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Microsoft Windows Internet Protocol Validation Remote Code Execution Vulnerability

Risk

High

Date Discovered

April 12, 2005

Description

Microsoft Windows is reported prone to a remote code execution vulnerability. It is reported that the vulnerability manifests when an affected Microsoft platform receives and processes an especially malformed TCP/IP packet. Reports indicate that the immediate consequences of exploitation of this issue are a denial of service.

Technologies Affected

  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Advanced Server SP1
  • Microsoft Windows 2000 Advanced Server SP2
  • Microsoft Windows 2000 Advanced Server SP3
  • Microsoft Windows 2000 Advanced Server SP4
  • Microsoft Windows 2000 Datacenter Server
  • Microsoft Windows 2000 Datacenter Server SP1
  • Microsoft Windows 2000 Datacenter Server SP2
  • Microsoft Windows 2000 Datacenter Server SP3
  • Microsoft Windows 2000 Datacenter Server SP4
  • Microsoft Windows 2000 Professional
  • Microsoft Windows 2000 Professional SP1
  • Microsoft Windows 2000 Professional SP2
  • Microsoft Windows 2000 Professional SP3
  • Microsoft Windows 2000 Professional SP4
  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Server SP1
  • Microsoft Windows 2000 Server SP2
  • Microsoft Windows 2000 Server SP3
  • Microsoft Windows 2000 Server SP4
  • Microsoft Windows XP 64-bit Edition
  • Microsoft Windows XP 64-bit Edition SP1
  • Microsoft Windows XP 64-bit Edition Version 2003
  • Microsoft Windows XP 64-bit Edition Version 2003 SP1
  • Microsoft Windows XP Embedded
  • Microsoft Windows XP Embedded SP1
  • Microsoft Windows XP Home
  • Microsoft Windows XP Home SP1
  • Microsoft Windows XP Media Center Edition
  • Microsoft Windows XP Media Center Edition SP1
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Professional SP1
  • Microsoft Windows XP Tablet PC Edition
  • Microsoft Windows XP Tablet PC Edition SP1

Recommendations

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

If applicable configure border routers and firewalls to drop malformed packets before they reach internal hosts.

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

Deploy a network intrusion detection sensor on the affected network. Flag on all suspicious and malformed packets that do not abide by a protocol RFC. Audit logs regularly for indications of possible attacks.
Microsoft has released an advisory and updates to address this issue for supported platforms. Microsoft has released revised fixes to address this and other issues. Microsoft recommends installing the revised fixes even if the previous versions have been installed.

Credits

Discovery of this vulnerability is credited to Song Liu, Hongzhen Zhou, and Neel Mehta of ISS X-Force.
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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