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Gentoo Linux Security Advisory                           GLSA 200708-08
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  Severity: High
     Title: SquirrelMail G/PGP plugin: Arbitrary code execution
      Date: August 11, 2007
      Bugs: #185010
        ID: 200708-08

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Synopsis
========

Multiple vulnerabilities have been discovered in SquirrelMail, allowing
for the remote execution of arbitrary code.

Background
==========

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

Affected packages
=================

    -------------------------------------------------------------------
     Package                   /   Vulnerable   /           Unaffected
    -------------------------------------------------------------------
  1  mail-client/squirrelmail     < 1.4.10a-r2           >= 1.4.10a-r2

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

The functions deletekey(), gpg_check_sign_pgp_mime() and gpg_recv_key()
used in the SquirrelMail G/PGP encryption plugin do not properly escape
user-supplied data.

Impact
======

An authenticated user could use the plugin to execute arbitrary code on
the server, or a remote attacker could send a specially crafted e-mail
to a SquirrelMail user, possibly leading to the execution of arbitrary
code with the privileges of the user running the underlying web server.
Note that the G/PGP plugin is disabled by default.

Workaround
==========

Enter the SquirrelMail configuration directory
(/usr/share/webapps/squirrelmail/version/htdocs/config), then execute
the conf.pl script. Select the plugins menu, then select the gpg plugin
item number in the "Installed Plugins" list to disable it. Press S to
save your changes, then Q to quit.

Resolution
==========

All SquirrelMail users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=mail-client/squirrelmail-1.4.10a-r2"

References
==========

  [ 1 ] CVE-2005-1924
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1924
  [ 2 ] CVE-2006-4169
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4169

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

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

  http://security.gentoo.org/glsa/glsa-200708-08.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@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2007 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/2.5

--

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