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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
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