Secunia Security Advisory – rPath has issued updates for firefox and thunderbird. These fix some vulnerabilities, which can be exploited by malicious people to conduct man-in-the-middle, spoofing, and cross-site scripting attacks, and potentially compromise a user’s system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/50086/sa21950.txt
Source: https://packetstormsecurity.com/files/50086/Secunia-Security-Advisory-21950.html

