[ GLSA 200705-18 ] PPTPD: Denial of Service attack

[Sune Kloppenborg Jeppesen <jaervosz () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200705-18
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: PPTPD: Denial of Service attack
      Date: May 20, 2007
      Bugs: #176936
        ID: 200705-18

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Synopsis
========

A vulnerability has been reported in PPTPD which could lead to a Denial
of Service.

Background
==========

PPTPD is a Point-to-Point Tunnelling Protocol Daemon for Linux.

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

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  net-dialup/pptpd       < 1.3.4                           >= 1.3.4

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

James Cameron from HP has reported a vulnerability in PPTPD caused by
malformed GRE packets.

Impact
======

A remote attacker could exploit this vulnerability to cause a Denial of
Service on the PPTPD connection.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All PPTPD users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-dialup/pptpd-1.3.4"

References
==========

  [ 1 ] CVE-2007-0244
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0244

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

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

  http://security.gentoo.org/glsa/glsa-200705-18.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
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

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