[Openswan Users] [ GLSA 200705-09 ] IPsec-Tools: Denial of Service (fwd)

[Paul Wouters]

---------- Forwarded message ----------
Date: Tue, 8 May 2007 15:11:07 +0200
From: Raphael Marichez <falco at gentoo.org>
Cc: bugtraq at securityfocus.com, full-disclosure at lists.grok.org.uk,
     security-alerts at linuxsecurity.com
To: gentoo-announce at gentoo.org
Subject: [ GLSA 200705-09 ] IPsec-Tools: Denial of Service

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Gentoo Linux Security Advisory                           GLSA 200705-09
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                                             http://security.gentoo.org/
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   Severity: Normal
      Title: IPsec-Tools: Denial of Service
       Date: May 08, 2007
       Bugs: #173219
         ID: 200705-09

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Synopsis
========

IPsec-Tools contains a vulnerability that allows a remote attacker to
crash the IPsec tunnel.

Background
==========

IPsec-Tools is a port of KAME's implementation of the IPsec utilities.
It contains a collection of network monitoring tools, including racoon,
ping, and ping6.

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

     -------------------------------------------------------------------
      Package                   /  Vulnerable  /             Unaffected
     -------------------------------------------------------------------
   1  net-firewall/ipsec-tools       < 0.6.7                   >= 0.6.7

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

The isakmp_info_recv() function in src/racoon/isakmp_inf.c does not
always check that DELETE (ISAKMP_NPTYPE_D) and NOTIFY (ISAKMP_NPTYPE_N)
packets are encrypted.

Impact
======

A remote attacker could send a specially crafted IPsec message to one
of the two peers during the beginning of phase 1, resulting in the
termination of the IPsec exchange.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All IPsec-Tools users should upgrade to the latest version:

     # emerge --sync
     # emerge --ask --oneshot --verbose ">=net-firewall/ipsec-tools-0.6.7"

References
==========

   [ 1 ] CVE-2007-1841
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1841

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

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

   http://security.gentoo.org/glsa/glsa-200705-09.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 at gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2007 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