Microsoft Windows Vista SP2 up to Server 2012 R2 Kerberos access control

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

A vulnerability was found in Microsoft Windows Vista SP2 up to Server 2012 R2 (Operating System). It has been declared as critical. Affected by this vulnerability is an unknown part of the component Kerberos. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 08/09/2016 by Nabeel Ahmed as MS16-101 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. This vulnerability is known as CVE-2016-3237 since 03/15/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

A public exploit has been developed by Nabeel Ahmed and been published 2 months after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 92823 (MS16-101: Security Update for Windows Authentication Methods (3178465)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91260 (Microsoft Windows Authentication Methods Elevation of Privileges (MS16-101)).

Applying the patch MS16-101 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (92823) and Exploit-DB (40409). The entry 90710 is related to this item.

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CPE 2.3info

CPE 2.2info

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CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
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VulDB Reliability: 🔍

NVD Base Score: 6.7
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CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Nabeel Ahmed
Download: 🔍

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Nessus ID: 92823
Nessus Name: MS16-101: Security Update for Windows Authentication Methods (3178465)
Nessus File: 🔍
Nessus Family: 🔍

OpenVAS ID: 803909
OpenVAS Name: Microsoft Windows Privilege Escalation Vulnerabilities (3178465)
OpenVAS File: 🔍
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Patch: MS16-101

Timelineinfo

03/15/2016 🔍
08/09/2016 +147 days 🔍
08/09/2016 +0 days 🔍
08/09/2016 +0 days 🔍
08/09/2016 +0 days 🔍
08/10/2016 +1 days 🔍
09/22/2016 +43 days 🔍
09/22/2016 +0 days 🔍
09/13/2022 +2182 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS16-101
Researcher: Nabeel Ahmed
Status: Confirmed

CVE: CVE-2016-3237 (🔍)
SecurityTracker: 1036576
SecurityFocus: 92290 - Microsoft Windows Kerberos CVE-2016-3237 Security Bypass Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161215
See also: 🔍

Entryinfo

Created: 08/10/2016 12:22
Updated: 09/13/2022 16:01
Changes: 08/10/2016 12:22 (67), 04/07/2017 13:31 (20), 09/13/2022 16:01 (4)
Complete: 🔍

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