The layout engine in Mozilla Firefox 3.x before 3.0.5, Thunderbird 2.x before 2.0.0.19, and SeaMonkey 1.x before 1.1.14 allows remote attackers to cause a denial of service (crash) via vectors that trigger memory corruption, related to the GetXMLEntity and FastAppendChar functions.
https://bugzilla.mozilla.org/show_bug.cgi?id=458679
http://secunia.com/advisories/33188
http://secunia.com/advisories/33189
http://secunia.com/advisories/33203
http://secunia.com/advisories/33216
http://secunia.com/advisories/33421
http://secunia.com/advisories/34501
https://exchange.xforce.ibmcloud.com/vulnerabilities/47408
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10001
http://www.mandriva.com/security/advisories?name=MDVSA-2008:245
http://www.mozilla.org/security/announce/2008/mfsa2008-60.html
http://www.redhat.com/support/errata/RHSA-2008-1036.html
http://www.redhat.com/support/errata/RHSA-2008-1037.html
http://www.redhat.com/support/errata/RHSA-2009-0002.html