Mozilla Firefox 4.x through 9.0 and SeaMonkey before 2.7 on Linux and Mac OS X set weak permissions for Firefox Recovery Key.html, which might allow local users to read a Firefox Sync key via standard filesystem operations.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14670
https://exchange.xforce.ibmcloud.com/vulnerabilities/72869
https://bugzilla.mozilla.org/show_bug.cgi?id=716868
http://www.mozilla.org/security/announce/2012/mfsa2012-09.html
http://www.mandriva.com/security/advisories?name=MDVSA-2012:013
http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00011.html