Use-after-free vulnerability in the nsHtml5TreeOperation function in xul.dll in Mozilla Firefox before 34.0, Firefox ESR 31.x before 31.3, Thunderbird before 31.3, and SeaMonkey before 2.31 allows remote attackers to execute arbitrary code by adding a second root element to an HTML5 document during parsing.
lists.opensuse.org/opensuse-security-announce/2015-01/msg00024.html
lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
www.debian.org/security/2014/dsa-3090
www.debian.org/security/2014/dsa-3092
www.mozilla.org/security/announce/2014/mfsa2014-87.html
www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
www.securityfocus.com/bid/71398
bugzilla.mozilla.org/show_bug.cgi?id=1088635
security.gentoo.org/glsa/201504-01