From: Sune Kloppenborg Jeppesen (jaervoszgentoo.org)
Date: Wed May 02 2007 - 06:04:05 CDT

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Gentoo Linux Security Advisory GLSA 200705-05
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Quagga: Denial of Service
      Date: May 02, 2007
      Bugs: #174206
        ID: 200705-05

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Synopsis
========

A vulnerability has been discovered in Quagga allowing for a Denial of
Service.

Background
==========

Quagga is a free routing daemon, supporting RIP, OSPF and BGP
protocols.

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

    -------------------------------------------------------------------
     Package / Vulnerable / Unaffected
    -------------------------------------------------------------------
  1 net-misc/quagga < 0.98.6-r2 >= 0.98.6-r2

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

The Quagga development team reported a vulnerability in the BGP routing
deamon when processing NLRI attributes inside UPDATE messages.

Impact
======

A malicious peer inside a BGP area could send a specially crafted
packet to a Quagga instance, possibly resulting in a crash of the
Quagga daemon.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Quagga users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-misc/quagga-0.98.6-r2"

References
==========

  [ 1 ] CVE-2007-1995
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1995

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

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

  http://security.gentoo.org/glsa/glsa-200705-05.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
securitygentoo.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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