Mozilla Thunderbird: Multiple vulnerabilities

Security Team Contact Address

Updated March 25, 2005

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200503-32 / Thunderbird
Release Date	March 25, 2005
Latest Revision	March 25, 2005: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
mail-client/mozilla-thunderbird	< 1.0.2	>= 1.0.2	All supported architectures
mail-client/mozilla-thunderbird-bin	< 1.0.2	>= 1.0.2	All supported architectures

Related bugreports: #84075

Synopsis

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

2. Impact Information

Background

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

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.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Mozilla Thunderbird users should upgrade to the latest version:

Code Listing 3.1: Resolution

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

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

Code Listing 3.2: Resolution

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

4. References