Use-after-free vulnerability in the mozSpellChecker::SetCurrentDictionary function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16853
https://bugzilla.mozilla.org/show_bug.cgi?id=771976
http://www.xerox.com/download/security/security-bulletin/16287-4d6b7b0c81f7b/cert_XRX13-003_v1.0.pdf
http://www.ubuntu.com/usn/USN-1548-2
http://www.ubuntu.com/usn/USN-1548-1
http://www.securityfocus.com/bid/55325
http://www.mozilla.org/security/announce/2012/mfsa2012-58.html
http://rhn.redhat.com/errata/RHSA-2012-1211.html
http://rhn.redhat.com/errata/RHSA-2012-1210.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00014.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00028.html