Secunia Security Advisory – Ubuntu has issued an update for thunderbird. This fixes some vulnerabilities, which can be exploited by malicious people to compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/87458/sa38977.txt
Source: https://packetstormsecurity.com/files/87458/Secunia-Security-Advisory-38977.html