Apache HTTP Server mod_negotiation HTTP response splitting

apache-modnegotiation-response-splitting (39893) The risk level is classified as MediumMedium Risk

Description:

Apache HTTP Server is vulnerable to HTTP response splitting attacks, caused by improper validation of filenames by the mod_negotiation module that contain a Line Feed and are returned in the HTTP response header. A remote attacker could exploit this vulnerability and modify HTTP headers using an unspecified parameter in a specially-crafted URL to cause the server to return a split response, once the URL is clicked. This would allow the attacker to perform further attacks, such as Web cache poisoning, cross-site scripting, and possibly obtain sensitive information.

Platforms Affected:

  • Apache, HTTP Server 1.3.3
  • Apache, HTTP Server 1.3.30
  • Apache, HTTP Server 1.3.31
  • Apache, HTTP Server 1.3.32
  • Apache, HTTP Server 1.3.33
  • Apache, HTTP Server 1.3.34
  • Apache, HTTP Server 1.3.35
  • Apache, HTTP Server 1.3.36
  • Apache, HTTP Server 1.3.37
  • Apache, HTTP Server 1.3.38
  • Apache, HTTP Server 1.3.39
  • Apache, HTTP Server 2.0
  • Apache, HTTP Server 2.0 A9
  • Apache, HTTP Server 2.0.28 Beta
  • Apache, HTTP Server 2.0.28
  • Apache, HTTP Server 2.0.32 Beta
  • Apache, HTTP Server 2.0.32
  • Apache, HTTP Server 2.0.34 Beta
  • Apache, HTTP Server 2.0.35
  • Apache, HTTP Server 2.0.36
  • Apache, HTTP Server 2.0.37
  • Apache, HTTP Server 2.0.38
  • Apache, HTTP Server 2.0.39
  • Apache, HTTP Server 2.0.40
  • Apache, HTTP Server 2.0.41
  • Apache, HTTP Server 2.0.42
  • Apache, HTTP Server 2.0.43
  • Apache, HTTP Server 2.0.44
  • Apache, HTTP Server 2.0.45
  • Apache, HTTP Server 2.0.46
  • Apache, HTTP Server 2.0.47
  • Apache, HTTP Server 2.0.48
  • Apache, HTTP Server 2.0.49
  • Apache, HTTP Server 2.0.50
  • Apache, HTTP Server 2.0.51
  • Apache, HTTP Server 2.0.52
  • Apache, HTTP Server 2.0.53
  • Apache, HTTP Server 2.0.54
  • Apache, HTTP Server 2.0.55
  • Apache, HTTP Server 2.0.56 Dev
  • Apache, HTTP Server 2.0.56
  • Apache, HTTP Server 2.0.57
  • Apache, HTTP Server 2.0.58
  • Apache, HTTP Server 2.0.59
  • Apache, HTTP Server 2.0.60
  • Apache, HTTP Server 2.0.60 Dev
  • Apache, HTTP Server 2.0.61 Dev
  • Apache, HTTP Server 2.0.61
  • Apache, HTTP Server 2.2
  • Apache, HTTP Server 2.2.0
  • Apache, HTTP Server 2.2.1
  • Apache, HTTP Server 2.2.2
  • Apache, HTTP Server 2.2.3
  • Apache, HTTP Server 2.2.4
  • Apache, HTTP Server 2.2.5 Dev
  • Apache, HTTP Server 2.2.5
  • Apache, HTTP Server 2.2.6
  • Gentoo, Linux

Remedy:

Upgrade to the latest version of Apache HTTP Server (2.2.8 or later), available from the Apache Web site. See References.

Consequences:

Gain Access

References:

  • Apache Web site, Apache at http://apache.org.
  • Full-Disclosure Mailing List, Tue, 22 Jan 2008 23:16:09 +0100, Apache mod_negotiation Xss and Http Response Splitting at http://seclists.org/webappsec/2008/q1/0025.html.
  • BID-27409: Apache 'mod_negotiation' HTML Injection and HTTP Response Splitting Vulnerability
  • CVE-2008-0456: CRLF injection vulnerability in the mod_negotiation module in the Apache HTTP Server 2.2.6 and earlier in the 2.2.x series, 2.0.61 and earlier in the 2.0.x series, and 1.3.39 and earlier in the 1.3.x series allows remote authenticated users to inject arbitrary HTTP headers and conduct HTTP response splitting attacks by uploading a file with a multi-line name containing HTTP header sequences and a file extension, which leads to injection within a (1) 406 Not Acceptable or (2) 300 Multiple Choices HTTP response when the extension is omitted in a request for the file.
  • GLSA-200803-19: Apache: Multiple vulnerabilities
  • SECTRACK ID: 1019256: Apache mod_negotiation Input Validation Hole Permits Cross-Site Scripting Attacks

Reported:

Jan 22, 2008

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