From Secunia Security Advisor:
Multiple vulnerabilities have been reported in Mozilla Firefox, which can be exploited by malicious people to bypass certain security restrictions, disclose certain sensitive information, and compromise a vulnerable system.
Solution: Update to Firefox version 3.6.20
Hi, Daniel. Thanks for the bug. Please search for existing bugs before opening new bugs. I recommend searching for CVE ID, without the second hyphen. For example, searching for 'CVE-2011 0084', would have found the other bug.
Also, restricting to "Gentoo Security" is only required for confidential bugs. Feel free to email me with any questions. Tnx.
*** This bug has been marked as a duplicate of bug 379549 ***