fixes a segfault on trunk + when the normal handler is used. [Graham Leggett] + + *) mod_cgid: Log a warning if the ScriptSock path is truncated because + it is too long. PR 49388. [Stefan Fritsch] + + *) vhosts: Do not allow _default_ in NameVirtualHost, or mixing * + and non-* ports on NameVirtualHost, or multiple NameVirtualHost + directives for the same address:port, or NameVirtualHost + directives with no matching VirtualHosts, or multiple ip-based + VirtualHost sections for the same address:port. These were + previously accepted with a warning, but the behavior was + undefined. [Dan Poirier] + + *) mod_remoteip: Fix a segfault when using mod_remoteip in conjunction with + Allow/Deny. PR 49838. [Andrew Skalski <voltara gmail.com>] + + *) core: DirectoryMatch can now match on the end of line character ($), + and sub-directories of matched directories are no longer implicitly + matched. PR49809 [Eric Covener] + + *) Regexps: introduce new higher-level regexp utility including parsing + and executing perl-style regexp ops (e.g s/foo/bar/i) and regexp memory + [Nick Kew] + + *) Proxy: support setting source address. PR 29404 + [Multiple contributors iterating through bugzilla, + Aron Ujvari <xanco nikhok.hu>, Aleksey Midenkov <asm uezku.kemsu.ru>, + <dan listening-station.net; trunk version Nick Kew] + + *) HTTP protocol: return 400 not 503 if we have to abort due to malformed + chunked encoding. [Nick Kew] + +Changes with Apache 2.3.8 + + *) suexec: Support large log files. PR 45856. [Stefan Fritsch] + + *) core: Abort with sensible error message if no or more than one MPM is + loaded. [Stefan Fritsch] + + *) mod_proxy: Rename erroronstatus to failonstatus. + [Daniel Ruggeri <DRuggeri primary.net>] + + *) mod_dav_fs: Fix broken "creationdate" property. + Regression in version 2.3.7. [Rainer Jung] + +Changes with Apache 2.3.7 + + *) SECURITY: CVE-2010-1452 (cve.mitre.org) + mod_dav, mod_cache, mod_session: Fix Handling of requests without a path + segment. PR 49246 [Mark Drayton, Jeff Trawick] + + *) mod_ldap: Properly check the result returned by apr_ldap_init. PR 46076. + [Stefan Fritsch] + + *) mod_rewrite: Log errors if rewrite map files cannot be opened. PR 49639. + [Stefan Fritsch] + + *) mod_proxy_http: Support the 'ping' property for backend HTTP/1.1 servers + via leveraging 100-Continue as the initial "request". + [Jim Jagielski] + + *) core/mod_authz_core: Introduce new access_checker_ex hook that enables + mod_authz_core to bypass authentication if access should be allowed by + IP address/env var/... [Stefan Fritsch] + + *) core: Introduce note_auth_failure hook to allow modules to add support + for additional auth types. This makes ap_note_auth_failure() work with + mod_auth_digest again. PR 48807. [Stefan Fritsch] + + *) socache modules: return APR_NOTFOUND when a lookup is not found [Nick Kew] + + *) mod_authn_socache: new module [Nick Kew] + + *) configure: Add reallyall option for --enable-mods-shared. [Stefan Fritsch] + + *) Fix Windows build when using VC6. [Gregg L. Smith <lists glewis com>] + + *) mod_rewrite: Allow to set environment variables without explicitly + giving a value. [Rainer Jung] + + *) mod_rewrite: Remove superfluous EOL from rewrite logging. [Rainer Jung] + + *) mod_include: recognise "text/html; parameters" as text/html + PR 49616 [Andrey Chernov <ache nagual.pp.ru>] + + *) CGI vars: allow PATH to be set by SetEnv, consistent with LD_LIBRARY_PATH + PR 43906 [Nick Kew] + + *) Core: Extra robustness: don't try authz and segfault if authn + fails to set r->user. Log bug and return 500 instead. + PR 42995 [Nick Kew] + + *) HTTP protocol filter: fix handling of longer chunk extensions + PR 49474 [<tee.bee gmx.de>] + + *) Update SSL cipher suite and add example for SSLHonorCipherOrder. + [Lars Eilebrecht, Rainer Jung] + + *) move AddOutputFilterByType from core to mod_filter. This should + fix nasty side-effects that happen when content_type is set + more than once in processing a request, and make it fully + compatible with dynamic and proxied contents. [Nick Kew] + + *) mod_log_config: Implement logging for sub second timestamps and + request end time. [Rainer Jung] + +Changes with Apache 2.3.6 + + *) SECURITY: CVE-2009-3555 (cve.mitre.org) + mod_ssl: Comprehensive fix of the TLS renegotiation prefix injection + attack when compiled against OpenSSL version 0.9.8m or later. Introduces + the 'SSLInsecureRenegotiation' directive to reopen this vulnerability + and offer unsafe legacy renegotiation with clients which do not yet + support the new secure renegotiation protocol, RFC 5746. + [Joe Orton, and with thanks to the OpenSSL Team] + + *) SECURITY: CVE-2009-3555 (cve.mitre.org) + mod_ssl: A partial fix for the TLS renegotiation prefix injection attack + by rejecting any client-initiated renegotiations. Forcibly disable + keepalive for the connection if there is any buffered data readable. Any + configuration which requires renegotiation for per-directory/location + access control is still vulnerable, unless using OpenSSL >= 0.9.8l. + [Joe Orton, Ruediger Pluem, Hartmut Keil <Hartmut.Keil adnovum.ch>] + + *) SECURITY: CVE-2010-0408 (cve.mitre.org) + mod_proxy_ajp: Respond with HTTP_BAD_REQUEST when the body is not sent + when request headers indicate a request body is incoming; not a case of + HTTP_INTERNAL_SERVER_ERROR. [Niku Toivola <niku.toivola sulake.com>] + + *) SECURITY: CVE-2010-0425 (cve.mitre.org) + mod_isapi: Do not unload an isapi .dll module until the request + processing is completed, avoiding orphaned callback pointers. + [Brett Gervasoni <brettg senseofsecurity.com>, Jeff Trawick] + + *) core: Filter init functions are now run strictly once per request + before handler invocation. The init functions are no longer run + for connection filters. PR 49328. [Joe Orton] + + *) core: Adjust the output filter chain correctly in an internal + redirect from a subrequest, preserving filters from the main + request as necessary. PR 17629. [Joe Orton] + + *) mod_cache: Explicitly allow cache implementations to cache a 206 Partial + Response if they so choose to do so. Previously an attempt to cache a 206 + was arbitrarily allowed if the response contained an Expires or + Cache-Control header, and arbitrarily denied if both headers were missing. + [Graham Leggett] + + *) core: Add microsecond timestamp fractions, process id and thread id + to the error log. [Rainer Jung] + + *) configure: The "most" module set gets build by default. [Rainer Jung] + + *) configure: Building dynamic modules (DSO) by default. [Rainer Jung] + + *) configure: Fix broken VPATH build when using included APR. + [Rainer Jung] + + *) mod_session_crypto: Fix configure problem when building + with APR 2 and for VPATH builds with included APR. + [Rainer Jung] + + *) mod_session_crypto: API compatibility with APR 2 crypto and + APR Util 1.x crypto. [Rainer Jung] + + *) ab: Fix memory leak with -v2 and SSL. PR 49383. + [Pavel Kankovsky <peak argo troja mff cuni cz>] + + *) core: Add per-module and per-directory loglevel configuration. + Add some more trace logging. + mod_rewrite: Replace RewriteLog/RewriteLogLevel with trace log levels. + mod_ssl: Replace LogLevelDebugDump with trace log levels. + mod_ssl/mod_proxy*: Adjust loglevels to be less verbose at levels info + and debug. + mod_dumpio: Replace DumpIOLogLevel with trace log levels. + [Stefan Fritsch] + + *) mod_ldap: LDAP caching was suppressed (and ldap-status handler returns + title page only) when any mod_ldap directives were used in VirtualHost + context. [Eric Covener] + + *) mod_disk_cache: Decline the opportunity to cache if the response is + a 206 Partial Content. This stops a reverse proxied partial response + from becoming cached, and then being served in subsequent responses. + [Graham Leggett] + + *) mod_deflate: avoid the risk of forwarding data before headers are set. + PR 49369 [Matthew Steele <mdsteele google.com>] + + *) mod_authnz_ldap: Ensure nested groups are checked when the + top-level group doesn't have any direct non-group members + of attributes in AuthLDAPGroupAttribute. [Eric Covener] + + *) mod_authnz_ldap: Search or Comparison during authorization phase + can use the credentials from the authentication phase + (AuthLDAPSearchAsUSer,AuthLDAPCompareAsUser). + PR 48340 [Domenico Rotiroti, Eric Covener] + + *) mod_authnz_ldap: Allow the initial DN search during authentication + to use the HTTP username/pass instead of an anonymous or hard-coded + LDAP id (AuthLDAPInitialBindAsUser, AuthLDAPInitialBindPattern). + [Eric Covener] + + *) mod_authnz_ldap: Publish requested LDAP data with an AUTHORIZE_ prefix + when this module is used for authorization. See AuthLDAPAuthorizePrefix. + PR 45584 [Eric Covener] + + *) apxs -q: Stop filtering out ':' characters from the reported values. + PR 45343. [Bill Cole] + + *) prefork MPM: Work around possible crashes on child exit in APR reslist + cleanup code. PR 43857. [Tom Donovan] + + *) ab: fix number of requests sent by ab when keepalive is enabled. PR 48497. + [Bryn Dole <dole blekko.com>] + + *) Log an error for failures to read a chunk-size, and return 408 instead of + 413 when this is due to a read timeout. This change also fixes some cases + of two error documents being sent in the response for the same scenario. + [Eric Covener] PR49167 + + *) mod_proxy_balancer: Add new directive BalancerNonce to allow admin + to control/set the nonce used in the balancer-manager application. + [Jim Jagielski] + + *) mod_proxy_connect: Support port ranges in AllowConnect. PR 23673. + [Stefan Fritsch] + + *) Proxy balancer: support setting error status according to HTTP response + code from a backend. PR 48939. [Daniel Ruggeri <DRuggeri primary.net>] + + *) htcacheclean: Introduce the ability to clean specific URLs from the + cache, if provided as an optional parameter on the command line. + [Graham Leggett] + + *) core: Introduce the IncludeStrict directive, which explicitly fails + server startup if no files or directories match a wildcard path. + [Graham Leggett] + + *) htcacheclean: Report additional statistics about entries deleted. + PR 48944. [Mark Drayton mark markdrayton.info] + + *) Introduce SSLFIPS directive to support OpenSSL FIPS_mode; permits all + builds of mod_ssl to use 'SSLFIPS off' for portability, but the proper + build of openssl is required for 'SSLFIPS on'. PR 46270. + [Dr Stephen Henson <steve openssl.org>, William Rowe] + + *) mod_proxy_http: Log the port of the remote server in various messages. + PR 48812. [Igor Galić <i galic brainsware org>] + + *) mod_reqtimeout: Do not wrongly enforce timeouts for mod_proxy's backend + connections and other protocol handlers (like mod_ftp). [Stefan Fritsch] + + *) mod_proxy_ajp: Really regard the operation a success, when the client + aborted the connection. In addition adjust the log message if the client + aborted the connection. [Ruediger Pluem] + + *) mod_ssl: Add the 'SSLInsecureRenegotiation' directive, which + allows insecure renegotiation with clients which do not yet + support the secure renegotiation protocol. [Joe Orton] + + *) mod_ssl: Fix a potential I/O hang if a long list of trusted CAs + is configured for client cert auth. PR 46952. [Joe Orton] + + *) core: Only log a 408 if it is no keepalive timeout. PR 39785 + [Ruediger Pluem, Mark Montague <markmont umich.edu>] + + *) support/rotatelogs: Add -L option to create a link to the current + log file. PR 48761 [<lyndon orthanc.ca>, Dan Poirier] + + *) mod_ldap: Update LDAPTrustedClientCert to consistently be a per-directory + setting only, matching most of the documentation and examples. + PR 46541 [Paul Reder, Eric Covener] + + *) mod_ldap: LDAPTrustedClientCert now accepts CA_DER/CA_BASE64 argument + types previously allowed only in LDAPTrustedGlobalCert. [Eric Covener] + + *) mod_negotiation: Preserve query string over multiviews negotiation. + This buglet was fixed for type maps in 2.2.6, but the same issue + affected multiviews and was overlooked. + PR 33112 [Joergen Thomsen <apache jth.net>] + + *) mod_ldap: Eliminate a potential crash with multiple LDAPTrustedClientCert + when some are not password-protected. [Eric Covener] + + *) Fix startup segfault when the Mutex directive is used but no loaded + modules use httpd mutexes. PR 48787. [Jeff Trawick] + + *) Proxy: get the headers right in a HEAD request with + ProxyErrorOverride, by checking for an overridden error + before not after going into a catch-all code path. + PR 41646. [Nick Kew, Stuart Children] + + *) support/rotatelogs: Support the simplest log rotation case, log + truncation. Useful when the log is being processed in real time + using a command like tail. [Graham Leggett] + + *) support/htcacheclean: Teach it how to write a pid file (modelled on + httpd's writing of a pid file) so that it becomes possible to run + more than one instance of htcacheclean on the same machine. + [Graham Leggett] + + *) Log command line on startup, so there's a record of command line + arguments like -f. PR 48752. [Dan Poirier] + + *) Introduce mod_reflector, a handler capable of reflecting POSTed + request bodies back within the response through the output filter + stack. Can be used to turn an output filter into a web service. + [Graham Leggett] + + *) mod_proxy_http: Make sure that when an ErrorDocument is served + from a reverse proxied URL, that the subrequest respects the status + of the original request. This brings the behaviour of proxy_handler + in line with default_handler. PR 47106. [Graham Leggett] + + *) Support wildcards in both the directory and file components of + the path specified by the Include directive. [Graham Leggett] + + *) mod_proxy, mod_proxy_http: Support remote https proxies + by using HTTP CONNECT. PR 19188. + [Philippe Dutrueux <lilas evidian.com>, Rainer Jung] + + *) apxs: Fix -A and -a options to ignore whitespace in httpd.conf + [Philip M. Gollucci] + + *) worker: Don't report server has reached MaxClients until it has. + Add message when server gets within MinSpareThreads of MaxClients. + PR 46996. [Dan Poirier] + + *) mod_session: Session expiry was being initialised, but not updated + on each session save, resulting in timed out sessions when there + should not have been. Fixed. [Graham Leggett] + + *) mod_log_config: Add the R option to log the handler used within the + request. [Christian Folini <christian.folini netnea com>] + + *) mod_include: Allow fine control over the removal of Last-Modified and + ETag headers within the INCLUDES filter, making it possible to cache + responses if desired. Fix the default value of the SSIAccessEnable + directive. [Graham Leggett] + + *) Add new UnDefine directive to undefine a variable. PR 35350. + [Stefan Fritsch] + + *) Make ap_pregsub(), used by AliasMatch and friends, use the same syntax + for regex backreferences as mod_rewrite and mod_include: Remove the use + of '&' as an alias for '$0' and allow to escape any character with a + backslash. PR 48351. [Stefan Fritsch] + + *) mod_authnz_ldap: If AuthLDAPCharsetConfig is set, also convert the + password to UTF-8. PR 45318. + [Johannes Müller <joh_m gmx.de>, Stefan Fritsch] + + *) ab: Fix calculation of requests per second in HTML output. PR 48594. + [Stefan Fritsch] + + *) mod_authnz_ldap: Failures to map a username to a DN, or to check a user + password now result in an informational level log entry instead of + warning level. [Eric Covener] + +Changes with Apache 2.3.5 + + *) SECURITY: CVE-2010-0434 (cve.mitre.org) + Ensure each subrequest has a shallow copy of headers_in so that the + parent request headers are not corrupted. Eliminates a problematic + optimization in the case of no request body. PR 48359 + [Jake Scott, William Rowe, Ruediger Pluem] + + *) Turn static function get_server_name_for_url() into public + ap_get_server_name_for_url() and use it where appropriate. This + fixes mod_rewrite generating invalid URLs for redirects to IPv6 + literal addresses. [Stefan Fritsch] + + *) mod_ldap: Introduce new config option LDAPTimeout to set the timeout + for LDAP operations like bind and search. [Stefan Fritsch] + + *) mod_proxy, mod_proxy_ftp: Move ProxyFtpDirCharset from mod_proxy to + mod_proxy_ftp. [Takashi Sato] + + *) mod_proxy, mod_proxy_connect: Move AllowCONNECT from mod_proxy to + mod_proxy_connect. [Takashi Sato] + + *) mod_cache: Do an exact match of the keys defined by + CacheIgnoreURLSessionIdentifiers against the querystring instead of + a partial match. PR 48401. + [Dodou Wang <wangdong.08 gmail.com>, Ruediger Pluem] + + *) mod_proxy_balancer: Fix crash in balancer-manager. [Rainer Jung] + + *) Core HTTP: disable keepalive when the Client has sent + Expect: 100-continue + but we respond directly with a non-100 response. + Keepalive here led to data from clients continuing being treated as + a new request. + PR 47087 [Nick Kew] + + *) Core: reject NULLs in request line or request headers. + PR 43039 [Nick Kew] + + *) Core: (re)-introduce -T commandline option to suppress documentroot + check at startup. + PR 41887 [Jan van den Berg <janvdberg gmail.com>] + + *) mod_autoindex: support XHTML as equivalent to HTML in IndexOptions, + ScanHTMLTitles, ReadmeName, HeaderName + PR 48416 [Dmitry Bakshaev <dab18 izhnet.ru>, Nick Kew] + + *) Proxy: Fix ProxyPassReverse with relative URL + Derived (slightly erroneously) from PR 38864 [Nick Kew] + + *) mod_headers: align Header Edit with Header Set when used on Content-Type + PR 48422 [Cyril Bonté <cyril.bonte free.fr>, Nick Kew>] + + *) mod_headers: Enable multi-match-and-replace edit option + PR 46594 [Nick Kew] + + *) mod_filter: enable it to act on non-200 responses. + PR 48377 [Nick Kew] + +Changes with Apache 2.3.4 + + *) Replace AcceptMutex, LockFile, RewriteLock, SSLMutex, SSLStaplingMutex, + and WatchdogMutexPath with a single Mutex directive. Add APIs to + simplify setup and user customization of APR proc and global mutexes. + (See util_mutex.h.) Build-time setting DEFAULT_LOCKFILE is no longer + respected; set DEFAULT_REL_RUNTIMEDIR instead. [Jeff Trawick] + + *) http_core: KeepAlive no longer accepts other than On|Off. + [Takashi Sato] + + *) mod_dav: Remove errno from dav_error interface. Calls to dav_new_error() + and dav_new_error_tag() must be adjusted to add an apr_status_t parameter. + [Jeff Trawick] + + *) mod_authnz_ldap: Add AuthLDAPBindAuthoritative to allow Authentication to + try other providers in the case of an LDAP bind failure. + PR 46608 [Justin Erenkrantz, Joe Schaefer, Tony Stevenson] + + *) Build: fix --with-module to work as documented + PR 43881 [Gez Saunders <gez.saunders virgin.net>] + +Changes with Apache 2.3.3 + + *) SECURITY: CVE-2009-3095 (cve.mitre.org) + mod_proxy_ftp: sanity check authn credentials. + [Stefan Fritsch <sf fritsch.de>, Joe Orton] + + *) SECURITY: CVE-2009-3094 (cve.mitre.org) + mod_proxy_ftp: NULL pointer dereference on error paths. + [Stefan Fritsch <sf fritsch.de>, Joe Orton] + + *) mod_ssl: enable support for ECC keys and ECDH ciphers. Tested against + OpenSSL 1.0.0b3. [Vipul Gupta <vipul.gupta sun.com>, Sander Temme] + + *) mod_dav: Include uri when logging a PUT error due to connection abort. + PR 38149. [Stefan Fritsch] + + *) mod_dav: Return 409 instead of 500 for a LOCK request if the parent + resource does not exist or is not a collection. PR 43465. [Stefan Fritsch] + + *) mod_dav_fs: Return 409 instead of 500 for Litmus test case copy_nodestcoll + (a COPY request where the parent of the destination resource does not + exist). PR 39299. [Stefan Fritsch] + + *) mod_dav_fs: Don't delete the whole file if a PUT with content-range failed. + PR 42896. [Stefan Fritsch] + + *) mod_dav_fs: Make PUT create files atomically and no longer destroy the + old file if the transfer aborted. PR 39815. [Paul Querna, Stefan Fritsch] + + *) mod_dav_fs: Remove inode keyed locking as this conflicts with atomically + creating files. On systems with inode numbers, this is a format change of + the DavLockDB. The old DavLockDB must be deleted on upgrade. + [Stefan Fritsch] + + *) mod_log_config: Make ${cookie}C correctly match whole cookie names + instead of substrings. PR 28037. [Dan Franklin <dan dan-franklin.com>, + Stefan Fritsch] + + *) vhost: A purely-numeric Host: header should not be treated as a port. + PR 44979 [Nick Kew] + + *) mod_ldap: Avoid 500 errors with "Unable to set LDAP_OPT_REFHOPLIMIT option to 5" + when built against openldap by using SDK LDAP_OPT_REFHOPLIMIT defaults unless + LDAPReferralHopLimit is explicitly configured. + [Eric Covener] + + *) mod_charset_lite: Honor 'CharsetOptions NoImplicitAdd'. + [Eric Covener] + + *) mod_ssl: Add support for OCSP Stapling. PR 43822. + [Dr Stephen Henson <shenson oss-institute.org>] + + *) mod_socache_shmcb: Allow parens in file name if cache size is given. + Fixes SSLSessionCache directive mis-parsing parens in pathname. + PR 47945. [Stefan Fritsch] + + *) htpasswd: Improve out of disk space handling. PR 30877. [Stefan Fritsch] + + *) htpasswd: Use MD5 hash by default on all platforms. [Stefan Fritsch] + + *) mod_sed: Reduce memory consumption when processing very long lines. + PR 48024 [Basant Kumar Kukreja <basant.kukreja sun.com>] + + *) ab: Fix segfault in case the argument for -n is a very large number. + PR 47178. [Philipp Hagemeister <oss phihag.de>] + + *) Allow ProxyPreserveHost to work in <Proxy> sections. PR 34901. + [Stefan Fritsch] + + *) configure: Fix THREADED_MPMS so that mod_cgid is enabled again + for worker MPM. [Takashi Sato] + + *) mod_dav: Provide a mechanism to obtain the request_rec and pathname + from the dav_resource. [Jari Urpalainen <jari.urpalainen nokia.com>, + Brian France <brian brianfrance.com>] + + *) Build: Use install instead of cp if available on installing + modules to avoid segmentation fault. PR 47951. [hirose31 gmail.com] + + *) mod_cache: correctly consider s-maxage in cacheability + decisions. [Dan Poirier] + + *) mod_logio/core: Report more accurate byte counts in mod_status if + mod_logio is loaded. PR 25656. [Stefan Fritsch] + + *) mod_ldap: If LDAPSharedCacheSize is too small, try harder to purge + some cache entries and log a warning. Also increase the default + LDAPSharedCacheSize to 500000. This is a more realistic size suitable + for the default values of 1024 for LdapCacheEntries/LdapOpCacheEntries. + PR 46749. [Stefan Fritsch] + + *) mod_rewrite: Make sure that a hostname:port isn't fully qualified if + the request is a CONNECT request. [Bill Zajac <billz consultla.com>] + + *) mod_cache: Teach CacheEnable and CacheDisable to work from within a + Location section, in line with how ProxyPass works. [Graham Leggett] + + *) mod_reqtimeout: New module to set timeouts and minimum data rates for + receiving requests from the client. [Stefan Fritsch] + + *) core: Fix potential memory leaks by making sure to not destroy + bucket brigades that have been created by earlier filters. + [Stefan Fritsch] + + *) core, mod_deflate, mod_sed: Reduce memory usage by reusing bucket + brigades in several places. [Stefan Fritsch] + + *) mod_cache: Fix uri_meets_conditions() so that CacheEnable will + match by scheme, or by a wildcarded hostname. PR 40169 + [Peter Grandi <pg_asf asf.for.sabi.co.uk>, Graham Leggett] + + *) suxec: Allow to log an error if exec fails by setting FD_CLOEXEC + on the log file instead of closing it. PR 10744. [Nicolas Rachinsky] + + *) mod_mime: Make RemoveType override the info from TypesConfig. + PR 38330. [Stefan Fritsch] + + *) mod_cache: Introduce the option to run the cache from within the + normal request handler, and to allow fine grained control over + where in the filter chain content is cached. Adds CacheQuickHandler + directive. [Graham Leggett] + + *) core: Treat timeout reading request as 408 error, not 400. + Log 408 errors in access log as was done in Apache 1.3.x. + PR 39785 [Nobutaka Mantani <nobutaka nobutaka.org>, + Stefan Fritsch <sf fritsch.de>, Dan Poirier] + + *) mod_ssl: Reintroduce SSL_CLIENT_S_DN, SSL_CLIENT_I_DN, SSL_SERVER_S_DN, + SSL_SERVER_I_DN back to the environment variables to be set by mod_ssl. + [Peter Sylvester <peter.sylvester edelweb.fr>] + + *) mod_disk_cache: don't cache incomplete responses, per RFC 2616, 13.8. + PR15866. [Dan Poirier] + + *) ab: ab segfaults in verbose mode on https sites + PR46393. [Ryan Niebur] + + *) mod_dav: Allow other modules to become providers and add resource types + to the DAV response. [Jari Urpalainen <jari.urpalainen nokia.com>, + Brian France <brian brianfrance.com>] + + *) mod_dav: Allow other modules to add things to the DAV or Allow headers + of an OPTIONS request. [Jari Urpalainen <jari.urpalainen nokia.com>, + Brian France <brian brianfrance.com>] + + *) core: Lower memory usage of core output filter. + [Stefan Fritsch <sf sfritsch.de>] + + *) mod_mime: Detect invalid use of MultiviewsMatch inside Location and + LocationMatch sections. PR47754. [Dan Poirier] + + *) mod_request: Make sure the KeptBodySize directive rejects values + that aren't valid numbers. [Graham Leggett] + + *) mod_session_crypto: Sanity check should the potentially encrypted + session cookie be too short. [Graham Leggett] + + *) mod_session.c: Prevent a segfault when session is added but not + configured. [Graham Leggett] + + *) htcacheclean: 19 ways to fail, 1 error message. Fixed. [Graham Leggett] + + *) mod_auth_digest: Fail server start when nonce count checking + is configured without shared memory, or md5-sess algorithm is + configured. [Dan Poirier] + + *) mod_proxy_connect: The connect method doesn't work if the client is + connecting to the apache proxy through an ssl socket. Fixed. + PR29744. [Brad Boyer, Mark Cave-Ayland, Julian Gilbey, Fabrice Durand, + David Gence, Tim Dodge, Per Gunnar Hans, Emmanuel Elango, + Kevin Croft, Rudolf Cardinal] + + *) mod_ssl: The error message when SSLCertificateFile is missing should + at least give the name or position of the problematic virtual host + definition. [Stefan Fritsch sf sfritsch.de] + + *) mod_auth_digest: Fix null pointer when qop=none. [Dan Poirier] + + *) Add support for HTTP PUT to ab. [Jeff Barnes <jbarnesweb yahoo.com>] + + *) mod_headers: generalise the envclause to support expression + evaluation with ap_expr parser [Nick Kew] + + *) mod_cache: Introduce the thundering herd lock, a mechanism to keep + the flood of requests at bay that strike a backend webserver as + a cached entity goes stale. [Graham Leggett] + + *) mod_auth_digest: Fix usage of shared memory and re-enable it. + PR 16057 [Dan Poirier] + + *) Preserve Port information over internal redirects + PR 35999 [Jonas Ringh <jonas.ringh cixit.se>] + + *) Proxy: unable to connect to a backend is SERVICE_UNAVAILABLE, + rather than BAD_GATEWAY or (especially) NOT_FOUND. + PR 46971 [evanc nortel.com] + + *) Various modules: Do better checking of pollset operations in order to + avoid segmentation faults if they fail. PR 46467 + [Stefan Fritsch <sf sfritsch.de>] + + *) mod_autoindex: Correctly create an empty cell if the description + for a file is missing. PR 47682 [Peter Poeml <poeml suse.de>] + + *) ab: Fix broken error messages after resolver or connect() failures. + [Jeff Trawick] + + *) SECURITY: CVE-2009-1890 (cve.mitre.org) + Fix a potential Denial-of-Service attack against mod_proxy in a + reverse proxy configuration, where a remote attacker can force a + proxy process to consume CPU time indefinitely. [Nick Kew, Joe Orton] + + *) SECURITY: CVE-2009-1191 (cve.mitre.org) + mod_proxy_ajp: Avoid delivering content from a previous request which + failed to send a request body. PR 46949 [Ruediger Pluem] + + *) htdbm: Fix possible buffer overflow if dbm database has very + long values. PR 30586 [Dan Poirier] + + *) core: Return APR_EOF if request body is shorter than the length announced + by the client. PR 33098 [ Stefan Fritsch <sf sfritsch.de>] + + *) mod_suexec: correctly set suexec_enabled when httpd is run by a + non-root user and may have insufficient permissions. + PR 42175 [Jim Radford <radford blackbean.org>] + + *) mod_ssl: Fix SSL_*_DN_UID variables to use the 'userID' attribute + type. PR 45107. [Michael Ströder <michael stroeder.com>, + Peter Sylvester <peter.sylvester edelweb.fr>] + + *) mod_proxy_http: fix case sensitivity checking transfer encoding + PR 47383 [Ryuzo Yamamoto <ryuzo.yamamoto gmail.com>] + + *) mod_alias: ensure Redirect issues a valid URL. + PR 44020 [Håkon Stordahl <hakon stordahl.org>] + + *) mod_dir: add FallbackResource directive, to enable admin to specify + an action to happen when a URL maps to no file, without resorting + to ErrorDocument or mod_rewrite. PR 47184 [Nick Kew] + + *) mod_cgid: Do not leak the listening Unix socket file descriptor to the + CGI process. PR 47335 [Kornél Pál <kornelpal gmail.com>] + + *) mod_rewrite: Remove locking for writing to the rewritelog. + PR 46942 [Dan Poirier <poirier pobox.com>] + + *) mod_alias: check sanity in Redirect arguments. + PR 44729 [Sönke Tesch <st kino-fahrplan.de>, Jim Jagielski] + + *) mod_proxy_http: fix Host: header for literal IPv6 addresses. + PR 47177 [Carlos Garcia Braschi <cgbraschi gmail.com>] + + *) mod_cache: Add CacheIgnoreURLSessionIdentifiers directive to ignore + defined session identifiers encoded in the URL when caching. + [Ruediger Pluem] + + *) mod_rewrite: Fix the error string returned by RewriteRule. + RewriteRule returned "RewriteCond: bad flag delimiters" when the 3rd + argument of RewriteRule was not started with "[" or not ended with "]". + PR 45082 [Vitaly Polonetsky <m_vitaly topixoft.com>] + + *) Windows: Fix usage message. + [Rainer Jung] + + *) apachectl: When passing through arguments to httpd in + non-SysV mode, use the "$@" syntax to preserve arguments. + [Eric Covener] + + *) mod_dbd: add DBDInitSQL directive to enable SQL statements to + be run when a connection is opened. PR 46827 + [Marko Kevac <mkevac gmail.com>] + + *) mod_cgid: Improve handling of long AF_UNIX socket names (ScriptSock). + PR 47037. [Jeff Trawick] + + *) mod_proxy_ajp: Check more strictly that the backend follows the AJP + protocol. [Mladen Turk] + + *) mod_proxy_ajp: Forward remote port information by default. + [Rainer Jung] + + *) Allow MPMs to be loaded dynamically, as with most other modules. Use + --enable-mpms-shared={list|"all"} to enable. This required changes to + the MPM interfaces. Removed: mpm.h, mpm_default.h (as an installed + header), APACHE_MPM_DIR, MPM_NAME, ap_threads_per_child, + ap_max_daemons_limit, ap_my_generation, etc. ap_mpm_query() can't be + called until after the register-hooks phase. [Jeff Trawick] + + *) mod_ssl: Add SSLProxyCheckPeerExpire and SSLProxyCheckPeerCN directives + to enable stricter checking of remote server certificates. + [Ruediger Pluem] + + *) ab: Fix a 100% CPU loop on platforms where a failed non-blocking connect + returns EINPROGRESS and a subsequent poll() returns only POLLERR. + Observed on HP-UX. [Eric Covener] + + *) Remove broken support for BeOS, TPF, and even older platforms such + as A/UX, Next, and Tandem. [Jeff Trawick] + + *) mod_proxy_ftp: Add ProxyFtpListOnWildcard directive to allow files with + globbing characters to be retrieved instead of converted into a + directory listing. PR 46789 [Dan Poirier <poirier pobox.com>] + + *) Provide ap_retained_data_create()/ap_retained_data_get() for preservation + of module state across unload/load. [Jeff Trawick] + + *) mod_substitute: Fix a memory leak. PR 44948 + [Dan Poirier <poirier pobox.com>] + +Changes with Apache 2.3.2 + + *) mod_mime_magic: Fix detection of compressed content. [Rainer Jung] + + *) mod_negotiation: Escape paths of filenames in 406 responses to avoid + HTML injections and HTTP response splitting. PR 46837. + [Geoff Keating <geoffk apple.com>] + + *) mod_ssl: add support for type-safe STACK constructs in OpenSSL + development HEAD. PR 45521. [Kaspar Brand, Sander Temme] + + *) ab: Fix maintenance of the pollset to resolve EALREADY errors + with kqueue (BSD/OS X) and excessive CPU with event ports (Solaris). + PR 44584. Use APR_POLLSET_NOCOPY for better performance with some + pollset implementations. [Jeff Trawick] + + *) mod_disk_cache: The module now turns off sendfile support if + 'EnableSendfile off' is defined globally. [Lars Eilebrecht] + + *) mod_deflate: Adjust content metadata before bailing out on 304 + responses so that the metadata does not differ from 200 response. + [Roy T. Fielding] + + *) mod_deflate: Fix creation of invalid Etag headers. We now make sure + that the Etag value is properly quoted when adding the gzip marker. + PR 39727, 45023. [Lars Eilebrecht, Roy T. Fielding] + + *) Added 20x22 icons for ODF, SVG, and XML documents. PR 37185. + [Peter Harlow] + + *) Disabled DefaultType directive and removed ap_default_type() + from core. We now exclude Content-Type from responses for which + a media type has not been configured via mime.types, AddType, + ForceType, or some other mechanism. PR 13986. [Roy T. Fielding] + + *) mod_rewrite: Add IPV6 variable to RewriteCond + [Ryan Phillips <ryan-apache trolocsis.com>] + + *) core: Enhance KeepAliveTimeout to support a value in milliseconds. + PR 46275. [Takashi Sato] + + *) rotatelogs: Allow size units B, K, M, G and combination of + time and size based rotation. [Rainer Jung] + + *) rotatelogs: Add flag for verbose (debug) output. [Rainer Jung] + + *) mod_ssl: Fix merging of SSLRenegBufferSize directive. PR 46508 + [<tlhackque yahoo.com>] + + *) core: Translate the the status line to ASCII on EBCDIC platforms in + ap_send_interim_response() and for locally generated "100 Continue" + responses. [Eric Covener] + + *) prefork: Fix child process hang during graceful restart/stop in + configurations with multiple listening sockets. PR 42829. [Joe Orton, + Jeff Trawick] + + *) mod_session_crypto: Ensure that SessionCryptoDriver can only be + set in the global scope. [Graham Leggett] + + *) mod_ext_filter: We need to detect failure to startup the filter + program (a mangled response is not acceptable). Fix to detect + failure, and offer configuration option either to abort or + to remove the filter and continue. + PR 41120 [Nick Kew] + + *) mod_session_crypto: Rewrite the session_crypto module against the + apr_crypto API. [Graham Leggett] + + *) mod_auth_form: Fix a pool lifetime issue, don't remove the subrequest + until the main request is cleaned up. [Graham Leggett] + +Changes with Apache 2.3.1 + + *) ap_slotmem: Add in new slot-based memory access API impl., including + 2 providers (mod_sharedmem and mod_plainmem) [Jim Jagielski, + Jean-Frederic Clere, Brian Akins <brian.akins turner.com>] + + *) mod_include: support generating non-ASCII characters as entities in SSI + PR 25202 [Nick Kew] + + *) core/utils: Enhance ap_escape_html API to support escaping non-ASCII chars + PR 25202 [Nick Kew] + + *) mod_rewrite: fix "B" flag breakage by reverting r5589343 + PR 45529 [Bob Ionescu <bobsiegen googlemail.com>] + + *) CGI: return 504 (Gateway timeout) rather than 500 when a script + times out before returning status line/headers. + PR 42190 [Nick Kew] + + *) mod_cgid: fix segfault problem on solaris. + PR 39332 [Masaoki Kobayashi <masaoki techfirm.co.jp>] + + *) mod_proxy_scgi: Added. [André Malo] + + *) mod_cache: Introduce 'no-cache' per-request environment variable + to prevent the saving of an otherwise cacheable response. + [Eric Covener] + + *) mod_rewrite: Introduce DiscardPathInfo|DPI flag to stop the troublesome + way that per-directory rewrites append the previous notion of PATH_INFO + to each substitution before evaluating subsequent rules. + PR 38642 [Eric Covener] + + *) mod_cgid: Do not add an empty argument when calling the CGI script. + PR 46380 [Ruediger Pluem] + + *) scoreboard: Remove unused sb_type from process_score. + [Torsten Foertsch <torsten.foertsch gmx.net>, Chris Darroch] + + *) mod_ssl: Add SSLRenegBufferSize directive to allow changing the + size of the buffer used for the request-body where necessary + during a per-dir renegotiation. PR 39243. [Joe Orton] + + *) mod_proxy_fdpass: New module to pass a client connection over to a separate + process that is reading from a unix daemon socket. + + *) mod_ssl: Improve environment variable extraction to be more + efficient and to correctly handle DNs with duplicate tags. + PR 45975. [Joe Orton] + + *) Remove the obsolete serial attribute from the RPM spec file. Compile + against the external pcre. Add missing binaries fcgistarter, and + mod_socache* and mod_session*. [Graham Leggett] + +Changes with Apache 2.3.0 + + *) mod_ratelimit: New module to do bandwidth rate limiting. [Paul Querna] + + *) Remove X-Pad header which was added as a work around to a bug in + Netscape 2.x to 4.0b2. [Takashi Sato <takashi lans-tv.com>] + + *) Add DTrace Statically Defined Tracing (SDT) probes. + [Theo Schlossnagle <jesus omniti.com>, Paul Querna] + + *) mod_proxy_balancer: Move all load balancing implementations + as individual, self-contained mod_proxy submodules under + modules/proxy/balancers [Jim Jagielski] + + *) Rename APIs to include ap_ prefix: + find_child_by_pid -> ap_find_child_by_pid + suck_in_APR -> ap_suck_in_APR + sys_privileges_handlers -> ap_sys_privileges_handlers + unixd_accept -> ap_unixd_accept + unixd_config -> ap_unixd_config + unixd_killpg -> ap_unixd_killpg + unixd_set_global_mutex_perms -> ap_unixd_set_global_mutex_perms + unixd_set_proc_mutex_perms -> ap_unixd_set_proc_mutex_perms + unixd_set_rlimit -> ap_unixd_set_rlimit + [Paul Querna] + + *) mod_lbmethod_heartbeat: New module to load balance mod_proxy workers + based on heartbeats. [Paul Querna] + + *) mod_heartmonitor: New module to collect heartbeats, and write out a file + so that other modules can load balance traffic as needed. [Paul Querna] + + *) mod_heartbeat: New module to generate multicast heartbeats to know if a + server is online. [Paul Querna] + + *) mod_buffer: Honour the flush bucket and flush the buffer in the + input filter. Make sure that metadata buckets are written to + the buffer, not to the final brigade. [Graham Leggett] + + *) mod_buffer: Optimise the buffering of heap buckets when the heap + buckets stay exactly APR_BUCKET_BUFF_SIZE long. [Graham Leggett, + Ruediger Pluem] + + *) mod_buffer: Optional support for buffering of the input and output + filter stacks. Can collapse many small buckets into fewer larger + buckets, and prevents excessively small chunks being sent over + the wire. [Graham Leggett] + + *) mod_privileges: new module to make httpd on Solaris privileges-aware + and to enable different virtualhosts to run with different + privileges and Unix user/group IDs [Nick Kew] + + *) mod_mem_cache: this module has been removed. [William Rowe] + + *) authn/z: Remove mod_authn_default and mod_authz_default. + [Chris Darroch] + + *) authz: Fix handling of authz configurations, make default authz + logic replicate 2.2.x authz logic, and replace <Satisfy*>, Reject, + and AuthzMergeRules directives with Match, <Match*>, and AuthzMerge + directives. [Chris Darroch] + + *) mod_authn_core: Prevent crash when provider alias created to + provider which is not yet registered. [Chris Darroch] + + *) mod_authn_core: Add AuthType of None to support disabling + authentication. [Chris Darroch] + + *) core: Allow <Limit> and <LimitExcept> directives to nest, and + constrain their use to conform with that of other access control + and authorization directives. [Chris Darroch] + + *) unixd: turn existing code into a module, and turn the set user/group + and chroot into a child_init function. [Nick Kew] + + *) mod_dir: Support "DirectoryIndex disabled" + Suggested By André Warnier <aw ice-sa.com> [Eric Covener] + + *) mod_ssl: Send Content-Type application/ocsp-request for POST requests to + OSCP responders. PR 46014 [Dr Stephen Henson <steve openssl.org>] + + *) mod_authnz_ldap: don't return NULL-valued environment variables to + other modules. PR 39045 [Francois Pesce <francois.pesce gmail.com>] + + *) Don't adjust case in pathname components that are not of interest + to mod_mime. Fixes mod_negotiation's use of such components. + PR 43250 [Basant Kumar Kukreja <basant.kukreja sun.com>] + + *) Be tolerant in what you accept - accept slightly broken + status lines from a backend provided they include a valid status code. + PR 44995 [Rainer Jung <rainer.jung kippdata.de>] + + *) New module mod_sed: filter Request/Response bodies through sed + [Basant Kumar Kukreja <basant.kukreja sun.com>] + + *) mod_auth_form: Make sure that basic authentication is correctly + faked directly after login. [Graham Leggett] + + *) mod_session_cookie, mod_session_dbd: Make sure cookies are set both + within the output headers and error output headers, so that the + session is maintained across redirects. [Graham Leggett] + + *) mod_auth_form: Make sure the logged in user is populated correctly + after a form login. Fixes a missing REMOTE_USER variable directly + following a login. [Graham Leggett] + + *) mod_session_cookie: Make sure that cookie attributes are correctly + included in the blank cookie when cookies are removed. This fixes an + inability to log out when using mod_auth_form. [Graham Leggett] + + *) mod_session: Prevent a segfault when a CGI script sets a cookie with a + null value. [David Shane Holden <dpejesh apache.org>] + + *) core, authn/z: Determine registered authn/z providers directly in + ap_setup_auth_internal(), which allows optional functions that just + wrapped ap_list_provider_names() to be removed from authn/z modules. + [Chris Darroch] + + *) authn/z: Convert common provider version strings to macros. + [Chris Darroch] + + *) core: When testing for slash-terminated configuration paths in + ap_location_walk(), don't look past the start of an empty string + such as that created by a <Location ""> directive. + [Chris Darroch] + + *) core, mod_proxy: If a kept_body is present, it becomes safe for + subrequests to support message bodies. Make sure that safety + checks within the core and within the proxy are not triggered + when kept_body is present. This makes it possible to embed + proxied POST requests within mod_include. [Graham Leggett] + + *) mod_auth_form: Make sure the input filter stack is properly set + up before reading the login form. Make sure the kept body filter + is correctly inserted to ensure the body can be read a second + time safely should the authn be successful. [Graham Leggett, + Ruediger Pluem] + + *) mod_request: Insert the KEPT_BODY filter via the insert_filter + hook instead of during fixups. Add a safety check to ensure the + filters cannot be inserted more than once. [Graham Leggett, + Ruediger Pluem] + + *) ap_cache_cacheable_headers_out() will (now) always + merge an error headers _before_ clearing them and _before_ + merging in the actual entity headers and doing normal + hop-by-hop cleansing. [Dirk-Willem van Gulik]. + + *) cache: retire ap_cache_cacheable_hdrs_out() which was used + for both in- and out-put headers; and replace it by a single + ap_cache_cacheable_headers() wrapped in a in- and out-put + specific ap_cache_cacheable_headers_in()/out(). The latter + which will also merge error and ensure content-type. To keep + cache modules consistent with ease. This API change bumps + up the minor MM by one [Dirk-Willem van Gulik]. + + *) Move the KeptBodySize directive, kept_body filters and the + ap_parse_request_body function out of the http module and into a + new module called mod_request, reducing the size of the core. + [Graham Leggett] + + *) mod_dbd: Handle integer configuration directive parameters with a + dedicated function. + + *) Change the directives within the mod_session* modules to be valid + both inside and outside the location/directory sections, as + suggested by wrowe. [Graham Leggett] + + *) mod_auth_form: Add a module capable of allowing end users to log + in using an HTML form, storing the credentials within mod_session. + [Graham Leggett] + + *) Add a function to the http filters that is able to parse an HTML + form request with the type of application/x-www-form-urlencoded. + [Graham Leggett] + + *) mod_session_crypto: Initialise SSL in the post config hook. + [Ruediger Pluem, Graham Leggett] + + *) mod_session_dbd: Add a session implementation capable of storing + session information in a SQL database via the dbd interface. Useful + for sites where session privacy is important. [Graham Leggett] + + *) mod_session_crypto: Add a session encoding implementation capable + of encrypting and decrypting sessions wherever they may be stored. + Introduces a level of privacy when sessions are stored on the + browser. [Graham Leggett] + + *) mod_session_cookie: Add a session implementation capable of storing + session information within cookies on the browser. Useful for high + volume sites where server bound sessions are too resource intensive. + [Graham Leggett] + + *) mod_session: Add a generic session interface to unify the different + attempts at saving persistent sessions across requests. + [Graham Leggett] + + *) core, authn/z: Avoid calling access control hooks for internal requests + with configurations which match those of initial request. Revert to + original behaviour (call access control hooks for internal requests + with URIs different from initial request) if any access control hooks or + providers are not registered as permitting this optimization. + Introduce wrappers for access control hook and provider registration + which can accept additional mode and flag data. [Chris Darroch] + + *) Introduced ap_expr API for expression evaluation. + This is adapted from mod_include, which is the first module + to use the new API. + [Nick Kew] + + *) mod_authz_dbd: When redirecting after successful login/logout per + AuthzDBDRedirectQuery, do not report authorization failure, and use + first row returned by database query instead of last row. + [Chris Darroch] + + *) mod_ldap: Correctly return all requested attribute values + when some attributes have a null value. + PR 44560 [Anders Kaseorg <anders kaseorg.com>] + + *) core: check symlink ownership if both FollowSymlinks and + SymlinksIfOwnerMatch are set [Nick Kew] + + *) core: fix origin checking in SymlinksIfOwnerMatch + PR 36783 [Robert L Mathews <rob-apache.org.bugs tigertech.net>] + + *) Activate mod_cache, mod_file_cache and mod_disk_cache as part of the + 'most' set for '--enable-modules' and '--enable-shared-mods'. Include + mod_mem_cache in 'all' as well. [Dirk-Willem van Gulik] + + *) Also install mod_so.h, mod_rewrite.h and mod_cache.h; as these + contain public function declarations which are useful for + third party module authors. PR 42431 [Dirk-Willem van Gulik]. + + *) mod_dir, mod_negotiation: pass the output filter information + to newly created sub requests; as these are later on used + as true requests with an internal redirect. This allows for + mod_cache et.al. to trap the results of the redirect. + [Dirk-Willem van Gulik, Ruediger Pluem] + + *) mod_ldap: Add support (taking advantage of the new APR capability) + for ldap rebind callback while chasing referrals. This allows direct + searches on LDAP servers (in particular MS Active Directory 2003+) + using referrals without the use of the global catalog. + PRs 26538, 40268, and 42557 [Paul J. Reder] + + *) ApacheMonitor.exe: Introduce --kill argument for use by the + installer. This will permit the installation tool to remove + all running instances before attempting to remove the .exe. + [William Rowe] + + *) mod_ssl: Add support for OCSP validation of client certificates. + PR 41123. [Marc Stern <marc.stern approach.be>, Joe Orton] + + *) mod_serf: New module for Reverse Proxying. [Paul Querna] + + *) core: Add the option to keep aside a request body up to a certain + size that would otherwise be discarded, to be consumed by filters + such as mod_include. When enabled for a directory, POST requests + to shtml files can be passed through to embedded scripts as POST + requests, rather being downgraded to GET requests. [Graham Leggett] + + *) mod_ssl: Fix TLS upgrade (RFC 2817) support. PR 41231. [Joe Orton] + + *) scoreboard: Correctly declare ap_time_process_request. + PR 43789 [Tom Donovan <Tom.Donovan acm.org>] + + *) core; scoreboard: ap_get_scoreboard_worker(sbh) now takes the sbh member + from the connection rec, ap_get_scoreboard_worker(proc, thread) will now + provide the unusual legacy lookup. [William Rowe] + + *) mpm winnt: fix null pointer dereference + PR 42572 [Davi Arnaut] + + *) mod_authnz_ldap, mod_authn_dbd: Tidy up the code to expose authn + parameters to the environment. Improve portability to + EBCDIC machines by using apr_toupper(). [Martin Kraemer] + + *) mod_ldap, mod_authnz_ldap: Add support for nested groups (i.e. the ability + to authorize an authenticated user via a "require ldap-group X" directive + where the user is not in group X, but is in a subgroup contained in X. + PR 42891 [Paul J. Reder] + + *) mod_ssl: Add support for caching SSL Sessions in memcached. [Paul Querna] + + *) apxs: Enhance -q flag to print all known variables and their values + when invoked without variable name(s). + [William Rowe, Sander Temme] + + *) apxs: Eliminate run-time check for mod_so. PR 40653. + [David M. Lee <dmlee crossroads.com>] + + *) beos MPM: Create pmain pool and run modules' child_init hooks when + entering ap_mpm_run(), then destroy pmain when exiting ap_mpm_run(). + [Chris Darroch] + + *) netware MPM: Destroy pmain pool when exiting ap_mpm_run() so that + cleanups registered in modules' child_init hooks are performed. + [Chris Darroch] + + *) Fix issue which could cause error messages to be written to access logs + on Win32. PR 40476. [Tom Donovan <Tom.Donovan acm.org>] + + *) The LockFile directive, which specifies the location of + the accept() mutex lockfile, is deprecated. Instead, the + AcceptMutex directive now takes an optional lockfile + location parameter, ala SSLMutex. [Jim Jagielski] + + *) mod_authn_dbd: Export any additional columns queried in the SQL select + into the environment with the name AUTHENTICATE_<COLUMN>. This brings + mod_authn_dbd behaviour in line with mod_authnz_ldap. [Graham Leggett] + + *) mod_dbd: Key the storage of prepared statements on the hex string + value of server_rec, rather than the server name, as the server name + may change (eg when the server name is set) at any time, causing + weird behaviour in modules dependent on mod_dbd. [Graham Leggett] + + *) mod_proxy_fcgi: Added win32 build. [Mladen Turk] + + *) sendfile_nonblocking() takes the _brigade_ as an argument, gets + the first bucket from the brigade, finds it not to be a FILE + bucket and barfs. The fix is to pass a bucket rather than a brigade. + [Niklas Edmundsson <nikke acc.umu.se>] + + *) mod_rewrite: support rewritemap by SQL query [Nick Kew] + + *) ap_get_server_version() has been removed. Third-party modules must + now use ap_get_server_banner() or ap_get_server_description(). + [Jeff Trawick] + + *) All MPMs: Introduce a check_config phase between pre_config and + open_logs, to allow modules to review interdependent configuration + directive values and adjust them while messages can still be logged + to the console. Handle relevant MPM directives during this phase + and format messages for both the console and the error log, as + appropriate. [Chris Darroch] + + *) core: Do not allow internal redirects like the DirectoryIndex of mod_dir + to circumvent the symbolic link checks imposed by FollowSymLinks and + SymLinksIfOwnerMatch. [Nick Kew, Ruediger Pluem, William Rowe] + + *) New SSLLogLevelDebugDump [ None (default) | IO (not bytes) | Bytes ] + configures the I/O Dump of SSL traffic, when LogLevel is set to Debug. + The default is none as this is far greater debugging resolution than + the typical administrator is prepared to untangle. [William Rowe] + + *) mod_disk_cache: If possible, check if the size of an object to cache is + within the configured boundaries before actually saving data. + [Niklas Edmundsson <nikke acc.umu.se>] + + *) Worker and event MPMs: Remove improper scoreboard updates which were + performed in the event of a fork() failure. [Chris Darroch] + + *) Add support for fcgi:// proxies to mod_rewrite. + [Markus Schiegl <ms schiegl.com>] + + *) Remove incorrect comments from scoreboard.h regarding conditional + loading of worker_score structure with mod_status, and remove unused + definitions relating to old life_status field. + [Chris Darroch <chrisd pearsoncmg.com>] + + *) Remove allocation of memory for unused array of lb_score pointers + in ap_init_scoreboard(). [Chris Darroch <chrisd pearsoncmg.com>] + + *) Add mod_proxy_fcgi, a FastCGI back end for mod_proxy. + [Garrett Rooney, Jim Jagielski, Paul Querna] + + *) Event MPM: Fill in the scoreboard's tid field. PR 38736. + [Chris Darroch <chrisd pearsoncmg.com>] + + *) mod_charset_lite: Remove Content-Length when output filter can + invalidate it. Warn when input filter can invalidate it. + [Jeff Trawick] + + *) Authz: Add the new module mod_authn_core that will provide common + authn directives such as 'AuthType', 'AuthName'. Move the directives + 'AuthType' and 'AuthName' out of the core module and merge mod_authz_alias + into mod_authn_core. [Brad Nicholes] + + *) Authz: Move the directives 'Order', 'Allow', 'Deny' and 'Satisfy' + into the new module mod_access_compat which can be loaded to provide + support for these directives. + [Brad Nicholes] + + *) Authz: Move the 'Require' directive from the core module as well as + add the directives '<SatisfyAll>', '<SatisfyOne>', '<RequireAlias>' + and 'Reject' to mod_authz_core. The new directives introduce 'AND/OR' + logic into the authorization processing. [Brad Nicholes] + + *) Authz: Add the new module mod_authz_core which acts as the + authorization provider vector and contains common authz + directives. [Brad Nicholes] + + *) Authz: Renamed mod_authz_dbm authz providers from 'group' and + 'file-group' to 'dbm-group' and 'dbm-file-group'. [Brad Nicholes] + + *) Authz: Added the new authz providers 'env', 'ip', 'host', 'all' to handle + host-based access control provided by mod_authz_host and invoked + through the 'Require' directive. [Brad Nicholes] + + *) Authz: Convert all of the authz modules from hook based to + provider based. [Brad Nicholes] + + *) mod_cache: Add CacheMinExpire directive to set the minimum time in + seconds to cache a document. + [Brian Akins <brian.akins turner.com>, Ruediger Pluem] + + *) mod_authz_dbd: SQL authz with Login/Session support [Nick Kew] + + *) Fix typo in ProxyStatus syntax error message. + [Christophe Jaillet <christophe.jaillet wanadoo.fr>] + + *) Asynchronous write completion for the Event MPM. [Brian Pane] + + *) Added an End-Of-Request bucket type. The logging of a request and + the freeing of its pool are now done when the EOR bucket is destroyed. + This has the effect of delaying the logging until right after the last + of the response is sent; ap_core_output_filter() calls the access logger + indirectly when it destroys the EOR bucket. [Brian Pane] + + *) Rewrite of logresolve support utility: IPv6 addresses are now supported + and the format of statistical output has changed. [Colm MacCarthaigh] + + *) Rewrite of ap_coreoutput_filter to do nonblocking writes [Brian Pane] + + *) Added new connection states for handler and write completion + [Brian Pane] + + *) mod_cgid: Refuse to work on Solaris 10 due to OS bugs. PR 34264. + [Justin Erenkrantz] + + *) Teach mod_ssl to use arbitrary OIDs in an SSLRequire directive, + allowing string-valued client certificate attributes to be used for + access control, as in: SSLRequire "value" in OID("1.3.6.1.4.1.18060.1") + [Martin Kraemer, David Reid] + + [Apache 2.3.0-dev includes those bug fixes and changes with the + Apache 2.2.xx tree as documented, and except as noted, below.] + +Changes with Apache 2.2.x and later: + + *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup + +Changes with Apache 2.0.x and later: + + *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup |