Mozilla Firefox before 3.6.26 and 4.x through 9.0, Thunderbird before 3.1.18 and 5.0 through 9.0, and SeaMonkey before 2.7 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via a malformed XSLT stylesheet that is embedded in a document.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14618
https://exchange.xforce.ibmcloud.com/vulnerabilities/72868
https://bugzilla.mozilla.org/show_bug.cgi?id=702466
https://bugzilla.mozilla.org/show_bug.cgi?id=701806
http://www.securityfocus.com/bid/51754
http://www.mozilla.org/security/announce/2012/mfsa2012-08.html
http://www.mandriva.com/security/advisories?name=MDVSA-2012:013
http://www.debian.org/security/2012/dsa-2406
http://www.debian.org/security/2012/dsa-2402
http://www.debian.org/security/2012/dsa-2400
http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00003.html