Operating System:

[Win]

Published:

11 March 2009

Protect yourself against future threats.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                          ESB-2009.0222 -- [Win]
        Vulnerabilities in DNS and WINS Server Could Allow Spoofing
                               11 March 2009

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              DNS Server
                      WINS Server
Publisher:            Microsoft
Operating System:     Windows 2000
                      Windows Server 2003
                      Windows Server 2008
Impact:               Provide Misleading Information
Access:               Remote/Unauthenticated
CVE Names:            CVE-2009-0234 CVE-2009-0233 CVE-2009-0094
                      CVE-2009-0093

Ref:                  AL-2009.0016

Original Bulletin:  
  http://www.microsoft.com/technet/security/Bulletin/MS09-008.mspx

- --------------------------BEGIN INCLUDED TEXT--------------------

Microsoft Security Bulletin MS09-008 - Important

Vulnerabilities in DNS and WINS Server Could Allow Spoofing (962238)

   Published: March 10, 2009

   Version: 1.0

General Information

Executive Summary

   This security update resolves two privately reported vulnerabilities
   and two publicly disclosed vulnerabilities in Windows DNS server and
   Windows WINS server. These vulnerabilities could allow a remote
   attacker to redirect network traffic intended for systems on the
   Internet to the attacker's own systems.

   This security update is rated Important for all supported editions of
   Microsoft Windows 2000 Server, Windows Server 2003, and Windows Server
   2008. For more information, see the subsection, Affected and
   Non-Affected Software, in this section.

   The security update addresses the vulnerabilities by correcting the
   way that Windows DNS servers cache and validate queries, and by
   modifying the way that Windows DNS servers and Windows WINS servers
   handle WPAD and ISATAP registration. For more information about the
   vulnerabilities, see the Frequently Asked Questions (FAQ) subsection
   for the specific vulnerability entry under the next section,
   Vulnerability Information.

   Recommendation. The majority of customers have automatic updating
   enabled and will not need to take any action because this security
   update will be downloaded and installed automatically. Customers who
   have not enabled automatic updating need to check for updates and
   install this update manually. For information about specific
   configuration options in automatic updating, see Microsoft
   Knowledge Base Article 294781.

   For administrators and enterprise installations, or end users who want
   to install this security update manually, Microsoft recommends that
   customers apply the update at the earliest opportunity using update
   management software, or by checking for updates using the
   Microsoft Update service.

Affected Software

   DNS server on Microsoft Windows 2000 Server Service Pack 4

   WINS server on Microsoft Windows 2000 Server Service Pack 4

   DNS server on Windows Server 2003 Service Pack 1 and Windows
   Server 2003 Service Pack 2

   WINS server on Windows Server 2003 Service Pack 1 and Windows
   Server 2003 Service Pack 2

   DNS server on Windows Server 2003 x64 Edition and Windows Server
   2003 x64 Edition Service Pack 2

   WINS server on Windows Server 2003 x64 Edition and Windows Server
   2003 x64 Edition Service Pack 2

   DNS server on Windows Server 2003 with SP1 for Itanium-based
   Systems and Windows Server 2003 with SP2 for Itanium-based Systems

   WINS server on Windows Server 2003 with SP1 for Itanium-based
   Systems and Windows Server 2003 with SP2 for Itanium-based Systems

   DNS server on Windows Server 2008 for 32-bit Systems

   DNS server on Windows Server 2008 for x64-based Systems

Vulnerability Information

DNS Server Query Validation Vulnerability - CVE-2009-0233

   A spoofing vulnerability exists in Windows DNS server. This
   vulnerability could allow a remote unauthenticated attacker to quickly
   and reliably spoof responses and insert records into the DNS server's
   cache, thereby redirecting Internet traffic.

Workarounds for DNS Server Query Validation Vulnerability - CVE-2009-0233

   Microsoft has not identified any workarounds for this vulnerability.

DNS Server Response Validation Vulnerability - CVE-2009-0234

   A response validation vulnerability exists in Windows DNS Server. The
   vulnerability could allow an unauthenticated remote attacker to send
   specially crafted queries to a DNS server so as to allow greater
   predictability of transaction IDs used by the DNS server and thus to
   redirect Internet traffic from legitimate locations.

Workarounds for DNS Server Response Validation Vulnerability - CVE-2009-0234

   Microsoft has not identified any workarounds for this vulnerability.

DNS Server Vulnerability in WPAD Registration Vulnerability- CVE-2009-0093

   A man-in-the-middle attack vulnerability exists in Windows DNS servers
   where dynamic update is used and ISATAP and WPAD are not already
   registered in DNS. This vulnerability could allow a remote
   authenticated attacker to spoof a web proxy thereby redirect Internet
   traffic to an address of the attacker's choice.

Workarounds for DNS Server Vulnerability in WPAD Registration Vulnerability-
CVE-2009-0093

   Create a WPAD.DAT Proxy Auto Configuration File on a Host Named WPAD
   in Your Organization to Direct Web Browsers to Your Organization's
   Proxy

WPAD WINS Server Registration Vulnerability - CVE-2009-0094

   A man-in-the-middle attack vulnerability exists in Windows WINS
   servers. This vulnerability could allow a remote authenticated
   attacker to spoof a web proxy and thereby redirect Internet traffic to
   an address of the attacker's choice.

Workarounds for WPAD WINS Server Registration Vulnerability - CVE-2009-0094

   Create a WPAD.DAT Proxy Auto Configuration File on a Host Named WPAD
   in Your Organization to Direct Web Browsers to Your Organization's
   Proxy

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================

-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967

iD8DBQFJtv7CNVH5XJJInbgRAiATAJ95Qe9l07LFh85Gw6qFvHe45TeBxQCeKfEO
5O3ESWkE6bXxruDAp34rtlM=
=IlW+
-----END PGP SIGNATURE-----