Secunia Security Advisory – Red Hat has issued an update for thunderbird. This fixes some vulnerabilities, which can be exploited by malicious people to conduct man-in-the-middle attacks, bypass certain security restrictions, and potentially compromise a user’s system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/50072/sa21916.txt
Source: https://packetstormsecurity.com/files/50072/Secunia-Security-Advisory-21916.html