Gentoo: 201310-02 isync: Man-in-the-Middle attack
Posted by Benjamin D. Thomas   
Gentoo A vulnerability in isync could allow remote attackers to perform man-in-the-middle attacks.
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Gentoo Linux Security Advisory                           GLSA 201310-02
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                                            http://security.gentoo.org/
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 Severity: Low
    Title: isync: Man-in-the-Middle attack
     Date: October 05, 2013
     Bugs: #458420
       ID: 201310-02

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Synopsis
========

A vulnerability in isync could allow remote attackers to perform
man-in-the-middle attacks.

Background
==========

isync is an IMAP and MailDir mailbox synchronizer.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-mail/isync               < 1.0.6                    >= 1.0.6

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

isync does not properly verify the server's hostname against the CN
field in the SSL certificate.

Impact
======

A remote server could perform man-in-the-middle attacks to disclose
passwords or obtain other sensitive information.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All isync users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-mail/isync-1.0.6"

References
==========

[ 1 ] CVE-2013-0289
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-0289

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

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

 http://security.gentoo.org/glsa/glsa-201310-02.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 2013 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