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TITLE:
Mozilla Thunderbird Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA21939

VERIFY ADVISORY:
http://secunia.com/advisories/21939/

CRITICAL:
Highly critical

IMPACT:
Security Bypass, DoS, System access

WHERE:
>From remote

SOFTWARE:
Mozilla Thunderbird 1.5.x
http://secunia.com/product/4652/
Mozilla Thunderbird 1.0.x
http://secunia.com/product/9735/
Mozilla Thunderbird 0.x
http://secunia.com/product/2637/

DESCRIPTION:
Some vulnerabilities have been reported in Mozilla Thunderbird, which
can be exploited by malicious people to conduct man-in-the-middle
attacks, bypass certain security restrictions, and potentially
compromise a user's system.

The problem is that scripts in remote XBL files in e-mails can be
executed even when JavaScript has been disabled (JavaScript is
disabled by default). This can be exploited to cause JavaScript code
to be executed whenever the HTML content of an e-mail is being
viewed, forwarded, or replied to. This may also enable exploitation
of vulnerabilities requiring JavaScript.

Successful exploitation requires that the "Load Images" setting is
enabled.

Some other vulnerabilities have also been reported. For more
information:
SA21903

And vulnerabilities #1, #2, #3, and #7 in:
SA21906

NOTE: Exploitation of some of the vulnerabilities requires that
JavaScript is enabled.

SOLUTION:
Update to version 1.5.0.7.
http://www.mozilla.com/thunderbird/

PROVIDED AND/OR DISCOVERED BY:
Georgi Guninski

ORIGINAL ADVISORY:
http://www.mozilla.org/security/announce/2006/mfsa2006-63.html

OTHER REFERENCES:
SA21903:
http://secunia.com/advisories/21903/

SA21906:
http://secunia.com/advisories/21906/

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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