Gentoo alert: ipsec-tools contains an X.509 certificates vulnerability

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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=20
      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       <=3D 0.2.4                  >=3D 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 ">=3Dnet-firewall/ipsec-tools-0.2.5"
    # emerge ">=3Dnet-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
[e-mail:security@gentoo.org] or alternatively, you may file a bug at
http://bugs.gentoo.org.