CVE-2012-5830
Use-after-free vulnerability in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 on Mac OS X allows remote attackers to execute arbitrary code via an HTML document.
Date published : 2012-11-21
http://www.mozilla.org/security/announce/2012/mfsa2012-106.html