Vulnerability Note VU#639428

Microsoft Windows 2000 LSASS fails to properly handle certain LDAP messages

Original Release date: 13 Apr 2004 | Last revised: 13 Apr 2004


A vulnerability exists in the Lightweight Directory Access Protocol (LDAP) message processing of the Windows 2000 domain controller. An attacker may be able to cause a denial-of-service condition to the vulnerable Active Directory domain.


A vulnerability exists in the processing of Lightweight Directory Access Protocol (LDAP) messages by the Windows 2000 domain controller. An attacker may be able send a crafted LDAP message to the vulnerable system and stop the authentication service for the Active Directory domain to stop.


A remote attacker may be able to stop the authentication service, causing a denial-of-service condition for the Active Directory domain.


Apply a patch from the vendor

Microsoft Security Bulletin MS04-011 contains patch information to resolve this issue.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Microsoft CorporationAffected-13 Apr 2004
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



Thanks to Microsoft for reporting this vulnerability.

This document was written by Jason A Rafail.

Other Information

  • CVE IDs: CAN-2003-0663
  • Date Public: 13 Apr 2004
  • Date First Published: 13 Apr 2004
  • Date Last Updated: 13 Apr 2004
  • Severity Metric: 4.94
  • Document Revision: 2


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