Gentoo has issued an update for firefox, seamonkey, and xulrunner. This fixes some vulnerabilities and a weakness, which can be exploited by malicious people to disclose sensitive information, conduct phishing attacks, manipulate certain data, and potentially compromise a user's system.

For more information:
SA27311

Solution
All firefox users:
Further details available to Secunia VIM customers

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers