Microsoft Windows Active Directory LDAPS Request improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Microsoft Windows. The impacted element is an unknown function of the component Active Directory. The manipulation as part of LDAPS Request results in improper authentication. This vulnerability is known as CVE-2011-2014. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Microsoft Windows (Operating System) (affected version not known). Affected is some unknown functionality of the component Active Directory. The manipulation as part of a LDAPS Request leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, and integrity. CVE summarizes:

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."

The weakness was published 11/08/2011 by Xavier Lassoie Sébastien Godard with Autosécurité as MS11-086 as confirmed bulletin (Technet). The advisory is shared for download at technet.microsoft.com. This vulnerability is traded as CVE-2011-2014 since 05/09/2011. It is possible to launch the attack remotely. A authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 56739 (MS11-086: Vulnerability in Active Directory Could Allow Elevation of Privilege (2630837)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90754 (Microsoft Active Directory Elevation of Privilege Vulnerability (MS11-086)).

Upgrading eliminates this vulnerability. Applying the patch MS11-086 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 16297.

The vulnerability is also documented in the databases at Tenable (56739), SecurityFocus (BID 50570†), Secunia (SA46755†), SecurityTracker (ID 1026294†) and Vulnerability Center (SBV-33760†). Similar entries are available at VDB-4439, VDB-4436 and VDB-4438. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 7.7

VulDB Base Score: 8.1
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 56739
Nessus Name: MS11-086: Vulnerability in Active Directory Could Allow Elevation of Privilege (2630837)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 902487
OpenVAS Name: Microsoft Windows Active Directory LDAPS Authentication Bypass Vulnerability (2630837)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Patch: MS11-086
TippingPoint: 🔍
ISS Proventia IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

05/09/2011 🔍
11/08/2011 +182 days 🔍
11/08/2011 +0 days 🔍
11/08/2011 +0 days 🔍
11/08/2011 +0 days 🔍
11/08/2011 +0 days 🔍
11/08/2011 +0 days 🔍
11/09/2011 +1 days 🔍
11/21/2011 +12 days 🔍
01/26/2025 +4815 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS11-086
Researcher: Xavier Lassoie Sébastien Godard
Organization: Autosécurité
Status: Confirmed

CVE: CVE-2011-2014 (🔍)
GCVE (CVE): GCVE-0-2011-2014
GCVE (VulDB): GCVE-100-4440

OVAL: 🔍

SecurityFocus: 50570
Secunia: 46755 - Microsoft Windows Active Directory LDAPS Authentication Bypass, Less Critical
SecurityTracker: 1026294
Vulnerability Center: 33760 - [MS11-086] Microsoft Windows Active Directory LDAPS Authentication Bypass Vulnerability, High

See also: 🔍

Entryinfo

Created: 11/21/2011 01:00
Updated: 01/26/2025 19:15
Changes: 11/21/2011 01:00 (81), 04/04/2017 16:57 (6), 03/19/2021 17:43 (4), 03/19/2021 17:50 (1), 01/12/2025 22:32 (16), 01/26/2025 19:15 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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