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Gentoo Linux Security Advisory                           GLSA 201206-30
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: sendmail: X.509 NULL spoofing vulnerability
     Date: June 25, 2012
     Bugs: #299120
       ID: 201206-30

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Synopsis
========

An error in the hostname matching in sendmail might enable remote
attackers to conduct man-in-the-middle attacks.

Background
==========

sendmail is a widely-used Mail Transport Agent (MTA).

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  mail-mta/sendmail            < 8.14.4                  >= 8.14.4

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

A vulnerability has been discovered in sendmail. Please review the CVE
identifier referenced below for details.

Impact
======

A remote attacker might employ a specially crafted certificate to
conduct man-in-the-middle attacks on SSL connections made using
sendmail.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All sendmail users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=mail-mta/sendmail-8.14.4"

References
==========

[ 1 ] CVE-2009-4565
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-4565

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

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

 http://security.gentoo.org/glsa/glsa-201206-30.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
https://bugs.gentoo.org.

License
=======

Copyright 2012 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