19863 : mod_auth_shadow for Apache HTTP Server require group Authentication Bypass
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
2	420	over 6 years ago	over 3 years ago	0 times	90%

Timeline

Discovery Date	Exploit Publish Date	Disclosure Date
2005-08-05	2005-08-05	2005-10-05

Description

The Apache mod_auth_shadow module contains a flaw that may allow a remote attacker to bypass authentication. The issue is triggered when mod_auth_shadow turns itself on and cannot be turned off whenever "require group" is used. This makes it impossible to use any other authentication modules with "require group". This flaw may lead to a loss of integrity.

Classification

Location: Remote / Network Access
Attack Type: Authentication Management
Impact: Loss of Integrity
Exploit: Exploit Public
Disclosure: OSVDB Verified, Vendor Verified
OSVDB: Web Related

Solution

Upgrade to version 1.5 or higher or to version 2.1 or higher, as it has been reported to fix this vulnerability. In addition, Debian has released a patch for some older versions of mod_auth_shadow.

Products

Brian Duggan	mod_auth_shadow	1.0
		1.1
		1.2
		1.3
		1.4
		2.0

References

Bugtraq ID: 15224
Secunia Advisory ID: 17060 17067 17348
CVE ID: 2005-2963 (see also: NVD)
ISS X-Force ID: 22520
Mail List Post: http://archives.neohapsis.com/archives/fulldisclosure/2005-10/0095.html
Vendor Specific News/Changelog Entry: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=323789
Other Advisory URL: http://frontal1.mandriva.com/security/advisories?name=MDKSA-2005:200
http://www.debian.org/security/2005/dsa-844
Vendor URL: http://mod-auth-shadow.sourceforge.net/
Vendor Specific Solution URL: http://sourceforge.net/project/showfiles.php?group_id=11283

Tools & Filters

	19848 20126

Credit

David Herselman - sics-supportsyrex.co.za - Syrex Intranets

CVSSv2 Score

CVSSv2 Base Score = 7.5
Source: nvd.nist.gov | Generated: 2005-10-14 | Disagree?

Blogs

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