Date Discovered November 10, 2009
Description The Microsoft Windows License Logging Server is prone to a remote heap-based buffer-overflow vulnerability because the application fails to perform adequate boundary checks on user-supplied data.
An 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.
- 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 Server SP1
- Microsoft Windows 2000 Server SP2
- Microsoft Windows 2000 Server SP3
- Microsoft Windows 2000 Server SP4
- Nortel Networks Contact Center - TAPI Server
- Nortel Networks Contact Center Express
- Nortel Networks Enterprise VoIP TM-CS1000
Block external access at the network boundary, unless external parties require service. Filter access to the affected computer at the network boundary if global access isn't needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.
Deploy network intrusion detection systems to monitor network traffic for malicious activity. Use NIDS to detect suspicious or anomalous network traffic. Monitor logs for signs of malicious activity.
Implement multiple redundant layers of security.
Memory-protection schemes such as nonexecutable stack and heap configurations and randomly mapped memory segments will complicate exploits of memory-corruption vulnerabilities.
The vendor has released an advisory and updates. Please see the references for details.
Credits Cody Pierce working with the Zero Day Initiative
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