full-disclosure - [ GLSA 200411-06 ] MIME-tools: Virus detection evasion

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From: koon at gentoo.org (Thierry Carrez)
Subject: [ GLSA 200411-06 ] MIME-tools: Virus detection evasion

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Gentoo Linux Security Advisory                           GLSA 200411-06
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                                            http://security.gentoo.org/
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  Severity: Low
     Title: MIME-tools: Virus detection evasion
      Date: November 02, 2004
      Bugs: #69181
        ID: 200411-06

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Synopsis
========

MIME-tools doesn't handle empty MIME boundaries correctly. This may
prevent some virus-scanning programs which use MIME-tools from
detecting certain viruses.

Background
==========

MIME-tools is a Perl module containing functions to handle MIME
attachments.

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

    -------------------------------------------------------------------
     Package              /  Vulnerable  /                  Unaffected
    -------------------------------------------------------------------
  1  dev-perl/MIME-tools       < 5.415                        >= 5.415

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

MIME-tools doesn't correctly parse attachment boundaries with an empty
name (boundary="").

Impact
======

An attacker could send a carefully crafted email and evade detection on
some email virus-scanning programs using MIME-tools for attachment
decoding.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All MIME-tools users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-perl/MIME-tools-5.415"

References
==========

  [ 1 ] MIMEDefang announcement

http://lists.roaringpenguin.com/pipermail/mimedefang/2004-October/024959.html

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

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

  http://security.gentoo.org/glsa/glsa-200411-06.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 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/1.0

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