CVE-2013-4568 Information

Description

Incomplete blacklist vulnerability in Sanitizer::checkCss in MediaWiki before 1.19.9 1.20.x before 1.20.8 and 1.21.x before 1.21.3 allows remote attackers to conduct cross-site scripting (XSS) attacks via certain non-ASCII characters in CSS as demonstrated using variations of \expression\ containing (1) full width characters or (2) IPA extensions which are converted and rendered by Internet Explorer.

Reference

http://lists.fedoraproject.org/pipermail/package-announce/2013-December/122998.html http://lists.fedoraproject.org/pipermail/package-announce/2013-December/123011.html http://lists.wikimedia.org/pipermail/mediawiki-announce/2013-November/000135.html http://secunia.com/advisories/57472 http://www.debian.org/security/2014/dsa-2891 http://www.securityfocus.com/bid/63761 https://bugzilla.wikimedia.org/attachment.cgi?id=13452&action=diff https://bugzilla.wikimedia.org/show_bug.cgi?id=55332