Mandriva Linux Security Advisory 2009-083 – A number of security vulnerabilities have been discovered in previous versions, and corrected in the latest Mozilla Thunderbird program, version 2.0.0.21. This update provides the latest Thunderbird to correct these issues. Additionally, Mozilla Thunderbird released with Mandriva Linux 2009.0, when used with Enigmail extension on x86_64 architecture, would freeze whenever any Enigmail function was used. Also, when used on i586 architecture, Thunderbird would crash when sending an email, if a file with an unknown extension was attached to it. This update also fixes those issues.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/76263/MDVSA-2009-083.txt
Source: https://packetstormsecurity.com/files/76263/Mandriva-Linux-Security-Advisory-2009-083.html