Reported January 23, 2001, by Microsoft.
- Windows NT 4.0, all editions
An issue with loose permissions on the mutex that governs access to network resources has been discovered. A malicious attacker who can log on to the NT machine interactively can launch code that monopolizes the mutex, causing the machine to be unavailable on the network.
Microsoft has released a security bulletin, MS01-003.
Discovered by Arne Vidstrom.