Multiple vulnerabilities have been reported in Mozilla Thunderbird, which can be exploited by malicious people to conduct spoofing and cross-site scripting attacks, disclose certain sensitive information, bypass certain security restrictions, and compromise a user's system.

For more information:
SA49965

Solution
Upgrade to version 14.
Original Advisory
http://www.mozilla.org/security/announce/2012/mfsa2012-42.html
http://www.mozilla.org/security/announce/2012/mfsa2012-44.html
http://www.mozilla.org/security/announce/2012/mfsa2012-45.html
http://www.mozilla.org/security/announce/2012/mfsa2012-47.html
http://www.mozilla.org/security/announce/2012/mfsa2012-48.html
http://www.mozilla.org/security/announce/2012/mfsa2012-49.html
http://www.mozilla.org/security/announce/2012/mfsa2012-50.html
http://www.mozilla.org/security/announce/2012/mfsa2012-51.html
http://www.mozilla.org/security/announce/2012/mfsa2012-52.html
http://www.mozilla.org/security/announce/2012/mfsa2012-53.html
http://www.mozilla.org/security/announce/2012/mfsa2012-54.html
http://www.mozilla.org/security/announce/2012/mfsa2012-56.html

Other references
Further details available to Secunia VIM customers

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