Mozilla Firefox before 3.5.19 and 3.6.x before 3.6.17, and SeaMonkey before 2.0.14, does not properly use nsTreeRange data structures, which allows remote attackers to execute arbitrary code via unspecified vectors that lead to a "dangling pointer."
http://downloads.avaya.com/css/P8/documents/100134543
http://downloads.avaya.com/css/P8/documents/100144158
http://securityreason.com/securityalert/8310
http://www.debian.org/security/2011/dsa-2227
http://www.debian.org/security/2011/dsa-2228
http://www.debian.org/security/2011/dsa-2235
http://www.mandriva.com/security/advisories?name=MDVSA-2011:079
http://www.mozilla.org/security/announce/2011/mfsa2011-13.html
https://bugzilla.mozilla.org/show_bug.cgi?id=630919
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14020