Microsoft Windows Vista SP2 up to Server 2012 R2 Group Policy access control

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

A vulnerability, which was classified as critical, has been found in Microsoft Windows Vista SP2 up to Server 2012 R2 (Operating System). This issue affects an unknown function of the component Group Policy Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability.

The weakness was released 06/14/2016 by Nabeel Ahmed as MS16-072 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. The identification of this vulnerability is CVE-2016-3223 since 03/15/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue. The advisory points out:

The vulnerability could allow elevation of privilege if an attacker launches a man-in-the-middle (MiTM) attack against the traffic passing between a domain controller and the target machine.

A public exploit has been developed by Nabeel Ahmed and been published 2 months after the advisory. The exploit is available 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 91600 (MS16-072: Security Update for Group Policy (3163622)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins.

Applying the patch MS16-072 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 bulletin contains the following remark:

Domain-joined systems with servers running Windows Server 2012 and above and clients running Windows 8 and above are protected from this vulnerability by the Kerberos armoring feature.

The vulnerability is also documented in the databases at Tenable (91600) and Exploit-DB (40219). Entries connected to this vulnerability are available at 87945, 87944, 87942 and 87943.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.3

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

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91600
Nessus Name: MS16-072: Security Update for Group Policy (3163622)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 855376
OpenVAS Name: Microsoft Windows Group Policy Elevation of Privilege Vulnerability (3163622)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Patch: MS16-072

Timelineinfo

03/15/2016 🔍
06/14/2016 +91 days 🔍
06/14/2016 +0 days 🔍
06/15/2016 +1 days 🔍
06/16/2016 +1 days 🔍
08/08/2016 +53 days 🔍
08/08/2016 +0 days 🔍
08/23/2022 +2206 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS16-072
Researcher: Nabeel Ahmed
Status: Confirmed

CVE: CVE-2016-3223 (🔍)
OVAL: 🔍

SecurityTracker: 1036100
SecurityFocus: 91119

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

Entryinfo

Created: 06/16/2016 16:34
Updated: 08/23/2022 18:35
Changes: 06/16/2016 16:34 (66), 04/07/2017 13:38 (17), 08/23/2022 18:27 (4), 08/23/2022 18:35 (2)
Complete: 🔍

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