Secunia Security Advisory – Ubuntu has issued an update for thunderbird. This fixes some vulnerabilities, which can be exploited by malicious people to bypass certain security restrictions, conduct spoofing attacks, conduct cross-site scripting and cross-site request forgery attacks, and potentially to compromise a user’s system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/78857/sa35536.txt
Source: https://packetstormsecurity.com/files/78857/Secunia-Security-Advisory-35536.html