Multiple vulnerabilities have been reported in Mozilla Thunderbird, which can be exploited by malicious people to disclose sensitive information and compromise a user's system.

For more information:
SA44357

Solution
Update to version 3.1.10.
Original Advisory
http://www.mozilla.org/security/announce/2011/mfsa2011-12.html
http://www.mozilla.org/security/announce/2011/mfsa2011-16.html

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers