Microsoft Windows Internet Protocol Validation Remote Code Execution Vulnerability

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.

Symantec Vulnerability Assessment
Symantec Vulnerability Assessment detects and reports this vulnerability. Click here for the advisory released April 14, 2005.

Symantec Enterprise Security Manager
Symantec Enterprise Security Manager™ posted an update to the OS Patch Policy that detects and reports systems that are not patched against this vulnerability. Click here for the advisory released April 14, 2005.

Symantec Enterprise Security Manager Network Assessment Module detects and reports this vulnerability. Click here for the advisory released September 20, 2005.

Platforms Affected
Avaya DefinityOne Media Servers
Avaya IP600 Media Servers
Avaya S3400 Message Application Server
Avaya S8100 Media Servers

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

Recommendations
Block external access at the network boundary, unless service is required by external parties.
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 Windows 2000 Advanced Server SP4:

Microsoft Windows 2000 Advanced Server SP3:

Microsoft Windows 2000 Advanced Server SP2:
Microsoft Windows 2000 Advanced Server SP1:
Microsoft Windows 2000 Advanced Server :
Microsoft Windows 2000 Datacenter Server SP4:

Microsoft Windows 2000 Datacenter Server SP3:

Microsoft Windows 2000 Datacenter Server SP2:
Microsoft Windows 2000 Datacenter Server SP1:
Microsoft Windows 2000 Datacenter Server :
Microsoft Windows 2000 Professional SP4:

Microsoft Windows 2000 Professional SP3:

Microsoft Windows 2000 Professional SP2:
Microsoft Windows 2000 Professional SP1:
Microsoft Windows 2000 Professional :
Microsoft Windows 2000 Server SP4:

Microsoft Windows 2000 Server SP3:

Microsoft Windows 2000 Server SP2:
Microsoft Windows 2000 Server SP1:
Microsoft Windows 2000 Server :
Microsoft Windows XP 64-bit Edition SP1:

Microsoft Windows XP 64-bit Edition :

Microsoft Windows XP 64-bit Edition Version 2003 SP1:
Microsoft Windows XP 64-bit Edition Version 2003 :
Microsoft Windows XP Embedded SP1:
Microsoft Windows XP Embedded :
Microsoft Windows XP Home SP1:

Microsoft Windows XP Home :

Microsoft Windows XP Media Center Edition SP1:
Microsoft Windows XP Media Center Edition :
Microsoft Windows XP Professional SP1:

Microsoft Windows XP Professional :

Microsoft Windows XP Tablet PC Edition SP1:
Microsoft Windows XP Tablet PC Edition :

References
Source: Microsoft Security Bulletin MS05-019
URL: http://www.microsoft.com/technet/security/Bulletin/MS05-019.mspx

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

Copyright (c) 2008 by Symantec Corp.
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.

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