Vulnerability Description
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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mediawiki | Mediawiki | <= 1.16.2 |
Related Weaknesses (CWE)
References
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058588.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058910.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/059232.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/059235.html
- http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-April/000096.htmlVendor Advisory
- http://openwall.com/lists/oss-security/2011/04/13/15
- http://secunia.com/advisories/44142Vendor Advisory
- http://www.debian.org/security/2011/dsa-2366
- http://www.mediawiki.org/wiki/Special:Code/MediaWiki/85856ExploitPatch
- http://www.securityfocus.com/bid/47354
- http://www.vupen.com/english/advisories/2011/0978PatchVendor Advisory
- http://www.vupen.com/english/advisories/2011/1100
- http://www.vupen.com/english/advisories/2011/1151
- https://bugzilla.redhat.com/show_bug.cgi?id=695577
- https://bugzilla.redhat.com/show_bug.cgi?id=696360
FAQ
What is CVE-2011-1579?
CVE-2011-1579 is a vulnerability with a CVSS score of 5.8 (MEDIUM). 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...
How severe is CVE-2011-1579?
CVE-2011-1579 has been rated MEDIUM with a CVSS base score of 5.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-1579?
Check the references section above for vendor advisories and patch information. Affected products include: Mediawiki Mediawiki.