summaryrefslogtreecommitdiffstats
path: root/scripts/http-vuln-cve2011-3192.nse
diff options
context:
space:
mode:
Diffstat (limited to 'scripts/http-vuln-cve2011-3192.nse')
-rw-r--r--scripts/http-vuln-cve2011-3192.nse128
1 files changed, 128 insertions, 0 deletions
diff --git a/scripts/http-vuln-cve2011-3192.nse b/scripts/http-vuln-cve2011-3192.nse
new file mode 100644
index 0000000..bbbf2a7
--- /dev/null
+++ b/scripts/http-vuln-cve2011-3192.nse
@@ -0,0 +1,128 @@
+local http = require "http"
+local shortport = require "shortport"
+local stdnse = require "stdnse"
+local vulns = require "vulns"
+
+description = [[
+Detects a denial of service vulnerability in the way the Apache web server
+handles requests for multiple overlapping/simple ranges of a page.
+
+References:
+* https://seclists.org/fulldisclosure/2011/Aug/175
+* https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3192
+* https://www.tenable.com/plugins/nessus/55976
+]]
+
+---
+-- @see http-slowloris-check.nse
+-- @see http-slowloris.nse
+--
+-- @usage
+-- nmap --script http-vuln-cve2011-3192.nse [--script-args http-vuln-cve2011-3192.hostname=nmap.scanme.org] -pT:80,443 <host>
+--
+-- @output
+-- Host script results:
+-- | http-vuln-cve2011-3192:
+-- | VULNERABLE:
+-- | Apache byterange filter DoS
+-- | State: VULNERABLE
+-- | IDs: CVE:CVE-2011-3192 BID:49303
+-- | Description:
+-- | The Apache web server is vulnerable to a denial of service attack when numerous
+-- | overlapping byte ranges are requested.
+-- | Disclosure date: 2011-08-19
+-- | References:
+-- | https://seclists.org/fulldisclosure/2011/Aug/175
+-- | https://www.tenable.com/plugins/nessus/55976
+-- | https://www.securityfocus.com/bid/49303
+-- |_ https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3192
+--
+-- @args http-vuln-cve2011-3192.hostname Define the host name to be used in the HEAD request sent to the server
+-- @args http-vuln-cve2011-3192.path Define the request path
+
+-- changelog
+-- 2011-08-29 Duarte Silva <duarte.silva@serializing.me>
+-- - Removed the "Accept-Encoding" HTTP header
+-- - Removed response header printing
+-- * Changes based on Henri Doreau and David Fifield suggestions
+-- 2011-08-20 Duarte Silva <duarte.silva@serializing.me>
+-- * First version ;)
+-- 2011-11-07 Henri Doreau
+-- * Use the vulns library to report results
+-----------------------------------------------------------------------
+
+author = "Duarte Silva <duarte.silva@serializing.me>"
+license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
+categories = {"vuln", "safe"}
+
+
+portrule = shortport.http
+
+action = function(host, port)
+ local vuln = {
+ title = 'Apache byterange filter DoS',
+ state = vulns.STATE.NOT_VULN, -- default
+ IDS = {CVE = 'CVE-2011-3192', BID = '49303'},
+ description = [[
+The Apache web server is vulnerable to a denial of service attack when numerous
+overlapping byte ranges are requested.]],
+ references = {
+ 'https://seclists.org/fulldisclosure/2011/Aug/175',
+ 'https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3192',
+ 'https://www.tenable.com/plugins/nessus/55976',
+ },
+ dates = {
+ disclosure = {year = '2011', month = '08', day = '19'},
+ },
+ }
+ local vuln_report = vulns.Report:new(SCRIPT_NAME, host, port)
+ local hostname, path = stdnse.get_script_args('http-vuln-cve2011-3192.hostname',
+ 'http-vuln-cve2011-3192.path')
+
+ if not path then
+ path = '/'
+
+ stdnse.debug1("Setting the request path to '/' since 'http-vuln-cve2011-3192.path' argument is missing.")
+ end
+
+ -- This first request will try to get a code 206 reply from the server by
+ -- sending the innocuous header "Range: byte=0-100" in order to detect
+ -- whether this functionality is available or not.
+ local request_opts = {
+ header = {
+ Range = "bytes=0-100",
+ Connection = "close"
+ },
+ bypass_cache = true
+ }
+
+ if hostname then
+ request_opts.header.Host = hostname
+ end
+
+ local response = http.head(host, port, path, request_opts)
+
+ if not response.status then
+ stdnse.debug1("Functionality check HEAD request failed for %s (with path '%s').", hostname or host.ip, path)
+ elseif response.status == 206 then
+ -- The server handle range requests. Now try to request 11 ranges (one more
+ -- than allowed).
+ -- Vulnerable servers will reply with another code 206 response. Patched
+ -- ones will return a code 200.
+ request_opts.header.Range = "bytes=1-0,0-0,1-1,2-2,3-3,4-4,5-5,6-6,7-7,8-8,9-9,10-10"
+
+ response = http.head(host, port, path, request_opts)
+
+ if not response.status then
+ stdnse.debug1("Invalid response from server to the vulnerability check")
+ elseif response.status == 206 then
+ vuln.state = vulns.STATE.VULN
+ else
+ stdnse.debug1("Server isn't vulnerable (%i status code)", response.status)
+ end
+ else
+ stdnse.debug1("Server ignores the range header (%i status code)", response.status)
+ end
+ return vuln_report:make_output(vuln)
+end
+