CVE-2013-4568

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.

4.3

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 0.44%

Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org

Affected: n/a n/a

References

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

Frequently Asked Questions

What is the severity of CVE-2013-4568?: CVE-2013-4568 has been scored as a medium severity vulnerability.
How to fix CVE-2013-4568?: To fix CVE-2013-4568, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-4568 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2013-4568 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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