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[gentoo-announce] [ GLSA 201206-34 ] msmtp: X.509 NULL spoofing vulnerability

Posted on 25 June 2012
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201206-34
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http://security.gentoo.org/
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Severity: Normal
Title: msmtp: X.509 NULL spoofing vulnerability
Date: June 25, 2012
Bugs: #293647
ID: 201206-34

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

Background
==========
msmtp is an SMTP client and SMTP plugin for mail user agents such as
Mutt.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 mail-mta/msmtp < 1.4.19 >= 1.4.19

Description
===========
A vulnerability have been discovered in msmtp. 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 msmtp.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All msmtp users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-mta/msmtp-1.4.19"

References
==========
[ 1 ] CVE-2009-3942
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3942

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

http://security.gentoo.org/glsa/glsa-201206-34.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


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