full-disclosure - [ GLSA 200406-08 ] Squirrelmail: Another XSS vulnerability

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From: koon at gentoo.org (Thierry Carrez)
Subject: [ GLSA 200406-08 ] Squirrelmail: Another XSS vulnerability

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Gentoo Linux Security Advisory                           GLSA 200406-08
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Squirrelmail: Another XSS vulnerability
      Date: June 15, 2004
      Bugs: #52434
        ID: 200406-08

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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
=================

    -------------------------------------------------------------------
     Package                   /     Vulnerable     /       Unaffected
    -------------------------------------------------------------------
  1  mail-client/squirrelmail      <= 1.4.3_rc1-r1            >= 1.4.3

Description
===========

A new cross-site scripting (XSS) vulnerability in
Squirrelmail-1.4.3_rc1 has been discovered. In functions/mime.php
Squirrelmail fails to properly sanitize user input.

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 stable version:

    # emerge sync

    # emerge -pv ">=mail-client/squirrelmail-1.4.3"
    # emerge ">=mail-client/squirrelmail-1.4.3"

References
==========

  [ 1 ] RS-Labs Advisory
        http://www.rs-labs.com/adv/RS-Labs-Advisory-2004-1.txt
  [ 2 ] CERT description of XSS
        http://www.cert.org/advisories/CA-2000-02.html

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

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

     http://security.gentoo.org/glsa/glsa-200406-08.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@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2004 Gentoo Technologies, 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/1.0

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