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.

*CVSS:

Base Score: 4.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 3.7
  Exploitability: High
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

For Apple Mac OS:
Apply Apple Security Update 2009-002, available from the Apple Web site. See References.

Refer to GLSA-200803-19 for patch, upgrade or suggested workaround information. See References.

References:

  • Apache Web site: Apache.
  • Apple Web site: About the security content of Security Update 2009-002 / Mac OS X v10.5.7.
  • Full-Disclosure Mailing List, Tue, 22 Jan 2008 23:16:09 +0100: Apache mod_negotiation Xss and Http Response Splitting.
  • Gentoo Bugzilla Bug 209899: www-servers/apache mod_negotiation XSS and CRLF injection (CVE-2008-{0455,0456}).
  • 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
  • SA35074: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
  • SECTRACK ID: 1019256: Apache mod_negotiation Input Validation Hole Permits Cross-Site Scripting Attacks
  • VUPEN/ADV-2009-1297: Apple Mac OS X Code Execution and Security Bypass Vulnerabilities

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
  • Apache HTTP Server 2.0.32 Beta
  • 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
  • Apple Mac OS X 10.5
  • Apple Mac OS X 10.5.1
  • Apple Mac OS X 10.5.2
  • Apple Mac OS X 10.5.3
  • Apple Mac OS X 10.5.4
  • Apple Mac OS X 10.5.5
  • Apple Mac OS X 10.5.6
  • Apple Mac OS X Server 10.5
  • Apple Mac OS X Server 10.5.1
  • Apple Mac OS X Server 10.5.2
  • Apple Mac OS X Server 10.5.3
  • Apple Mac OS X Server 10.5.4
  • Apple Mac OS X Server 10.5.5
  • Apple Mac OS X Server 10.5.6
  • Gentoo Linux

Reported:

Jan 22, 2008

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