Executive Summary

Summary
Title Vulnerability in Active Directory Could Allow Elevation of Privilege (2630837)
Informations
Name MS11-086 First vendor Publication 2011-11-08
Vendor Microsoft Last vendor Modification 2011-11-08
Severity (Vendor) Important Revision 1.0

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:C/I:C/A:C)
Cvss Base Score 9 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

Severity Rating: Important

Revision Note: V1.0 (November 8, 2011): Bulletin published.

Summary: This security update resolves a privately reported vulnerability in Active Directory, Active Directory Application Mode (ADAM), and Active Directory Lightweight Directory Service (AD LDS). The vulnerability could allow elevation of privilege if Active Directory is configured to use LDAP over SSL (LDAPS) and an attacker acquires a revoked certificate that is associated with a valid domain account and then uses that revoked certificate to authenticate to the Active Directory domain. By default, Active Directory is not configured to use LDAP over SSL.

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-287 Improper Authentication

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:13278
 
Oval ID: oval:org.mitre.oval:def:13278
Title: LDAPS Authentication Bypass Vulnerability
Description: The LDAP over SSL (aka LDAPS) implementation in Active Directory, Active Directory Application Mode (ADAM), and Active Directory Lightweight Directory Service (AD LDS) in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not examine Certificate Revocation Lists (CRLs), which allows remote authenticated users to bypass intended certificate restrictions and access Active Directory resources by leveraging a revoked X.509 certificate for a domain account, aka "LDAPS Authentication Bypass Vulnerability."
Family: windows Class: vulnerability
Reference(s): CVE-2011-2014
 Version: 9
Platform(s): Microsoft Windows XP
Microsoft Windows Vista
Microsoft Windows 7
Microsoft Windows Server 2003
Microsoft Windows Server 2008
Microsoft Windows Server 2008 R2
 Product(s):
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 3
Os 1
Os 3
Os 1
Os 2

OpenVAS Exploits

Date Description
2011-11-09 Name : Microsoft Windows Active Directory LDAPS Authentication Bypass Vulnerability ...
File : nvt/secpod_ms11-086.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
76902 Microsoft Windows Active Directory LDAPS CRL Handling Weakness Authentication...

Nessus® Vulnerability Scanner

Date Description
2011-11-08 Name : The installed version of Active Directory is affected by a vulnerability that...
File : smb_nt_ms11-086.nasl - Type : ACT_GATHER_INFO

Alert History

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0
Date Informations
2014-02-17 11:47:09
  • Multiple Updates