Description
The LDAP server in Active Directory in Microsoft Windows 2000 SP4 and Server 2003 SP1 and SP2 responds differently to a failed bind attempt depending on whether the user account exists and is permitted to login, which allows remote attackers to enumerate valid usernames via a series of LDAP bind requests, as demonstrated by ldapuserenum.
Metrics
CVSS 2.0 5.0/10
AV:N/AC:L/Au:N/C:P/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://labs.portcullis.co.uk/application/ldapuserenum/
- http://www.portcullis-security.com/294.php
- http://www.securityfocus.com/bid/32305Exploit
- https://exchange.xforce.ibmcloud.com/vulnerabilities/46628
- http://labs.portcullis.co.uk/application/ldapuserenum/
- http://www.portcullis-security.com/294.php
- http://www.securityfocus.com/bid/32305Exploit
- https://exchange.xforce.ibmcloud.com/vulnerabilities/46628
Timeline
- Published
- Nov 17, 2008
- Last modified
- Jun 16, 2026
- NVD status
- Modified