CVE-2012-4204
The str_unescape function in the JavaScript engine in Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via unspecified vectors.
Date published : 2012-11-21
http://www.mozilla.org/security/announce/2012/mfsa2012-96.html