[ GLSA 200404-05 ] ipsec-tools contains an X.509 certificates vulnerability

[Kurt Lieber <klieber () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200404-05
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                                             http://security.gentoo.org
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  Severity: High
     Title: ipsec-tools contains an X.509 certificates vulnerability.

      Date: April 07, 2004 
      Bugs: #47013
        ID: 200404-05

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Synopsis
========

ipsec-tools contains a vulnerability that affects connections
authenticated  with X.509 certificates.

Background
==========

From http://ipsec-tools.sourceforge.net/ :

"IPsec-Tools is a port of KAME's IPsec utilities to the Linux-2.6 IPsec
implementation."

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

    -------------------------------------------------------------------
     Package                   /   Vulnerable   /           Unaffected
    -------------------------------------------------------------------
     net-firewall/ipsec-tools       <= 0.2.4                  >= 0.2.5

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

racoon (a utility in the ipsec-tools package) does not verify digital
signatures on Phase1 packets. This means that anybody holding the
correct X.509 certificate would be able to establish a connection, even
if they did not have the corresponding private key.

Impact
======

Since digital signatures are not verified by the racoon tool, an
attacker may be able to connect to the VPN gateway and/or execute a
man-in-the-middle attack.

Workaround
==========

A workaround is not currently known for this issue. All users are
advised to upgrade to the latest version of the affected package.

Resolution
==========

ipsec-tools users should upgrade to version 0.2.5 or later:

    # emerge sync

    # emerge -pv ">=net-firewall/ipsec-tools-0.2.5"
    # emerge ">=net-firewall/ipsec-tools-0.2.5"

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
http://bugs.gentoo.org.

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