Improper Input Validation Affecting mediawiki package, versions <1:1.15.5-5


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
2.68% (91st percentile)

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  • Snyk IDSNYK-DEBIAN11-MEDIAWIKI-519174
  • published27 Apr 2011
  • disclosed27 Apr 2011

Introduced: 27 Apr 2011

CVE-2011-1579  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Debian:11 mediawiki to version 1:1.15.5-5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mediawiki package and not the mediawiki package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3 does not properly validate Cascading Style Sheets (CSS) token sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks or obtain sensitive information by using the \2f\2a and \2a\2f hex strings to surround CSS comments.

CVSS Scores

version 3.1