MediaWiki: Cross-site scripting vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200604-01 / mediawiki
Release Date	April 04, 2006
Latest Revision	April 04, 2006: 01
Impact	low
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-apps/mediawiki	< 1.4.15	>= 1.4.15	All supported architectures

Related bugreports: #127971

Synopsis

MediaWiki is vulnerable to a cross-site scripting attack that could allow arbitrary JavaScript code execution.

2. Impact Information

Background

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

Description

MediaWiki fails to decode certain encoded URLs correctly.

Impact

By supplying specially crafted links, a remote attacker could exploit this vulnerability to inject malicious HTML or JavaScript code that will be executed in a user's browser session in the context of the vulnerable site.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All MediaWiki users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/mediawiki-1.4.15"

4. References

Updated April 04, 2006

Summary: This is a Gentoo Linux Security Advisory

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