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[ GLSA 200603-09 ] SquirrelMail: Cross-site scripting and IMAP command injection
From: Stefan Cornelius <dercorny () gentoo org>
Date: Sun, 12 Mar 2006 15:53:01 +0100

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Gentoo Linux Security Advisory                           GLSA 200603-09
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                                            http://security.gentoo.org/
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  Severity: Low
     Title: SquirrelMail: Cross-site scripting and IMAP command
            injection
      Date: March 12, 2006
      Bugs: #123781
        ID: 200603-09

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Synopsis
========

SquirrelMail is vulnerable to several cross-site scripting
vulnerabilities and IMAP command injection.

Background
==========

SquirrelMail is a webmail package written in PHP. It supports IMAP and
SMTP protocols.

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

    -------------------------------------------------------------------
     Package                   /  Vulnerable  /             Unaffected
    -------------------------------------------------------------------
  1  mail-client/squirrelmail       < 1.4.6                   >= 1.4.6

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

SquirrelMail does not validate the right_frame parameter in
webmail.php, possibly allowing frame replacement or cross-site
scripting (CVE-2006-0188). Martijn Brinkers and Scott Hughes discovered
that MagicHTML fails to handle certain input correctly, potentially
leading to cross-site scripting (only Internet Explorer,
CVE-2006-0195). Vicente Aguilera reported that the
sqimap_mailbox_select function did not strip newlines from the mailbox
or subject parameter, possibly allowing IMAP command injection
(CVE-2006-0377).

Impact
======

By exploiting the cross-site scripting vulnerabilities, 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. A remote attacker could exploit the IMAP command
injection to execute arbitrary IMAP commands on the configured IMAP
server.

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-1.4.6"

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

References
==========

  [ 1 ] CVE-2006-0188
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0188
  [ 2 ] CVE-2006-0195
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0195
  [ 3 ] CVE-2006-0377
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0377

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

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

  http://security.gentoo.org/glsa/glsa-200603-09.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 2006 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

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