The js_watch_set function in js/src/jsdbgapi.cpp in the JavaScript engine in Mozilla Firefox before 3.0.12 allows remote attackers to cause a denial of service (assertion failure and application exit) or possibly execute arbitrary code via a crafted .js file, related to a "memory safety bug." NOTE: this was originally reported as affecting versions before 3.0.13.
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00261.html
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00198.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9806
https://bugzilla.mozilla.org/show_bug.cgi?id=501270
http://www.vupen.com/english/advisories/2009/2142
http://www.securityfocus.com/bid/35927
http://www.mozilla.org/security/announce/2009/mfsa2009-45.html
http://sunsolve.sun.com/search/document.do?assetkey=1-66-266148-1