The browser engine in Mozilla Firefox 4.x through 5, SeaMonkey 2.x before 2.3, Thunderbird before 6, and possibly other products does not properly implement JavaScript, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.
http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00023.html
https://bugzilla.mozilla.org/show_bug.cgi?id=655660
http://secunia.com/advisories/49055
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14303
http://www.mozilla.org/security/announce/2011/mfsa2011-29.html
http://www.mozilla.org/security/announce/2011/mfsa2011-31.html
http://www.mozilla.org/security/announce/2011/mfsa2011-33.html
Published: 2011-08-18
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical