MS11-086: Vulnerability in Active Directory Could Allow Elevation of Privilege (2630837)

high Nessus Plugin ID 56739


The installed version of Active Directory is affected by a vulnerability that could allow elevation of privileges.


The 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.


Microsoft has released a set of patches for Windows XP, 2003, Vista, 2008, 7, and 2008 R2.

See Also

Plugin Details

Severity: High

ID: 56739

File Name: smb_nt_ms11-086.nasl

Version: 1.17

Type: local

Agent: windows

Published: 11/8/2011

Updated: 11/15/2018

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

Vector: AV:N/AC:H/Au:N/C:C/I:C/A:C

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 11/8/2011

Vulnerability Publication Date: 11/8/2011

Reference Information

CVE: CVE-2011-2014

BID: 50570

MSFT: MS11-086

MSKB: 2601626, 2616310