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[ GLSA 201101-06 ] IO::Socket::SSL: Certificate validation error
From: Stefan Behte <craig () gentoo org>
Date: Sun, 16 Jan 2011 12:11:32 +0100

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Gentoo Linux Security Advisory                           GLSA 201101-06
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: IO::Socket::SSL: Certificate validation error
      Date: January 16, 2011
      Bugs: #276360
        ID: 201101-06

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Synopsis
========

An error in the hostname matching of IO::Socket::SSL might enable
remote attackers to conduct man-in-the-middle attacks.

Background
==========

IO::Socket::SSL is a Perl class implementing an object oriented
interface to SSL sockets.

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

    -------------------------------------------------------------------
     Package                 /  Vulnerable  /               Unaffected
    -------------------------------------------------------------------
  1  dev-perl/IO-Socket-SSL       < 1.26                       >= 1.26

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

The vendor reported that IO::Socket::SSL does not properly handle
Common Name (CN) fields.

Impact
======

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

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All IO::Socket::SSL users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-perl/IO-Socket-SSL-1.26"

References
==========

  [ 1 ] CVE-2009-3024
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3024

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

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

  http://security.gentoo.org/glsa/glsa-201101-06.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 () gentoo org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2011 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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