A SquirrelMail security update is available for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200411-25
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http://security.gentoo.org/
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Severity: Low
Title: SquirrelMail: Encoded text XSS vulnerability
Date: November 17, 2004
Bugs: #70739
ID: 200411-25

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Synopsis
=======

Squirrelmail fails to properly sanitize user input, which could lead to a compromise of webmail accounts.



Background
=========

SquirrelMail is a webmail package written in PHP. It supports IMAP and SMTP, and can optionally be installed with SQL support.

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

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Package / Vulnerable / Unaffected
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1 mail-client/squirrelmail < 1.4.3a-r2 >= 1.4.3a-r2

Description
==========

SquirrelMail fails to properly sanitize certain strings when decoding specially-crafted headers.

Impact
=====

By enticing a user to read a specially-crafted e-mail, an attacker can execute arbitrary scripts running in the context of the victim's browser. This could lead to a compromise of the user's webmail account, cookie theft, etc.

Workaround
=========

There is no known workaround at this time.

Resolution
=========

All SquirrelMail users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-client/squirrelmail-1.4.3a-r2"

Note: Users with the vhosts USE flag set should manually use webapp-config to finalize the update.

References
=========

[ 1 ] SquirrelMail Advisory
http://article.gmane.org/gmane.mail.squirrelmail.user/21169

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

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

http://security.gentoo.org/glsa/glsa-200411-25.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 2004 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