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  3. Microsoft SMTP Service and Exchange Routing Engine Buffer Overflow Vulnerability

Microsoft SMTP Service and Exchange Routing Engine Buffer Overflow Vulnerability

Risk

High

Date Discovered

October 12, 2004

Description

The Microsoft Windows 2003 SMTP Service and Exchange Routing Engine have been reported prone to a buffer overflow. This occurs during the processing responses to DNS lookups. Successful exploitation could allow for remote code execution in the context of the vulnerable service.

Technologies Affected

  • Avaya DefinityOne Media Servers
  • Avaya IP600 Media Servers
  • Avaya Modular Messaging (MSS) 1.1.0
  • Avaya Modular Messaging (MSS) 2.0.0
  • Avaya S3400 Message Application Server
  • Avaya S8100 Media Servers
  • Microsoft Exchange Server 2000
  • Microsoft Exchange Server 2000 SP1
  • Microsoft Exchange Server 2000 SP2
  • Microsoft Exchange Server 2000 SP3
  • Microsoft Exchange Server 2003
  • Microsoft Exchange Server 2003 SP1
  • Microsoft Windows Server 2003 Datacenter Edition
  • Microsoft Windows Server 2003 Datacenter Edition Itanium
  • Microsoft Windows Server 2003 Enterprise Edition
  • Microsoft Windows Server 2003 Enterprise Edition Itanium
  • Microsoft Windows Server 2003 Standard Edition
  • Microsoft Windows Server 2003 Web Edition
  • Microsoft Windows XP 64-bit Edition Version 2003
  • Microsoft Windows XP 64-bit Edition Version 2003 SP1

Recommendations

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

Network intrusion detection systems should be deployed to monitor network traffic for signs of anomalous or suspicious activity. This includes but is not limited to requests that include NOP sleds and unexplained ingoing and outgoing traffic. This may indicate exploitation attempts or activity that results from successful exploitation.

To limit the consequences of successful exploits, run the server in a closed or restricted environment.

Memory protection schemes such as non-executable stack/heap configurations and randomly mapped memory segments will complicate exploitation of memory corruption vulnerabilities.
Microsoft has released a bulletin that includes fixes to address this issue for supported versions of the operating system. Note that the fix for Exchange Server 2000 Service Pack 3 requires that the Exchange 2000 Server Post-Service Pack 3 (SP3) Update Rollup be installed as a prerequisite. See Knowledge Base article 870540 in the References section for further details on this rollup.

Credits

This vulnerability was announced by 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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