Mozilla Firefox before 3.0.12 and 3.5 before 3.5.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via vectors involving a Flash object, a slow script dialog, and the unloading of the Flash plugin, which triggers attempted use of a deleted object.
https://www.redhat.com/archives/fedora-package-announce/2009-July/msg01032.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10473
https://bugzilla.mozilla.org/show_bug.cgi?id=493601
http://www.vupen.com/english/advisories/2009/1972
http://www.securityfocus.com/bid/35758
http://www.mozilla.org/security/announce/2009/mfsa2009-35.html
http://sunsolve.sun.com/search/document.do?assetkey=1-66-266148-1
http://secunia.com/advisories/36145
http://secunia.com/advisories/36005
http://secunia.com/advisories/35944
http://secunia.com/advisories/35914
http://rhn.redhat.com/errata/RHSA-2009-1162.html
http://lists.opensuse.org/opensuse-security-announce/2009-08/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00005.html