Mozilla Firefox before 3.6.25 and Thunderbird before 3.1.17 on Mac OS X do not consider .jar files to be executable files, which allows user-assisted remote attackers to bypass intended access restrictions via a crafted file. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-2372 on Mac OS X.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14831
https://bugzilla.mozilla.org/show_bug.cgi?id=704622
http://www.securitytracker.com/id?1026447
http://www.securitytracker.com/id?1026445
http://www.mozilla.org/security/announce/2011/mfsa2011-59.html