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Description: Fix for CVE-2019-10092
Author: Stefan Eissing
Origin: upstream, https://svn.apache.org/viewvc?view=revision&revision=1864191
Bug: https://security-tracker.debian.org/tracker/CVE-2019-10092
Forwarded: not-needed
Reviewed-By: Xavier Guimard <yadd@debian.org>
Last-Update: 2019-10-11
[Salvatore Bonaccorso: Add additional change from https://svn.apache.org/r1864699
to add missing APLOGNO's in mod_proxy.c and mod_proxy_ftp.c]
--- a/modules/http/http_protocol.c
+++ b/modules/http/http_protocol.c
@@ -1132,13 +1132,10 @@
"\">here</a>.</p>\n",
NULL));
case HTTP_USE_PROXY:
- return(apr_pstrcat(p,
- "<p>This resource is only accessible "
- "through the proxy\n",
- ap_escape_html(r->pool, location),
- "<br />\nYou will need to configure "
- "your client to use that proxy.</p>\n",
- NULL));
+ return("<p>This resource is only accessible "
+ "through the proxy\n"
+ "<br />\nYou will need to configure "
+ "your client to use that proxy.</p>\n");
case HTTP_PROXY_AUTHENTICATION_REQUIRED:
case HTTP_UNAUTHORIZED:
return("<p>This server could not verify that you\n"
@@ -1154,34 +1151,20 @@
"error-notes",
"</p>\n"));
case HTTP_FORBIDDEN:
- s1 = apr_pstrcat(p,
- "<p>You don't have permission to access ",
- ap_escape_html(r->pool, r->uri),
- "\non this server.<br />\n",
- NULL);
- return(add_optional_notes(r, s1, "error-notes", "</p>\n"));
+ return(add_optional_notes(r, "<p>You don't have permission to access this resource.", "error-notes", "</p>\n"));
case HTTP_NOT_FOUND:
- return(apr_pstrcat(p,
- "<p>The requested URL ",
- ap_escape_html(r->pool, r->uri),
- " was not found on this server.</p>\n",
- NULL));
+ return("<p>The requested URL was not found on this server.</p>\n");
case HTTP_METHOD_NOT_ALLOWED:
return(apr_pstrcat(p,
"<p>The requested method ",
ap_escape_html(r->pool, r->method),
- " is not allowed for the URL ",
- ap_escape_html(r->pool, r->uri),
- ".</p>\n",
+ " is not allowed for this URL.</p>\n",
NULL));
case HTTP_NOT_ACCEPTABLE:
- s1 = apr_pstrcat(p,
- "<p>An appropriate representation of the "
- "requested resource ",
- ap_escape_html(r->pool, r->uri),
- " could not be found on this server.</p>\n",
- NULL);
- return(add_optional_notes(r, s1, "variant-list", ""));
+ return(add_optional_notes(r,
+ "<p>An appropriate representation of the requested resource "
+ "could not be found on this server.</p>\n",
+ "variant-list", ""));
case HTTP_MULTIPLE_CHOICES:
return(add_optional_notes(r, "", "variant-list", ""));
case HTTP_LENGTH_REQUIRED:
@@ -1192,18 +1175,13 @@
NULL);
return(add_optional_notes(r, s1, "error-notes", "</p>\n"));
case HTTP_PRECONDITION_FAILED:
- return(apr_pstrcat(p,
- "<p>The precondition on the request "
- "for the URL ",
- ap_escape_html(r->pool, r->uri),
- " evaluated to false.</p>\n",
- NULL));
+ return("<p>The precondition on the request "
+ "for this URL evaluated to false.</p>\n");
case HTTP_NOT_IMPLEMENTED:
s1 = apr_pstrcat(p,
"<p>",
- ap_escape_html(r->pool, r->method), " to ",
- ap_escape_html(r->pool, r->uri),
- " not supported.<br />\n",
+ ap_escape_html(r->pool, r->method), " ",
+ " not supported for current URL.<br />\n",
NULL);
return(add_optional_notes(r, s1, "error-notes", "</p>\n"));
case HTTP_BAD_GATEWAY:
@@ -1211,29 +1189,19 @@
"response from an upstream server.<br />" CRLF;
return(add_optional_notes(r, s1, "error-notes", "</p>\n"));
case HTTP_VARIANT_ALSO_VARIES:
- return(apr_pstrcat(p,
- "<p>A variant for the requested "
- "resource\n<pre>\n",
- ap_escape_html(r->pool, r->uri),
- "\n</pre>\nis itself a negotiable resource. "
- "This indicates a configuration error.</p>\n",
- NULL));
+ return("<p>A variant for the requested "
+ "resource\n<pre>\n"
+ "\n</pre>\nis itself a negotiable resource. "
+ "This indicates a configuration error.</p>\n");
case HTTP_REQUEST_TIME_OUT:
return("<p>Server timeout waiting for the HTTP request from the client.</p>\n");
case HTTP_GONE:
- return(apr_pstrcat(p,
- "<p>The requested resource<br />",
- ap_escape_html(r->pool, r->uri),
- "<br />\nis no longer available on this server "
- "and there is no forwarding address.\n"
- "Please remove all references to this "
- "resource.</p>\n",
- NULL));
+ return("<p>The requested resource is no longer available on this server"
+ " and there is no forwarding address.\n"
+ "Please remove all references to this resource.</p>\n");
case HTTP_REQUEST_ENTITY_TOO_LARGE:
return(apr_pstrcat(p,
- "The requested resource<br />",
- ap_escape_html(r->pool, r->uri), "<br />\n",
- "does not allow request data with ",
+ "The requested resource does not allow request data with ",
ap_escape_html(r->pool, r->method),
" requests, or the amount of data provided in\n"
"the request exceeds the capacity limit.\n",
@@ -1317,11 +1285,9 @@
"the Server Name Indication (SNI) in use for this\n"
"connection.</p>\n");
case HTTP_UNAVAILABLE_FOR_LEGAL_REASONS:
- s1 = apr_pstrcat(p,
- "<p>Access to ", ap_escape_html(r->pool, r->uri),
- "\nhas been denied for legal reasons.<br />\n",
- NULL);
- return(add_optional_notes(r, s1, "error-notes", "</p>\n"));
+ return(add_optional_notes(r,
+ "<p>Access to this URL has been denied for legal reasons.<br />\n",
+ "error-notes", "</p>\n"));
default: /* HTTP_INTERNAL_SERVER_ERROR */
/*
* This comparison to expose error-notes could be modified to
--- a/modules/proxy/mod_proxy.c
+++ b/modules/proxy/mod_proxy.c
@@ -1049,9 +1049,10 @@
char *end;
maxfwd = apr_strtoi64(str, &end, 10);
if (maxfwd < 0 || maxfwd == APR_INT64_MAX || *end) {
- return ap_proxyerror(r, HTTP_BAD_REQUEST,
- apr_psprintf(r->pool,
- "Max-Forwards value '%s' could not be parsed", str));
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(10188)
+ "Max-Forwards value '%s' could not be parsed", str);
+ return ap_proxyerror(r, HTTP_BAD_REQUEST,
+ "Max-Forwards request header could not be parsed");
}
else if (maxfwd == 0) {
switch (r->method_number) {
--- a/modules/proxy/mod_proxy_ftp.c
+++ b/modules/proxy/mod_proxy_ftp.c
@@ -1024,8 +1024,9 @@
/* We break the URL into host, port, path-search */
if (r->parsed_uri.hostname == NULL) {
if (APR_SUCCESS != apr_uri_parse(p, url, &uri)) {
- return ap_proxyerror(r, HTTP_BAD_REQUEST,
- apr_psprintf(p, "URI cannot be parsed: %s", url));
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(10189)
+ "URI cannot be parsed: %s", url);
+ return ap_proxyerror(r, HTTP_BAD_REQUEST, "URI cannot be parsed");
}
connectname = uri.hostname;
connectport = uri.port;
--- a/modules/proxy/proxy_util.c
+++ b/modules/proxy/proxy_util.c
@@ -368,12 +368,9 @@
PROXY_DECLARE(int) ap_proxyerror(request_rec *r, int statuscode, const char *message)
{
- const char *uri = ap_escape_html(r->pool, r->uri);
apr_table_setn(r->notes, "error-notes",
apr_pstrcat(r->pool,
- "The proxy server could not handle the request <em><a href=\"",
- uri, "\">", ap_escape_html(r->pool, r->method), " ", uri,
- "</a></em>.<p>\n"
+ "The proxy server could not handle the request<p>"
"Reason: <strong>", ap_escape_html(r->pool, message),
"</strong></p>",
NULL));
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