MediaWiki: Multiple vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200502-33 / mediawiki
Release Date	February 28, 2005
Latest Revision	February 28, 2005: 01
Impact	low
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-apps/mediawiki	< 1.3.11	>= 1.3.11	All supported architectures

Related bugreports: #80729, #82954

Synopsis

MediaWiki is vulnerable to cross-site scripting, data manipulation and security bypass attacks.

2. Impact Information

Background

MediaWiki is a collaborative editing software, used by big projects like Wikipedia.

Description

A security audit of the MediaWiki project discovered that MediaWiki is vulnerable to several cross-site scripting and cross-site request forgery attacks, and that the image deletion code does not sufficiently sanitize input parameters.

Impact

By tricking a user to load a carefully crafted URL, a remote attacker could hijack sessions and authentication cookies to inject malicious script code that will be executed in a user's browser session in context of the vulnerable site, or use JavaScript submitted forms to perform restricted actions. Using the image deletion flaw, it is also possible for authenticated administrators to delete arbitrary files via directory traversal.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All MediaWiki users should upgrade to the latest available version:

Code Listing 3.1: Resolution

# emerge --sync 
# emerge --ask --oneshot --verbose ">=www-apps/mediawiki-1.3.11"

4. References

Page updated February 28, 2005

Summary: This is a Gentoo Linux Security Advisory

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