The OpenNET Project
 
Search (keywords):  SOFT ARTICLES TIPS & TRICKS SECURITY
LINKS NEWS MAN DOCUMENTATION


[ GLSA 200702-06 ] BIND: Denial of Service


<< Previous INDEX Search src / Print Next >>
Date: Sat, 17 Feb 2007 22:50:15 +0100
From: Raphael Marichez <falco@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200702-06 ] BIND: Denial of Service
Message-ID: <20070217215015.GH15700@falco.falcal.net.>
Mail-Followup-To: gentoo-announce@gentoo.org,
        bugtraq@securityfocus.com, full-disclosure@lists.grok.org.uk,
        security-alerts@linuxsecurity.com
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
        protocol="application/pgp-signature"; boundary="9UV9rz0O2dU/yYYn"
Content-Disposition: inline
X-Web: http://falco.bz/
X-GPG-fingerprint: 04EB 153A 6B28 3E80 87A9  9B4F A77C 4BDE 021C 5BD2
X-GPG-Key: http://subkeys.pgp.net:11371/pks/lookup?op=get&search=0x021C5BD2
X-GPG-Subkey: http://subkeys.pgp.net:11371/pks/lookup?op=get&search=0x0114FC45
Organization: Gentoo Linux Security Team
User-Agent: mutt-ng/devel-r804 (Linux)
X-Virus-Scanned: antivirus-gw at tyumen.ru


--9UV9rz0O2dU/yYYn
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200702-06
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


  Severity: Normal
     Title: BIND: Denial of Service
      Date: February 17, 2007
      Bugs: #163692
        ID: 200702-06

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


Synopsis
========

ISC BIND contains two vulnerabilities allowing a Denial of Service
under certain conditions.

Background
==========

ISC BIND is the Internet Systems Consortium implementation of the
Domain Name System (DNS) protocol.

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

    -------------------------------------------------------------------
     Package       /  Vulnerable  /                         Unaffected
    -------------------------------------------------------------------
  1  net-dns/bind       < 9.3.4                               >= 9.3.4
                                                             *>= 9.2.8


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

An unspecified improper usage of an already freed context has been
reported. Additionally, an assertion error could be triggered in the
DNSSEC validation of some responses to type ANY queries with multiple
RRsets.

Impact
======

A remote attacker could crash the server through unspecified vectors
or, if DNSSEC validation is enabled, by sending certain crafted ANY
queries.

Workaround
==========

There is no known workaround at this time for the first issue. The
DNSSEC validation Denial of Service can be prevented by disabling
DNSSEC validation until the upgrade to a fixed version. Note that
DNSSEC validation is disabled on a default configuration.

Resolution
==========

All ISC BIND 9.3 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-dns/bind-9.3.4"


All ISC BIND 9.2 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-dns/bind-9.2.8"


References
==========

  [ 1 ] CVE-2007-0493
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0493
  [ 2 ] CVE-2007-0494
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-CVE-2007-0494

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

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

  http://security.gentoo.org/glsa/glsa-200702-06.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

--9UV9rz0O2dU/yYYn
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)

iQEVAwUBRdd4lzvRww8BFPxFAQINiAf9EzMpGuzxGaxRsLy3AzNot5vLRw38u5dU
wmn5Ekz4A+PH6OEFxDTbsz3NVfEEUUIWNGGm9l5JSMdrC4v34pIG2K2CTMyS/xiG
6FGGNuwgoH+kvUuNRmqLL6HX450OivwJWSRIULMwyOVtSsdRApUf+fp5IlNdm2yT
aiIZTv738Lls1XRdauluiPq+AZmlQiMb9FdSobGliluWs2OLBh4sBCSfSSjmdUQ4
w9jCApBbhZIgVQ8Px+/yrEVrD0GWEILH842S3db34zZHxV6bRaA0dVhFXsQyfs4J
T8jwx0DAfRW5aWs6rQRxD2wx3Py5Y+aWP2FwqjlfTJRW4Z/5jbbsYA==
=NUW4
-----END PGP SIGNATURE-----

--9UV9rz0O2dU/yYYn--


<< Previous INDEX Search src / Print Next >>



Партнёры:
PostgresPro
Inferno Solutions
Hosting by Hoster.ru
Хостинг:

Закладки на сайте
Проследить за страницей
Created 1996-2024 by Maxim Chirkov
Добавить, Поддержать, Вебмастеру