Use-after-free vulnerability in the gfxTextRun::CanBreakLineBefore 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.
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00028.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00014.html
http://rhn.redhat.com/errata/RHSA-2012-1210.html
http://rhn.redhat.com/errata/RHSA-2012-1211.html
https://bugzilla.mozilla.org/show_bug.cgi?id=769303
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17015
http://www.debian.org/security/2012/dsa-2553
http://www.debian.org/security/2012/dsa-2554
http://www.debian.org/security/2012/dsa-2556
http://www.mozilla.org/security/announce/2012/mfsa2012-58.html
Published: 2012-08-29
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical