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

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Date: Sun, 20 May 2007 09:38:09 +0200
From: Sune Kloppenborg Jeppesen <jaervosz@...too.org>
To: gentoo-announce@...too.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200705-18 ] PPTPD: Denial of Service attack

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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@...too.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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