A Mozilla Thunderbird security update has been released for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200503-32
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http://security.gentoo.org/
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Severity: Normal
Title: Mozilla Thunderbird: Multiple vulnerabilities
Date: March 25, 2005
Bugs: #84075
ID: 200503-32

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Synopsis
=======

Mozilla Thunderbird is vulnerable to multiple issues, including the remote execution of arbitrary code through malicious GIF images.



Background
=========

Mozilla Thunderbird is the next-generation mail client from the Mozilla project.

Affected packages
================

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Package / Vulnerable / Unaffected
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1 mozilla-thunderbird < 1.0.2 >= 1.0.2
2 mozilla-thunderbird-bin < 1.0.2 >= 1.0.2
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2 affected packages on all of their supported architectures.
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Description
==========

The following vulnerabilities were found and fixed in Mozilla Thunderbird:

* Mark Dowd from ISS X-Force reported an exploitable heap overrun in the GIF processing of obsolete Netscape extension 2 (CAN-2005-0399)

* Daniel de Wildt and Gael Delalleau discovered a memory overwrite in a string library (CAN-2005-0255)

* Wind Li discovered a possible heap overflow in UTF8 to Unicode conversion (CAN-2005-0592)

* Phil Ringnalda reported a possible way to spoof Install source with user:pass@host (CAN-2005-0590)

Impact
=====

The GIF heap overflow could be triggered by a malicious GIF image that would end up executing arbitrary code with the rights of the user running Thunderbird. The other overflow issues, while not thought to be exploitable, would have the same impact. Furthermore, by setting up malicious websites and convincing users to follow untrusted links, attackers may leverage the spoofing issue to trick user into installing malicious extensions.

Workaround
=========

There is no known workaround at this time.

Resolution
=========

All Mozilla Thunderbird users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=mail-client/mozilla-thunderbird-1.0.2"

All Mozilla Thunderbird binary users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=mail-client/mozilla-thunderbird-bin-1.0.2"

References
=========

[ 1 ] CAN-2005-0255
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0255
[ 2 ] CAN-2005-0399
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0399
[ 3 ] CAN-2005-0590
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0590
[ 4 ] CAN-2005-0592
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0592
[ 5 ] Mozilla Security Advisories
http://www.mozilla.org/projects/security/known-vulnerabilities.html

Availability
===========

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200503-32.xml

Concerns?
========

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org.

License
======

Copyright 2005 Gentoo Foundation, Inc; referenced text belongs to its owner(s).

The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0