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  3. Microsoft Windows DNS Server Uninitialized Memory Remote Denial of Service Vulnerability

Microsoft Windows DNS Server Uninitialized Memory Remote Denial of Service Vulnerability

Risk

Medium

Date Discovered

August 9, 2011

Description

The Microsoft Windows DNS Server is prone to a remote denial-of-service vulnerability. An attacker can exploit this issue to cause the DNS server service to stop responding, denying service to legitimate users.

Technologies Affected

  • Microsoft Windows Server 2003 Datacenter Edition
  • Microsoft Windows Server 2003 Datacenter Edition Itanium SP1
  • Microsoft Windows Server 2003 Datacenter Edition SP1
  • Microsoft Windows Server 2003 Datacenter x64 Edition
  • Microsoft Windows Server 2003 Datacenter x64 Edition SP2
  • Microsoft Windows Server 2003 Enterprise Edition
  • Microsoft Windows Server 2003 Enterprise Edition Itanium SP1
  • Microsoft Windows Server 2003 Enterprise Edition SP1
  • Microsoft Windows Server 2003 Enterprise x64 Edition
  • Microsoft Windows Server 2003 Enterprise x64 Edition SP2
  • Microsoft Windows Server 2003 Itanium
  • Microsoft Windows Server 2003 Itanium SP1
  • Microsoft Windows Server 2003 Itanium SP2
  • Microsoft Windows Server 2003 Standard Edition
  • Microsoft Windows Server 2003 Standard Edition SP1
  • Microsoft Windows Server 2003 Standard Edition SP2
  • Microsoft Windows Server 2003 Standard x64 Edition
  • Microsoft Windows Server 2003 Terminal Services
  • Microsoft Windows Server 2003 Web Edition
  • Microsoft Windows Server 2003 Web Edition SP1
  • Microsoft Windows Server 2003 Web Edition SP2
  • Microsoft Windows Server 2003 x64 SP1
  • Microsoft Windows Server 2003 x64 SP2
  • Microsoft Windows Server 2008 - Sp2 Enterprise X64
  • Microsoft Windows Server 2008 Datacenter Edition
  • Microsoft Windows Server 2008 Datacenter Edition Release Candidate
  • Microsoft Windows Server 2008 Datacenter Edition SP2
  • Microsoft Windows Server 2008 Enterprise Edition
  • Microsoft Windows Server 2008 Enterprise Edition Release Candidate
  • Microsoft Windows Server 2008 Enterprise Edition SP2
  • Microsoft Windows Server 2008 R2 Datacenter
  • Microsoft Windows Server 2008 R2 Datacenter SP1
  • Microsoft Windows Server 2008 R2 Enterprise Edition
  • Microsoft Windows Server 2008 R2 Itanium
  • Microsoft Windows Server 2008 R2 Itanium SP1
  • Microsoft Windows Server 2008 R2 Standard Edition
  • Microsoft Windows Server 2008 R2 for x64-based Systems SP1
  • Microsoft Windows Server 2008 R2 x64
  • Microsoft Windows Server 2008 R2 x64 SP1
  • Microsoft Windows Server 2008 SP2 Beta
  • Microsoft Windows Server 2008 Standard Edition
  • Microsoft Windows Server 2008 Standard Edition - Gold
  • Microsoft Windows Server 2008 Standard Edition - Gold Datacenter
  • Microsoft Windows Server 2008 Standard Edition - Gold Enterprise
  • Microsoft Windows Server 2008 Standard Edition - Gold Hpc
  • Microsoft Windows Server 2008 Standard Edition - Gold Itanium
  • Microsoft Windows Server 2008 Standard Edition - Gold Standard
  • Microsoft Windows Server 2008 Standard Edition - Gold Storage
  • Microsoft Windows Server 2008 Standard Edition - Gold Web
  • Microsoft Windows Server 2008 Standard Edition - Sp2 Hpc
  • Microsoft Windows Server 2008 Standard Edition - Sp2 Storage
  • Microsoft Windows Server 2008 Standard Edition - Sp2 Web
  • Microsoft Windows Server 2008 Standard Edition Itanium
  • Microsoft Windows Server 2008 Standard Edition R2
  • Microsoft Windows Server 2008 Standard Edition R2 SP1
  • Microsoft Windows Server 2008 Standard Edition Release Candidate
  • Microsoft Windows Server 2008 Standard Edition SP2
  • Microsoft Windows Server 2008 for 32-bit Systems
  • Microsoft Windows Server 2008 for 32-bit Systems SP2
  • Microsoft Windows Server 2008 for Itanium-based Systems
  • Microsoft Windows Server 2008 for Itanium-based Systems R2
  • Microsoft Windows Server 2008 for Itanium-based Systems SP2
  • Microsoft Windows Server 2008 for x64-based Systems
  • Microsoft Windows Server 2008 for x64-based Systems R2
  • Microsoft Windows Server 2008 for x64-based Systems SP2

Recommendations

Block external access at the network boundary, unless external parties require service.

Filter access to the affected computer at the network boundary if global access isn't needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Disallow anonymous access to services. Permit access for trusted individuals only.

Restrict access to trusted and accountable users only.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.

Use NIDS to detect suspicious or anomalous network traffic. Monitor logs for signs of malicious activity.
The vendor has released an advisory and updates. Please see the references for details.

Credits

Microsoft
Copyright © Symantec Corporation.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from secure@symantec.com.

Disclaimer
The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
Symantec, Symantec products, Symantec Security Response, and secure@symantec.com are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.

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