Use-after-free vulnerability in the nsIPresShell::GetPresContext function in the PresShell (aka presentation shell) implementation in Mozilla Firefox before 25.0, Firefox ESR 17.x before 17.0.10 and 24.x before 24.1, Thunderbird before 24.1, Thunderbird ESR 17.x before 17.0.10, and SeaMonkey before 2.22 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption and application crash) via vectors involving a CANVAS element, a mozTextStyle attribute, and an onresize event.
lists.opensuse.org/opensuse-security-announce/2013-11/msg00005.html
lists.opensuse.org/opensuse-security-announce/2013-11/msg00006.html
lists.opensuse.org/opensuse-security-announce/2013-11/msg00014.html
rhn.redhat.com/errata/RHSA-2013-1476.html
rhn.redhat.com/errata/RHSA-2013-1480.html
www.debian.org/security/2013/dsa-2788
www.debian.org/security/2013/dsa-2797
www.mozilla.org/security/announce/2013/mfsa2013-100.html
bugzilla.mozilla.org/show_bug.cgi?id=915210
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19315
security.gentoo.org/glsa/201504-01