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MediaWiki: Cross-site scripting vulnerability


1.  Gentoo Linux Security Advisory

Version Information

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


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

2.  Impact Information


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


MediaWiki fails to decode certain encoded URLs correctly.


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


There is no known workaround at this time.


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


Page updated April 04, 2006

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