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  3. Microsoft Protected Extensible Authentication Protocol Memory Corruption Vulnerability

Microsoft Protected Extensible Authentication Protocol Memory Corruption Vulnerability

Risk

High

Date Discovered

December 8, 2009

Description

The implementation of the Microsoft Protected Extensible Authentication Protocol (PEAP) used by Microsoft's Internet Authentication System is prone to a remote memory-corruption vulnerability. A remote attacker can exploit this issue to execute arbitrary code with SYSTEM-level privileges. Successful exploits will completely compromise affected computers. Failed exploit attempts will result in a denial-of-service condition.

Technologies Affected

  • Microsoft Windows Server 2008 Datacenter Edition SP2
  • Microsoft Windows Server 2008 Enterprise Edition SP2
  • Microsoft Windows Server 2008 Standard Edition SP2
  • Microsoft Windows Server 2008 for 32-bit Systems SP2
  • Microsoft Windows Server 2008 for Itanium-based Systems SP2
  • Microsoft Windows Server 2008 for x64-based Systems SP2
  • Microsoft Windows Vista Business 64-bit edition SP2
  • Microsoft Windows Vista Business SP2
  • Microsoft Windows Vista Enterprise 64-bit edition SP2
  • Microsoft Windows Vista Enterprise SP2
  • Microsoft Windows Vista Home Basic 64-bit edition SP2
  • Microsoft Windows Vista Home Basic SP2
  • Microsoft Windows Vista Home Premium 64-bit edition SP2
  • Microsoft Windows Vista Home Premium SP2
  • Microsoft Windows Vista SP2
  • Microsoft Windows Vista Ultimate 64-bit edition SP2
  • Microsoft Windows Vista Ultimate SP2
  • Microsoft Windows Vista x64 Edition SP2
  • Nortel Networks CallPilot 1002rp
  • Nortel Networks CallPilot 1005r
  • Nortel Networks CallPilot 201i
  • Nortel Networks CallPilot 202i
  • Nortel Networks CallPilot 600r
  • Nortel Networks CallPilot 703t
  • Nortel Networks Contact Center - Symposium Agent
  • Nortel Networks Contact Center - TAPI Server
  • Nortel Networks Contact Center Administration
  • Nortel Networks Contact Center Express
  • Nortel Networks Contact Center Manager Server
  • Nortel Networks Contact Center Multimedia
  • Nortel Networks Contact Center NCC
  • Nortel Networks Self-Service - CCSS7
  • Nortel Networks Self-Service CCXML
  • Nortel Networks Self-Service MPS 1000
  • Nortel Networks Self-Service MPS 500
  • Nortel Networks Self-Service Peri Application
  • Nortel Networks Self-Service Speech Server
  • Nortel Networks Self-Service VoiceXML
  • Nortel Networks Self-Service WVADS

Recommendations

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

If global access isn't needed, block access at the network perimeter to computers hosting the vulnerable operating system.

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

Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity such as unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.
An advisory and updates are available. 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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