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Gentoo Linux Security Advisory                           GLSA 200502-15
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  Severity: Normal
     Title: PowerDNS: Denial of Service vulnerability
      Date: February 13, 2005
      Bugs: #80713
        ID: 200502-15

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Synopsis
========

A vulnerability in PowerDNS could lead to a temporary Denial of
Service.

Background
==========

The PowerDNS Nameserver is an authoritative-only nameserver which uses
a flexible backend architecture.

Affected packages
=================

    -------------------------------------------------------------------
     Package       /  Vulnerable  /                         Unaffected
    -------------------------------------------------------------------
  1  net-dns/pdns      < 2.9.17                              >= 2.9.17

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

A vulnerability has been reported in the DNSPacket::expand method of
dnspacket.cc.

Impact
======

An attacker could cause a temporary Denial of Service by sending a
random stream of bytes to the PowerDNS Daemon.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All PowerDNS users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-dns/pdns-2.9.17"

References
==========

  [ 1 ] PowerDNS Release Notes
        http://doc.powerdns.com/changelog.html#CHANGELOG-2-9-17
  [ 2 ] PowerDNS Ticket #21
        http://ds9a.nl/cgi-bin/cvstrac/pdns/tktview?tn=21

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

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

  http://security.gentoo.org/glsa/glsa-200502-15.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 2005 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/2.0

--

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