Secunia Security Advisory – Ubuntu has issued an update for thunderbird. This fixes some vulnerabilities, which can be exploited by malicious people to compromise a user’s system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/91581/sa40372.txt
Source: https://packetstormsecurity.com/files/91581/Secunia-Security-Advisory-40372.html