Microsoft Windows NT 4.0 Remote Registry Request Dos Vulnerability

Bugtraq ID:	1331
Class:	Failure to Handle Exceptional Conditions
CVE:
Remote:	Yes
Local:	Yes
Published:	Jun 08 2000 12:00AM
Updated:	Jun 08 2000 12:00AM
Credit:	Discovered by Renaud Deraison <[email protected]> and publicized in a Microsoft Security Bulletin (MS00-040) on June 9, 2000.
Vulnerable:	Microsoft Windows NT 4.0 + Microsoft Windows NT Enterprise Server 4.0 + Microsoft Windows NT Enterprise Server 4.0 + Microsoft Windows NT Server 4.0 + Microsoft Windows NT Server 4.0 + Microsoft Windows NT Terminal Server 4.0 + Microsoft Windows NT Terminal Server 4.0 + Microsoft Windows NT Workstation 4.0 + Microsoft Windows NT Workstation 4.0
Not Vulnerable:	Microsoft Windows 2000 Professional

Microsoft Windows NT 4.0 Remote Registry Request Dos Vulnerability

In special circumstances while handling requests to access the Remote Registry Server, Windows NT 4.0 can crash due to winlogon.exe's inability to process specially malformed remote registry requests. Rebooting the machine would be required in order to regain normal functionality.

Only authenticated users on the network would be able to exploit this vulnerability. If Windows NT was configured to deny all remote registry requests, it would not be affected by this vulnerability under any conditions.