MS11-086: Vulnerability in Active Directory Could Allow Elevation of Privilege (2630837)
High Nessus Plugin ID 56739
SynopsisThe installed version of Active Directory is affected by a vulnerability that could allow elevation of privileges.
DescriptionThe remote Windows host has a version of Active Directory that fails to validate the revocation status of an SSL certificate against the CRL (Certificate Revocation List) associated with the domain account.
When Active Directory is configured to use LDAP over SSL, a remote attacker can exploit this and use a previously revoked certificate to authenticate to the Active Directory domain as the user associated with that certificate. This would give him access to the network resources or ability to run code on the affected host, subject to the privileges of that user.
SolutionMicrosoft has released a set of patches for Windows XP, 2003, Vista, 2008, 7, and 2008 R2.