Description

The SMTP client in Mozilla Thunderbird 1.0.5 BETA, 1.0.7, and possibly other versions, does not notify users when it cannot establish a secure channel with the server, which allows remote attackers to obtain authentication information without detection via a man-in-the-middle (MITM) attack that bypasses TLS authentication or downgrades CRAM-MD5 authentication to plain authentication.

References

http://marc.info/?l=bugtraq&m=113028017608146&w=2

http://marc.info/?l=bugtraq&m=113034421329653&w=2

http://www.securityfocus.com/bid/15106

https://bugzilla.mozilla.org/show_bug.cgi?id=311657

Details

Risk Information

CVSS v2.0