Incomplete Blacklist Vulnerability in MediaWiki Sanitizer::checkCss Allows for Cross-Site Scripting (XSS) Attacks

CVE-2013-4568 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:P/A:N

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.

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