October 12, 2004
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.
- 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
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.
This vulnerability was announced by Microsoft.
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