Microsoft Windows Vista SP2 up to Server 2012 R2 Kernel Mode Driver win32k.sys access control

CVSS Meta Temp Score
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CTI Interest Score
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8.0$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Microsoft Windows Vista SP2 up to Server 2012 R2. This affects an unknown part in the library win32k.sys of the component Kernel Mode Driver. The manipulation leads to access control. This vulnerability is documented as CVE-2016-0094. The attack can be initiated remotely. Additionally, an exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

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 code in the library win32k.sys of the component Kernel Mode Driver. 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 03/08/2016 by Nils with Google Project Zero as MS16-034 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. The identification of this vulnerability is CVE-2016-0094 since 12/04/2015. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.

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 89756 (MS16-034: Security Update for Windows Kernel-Mode Drivers to Address Elevation of Privilege (3143145)), 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 91185 (Microsoft Windows Kernel-Mode Drivers Elevation of Privilege Vulnerability (MS16-034)).

Applying the patch MS16-034 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 Exploit-DB (39647), Tenable (89756), SecurityFocus (BID 84066†) and Vulnerability Center (SBV-57109†). zdnet.com is providing further details. Entries connected to this vulnerability are available at VDB-81265, VDB-81266, VDB-81267 and VDB-81268. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 7.9

VulDB Base Score: 9.0
VulDB Temp Score: 8.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 89756
Nessus Name: MS16-034: Security Update for Windows Kernel-Mode Drivers to Address Elevation of Privilege (3143145)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 802074
OpenVAS Name: Microsoft Kernel-Mode Drivers Privilege Elevation Vulnerabilities (3143145)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Patch: MS16-034

Timelineinfo

12/04/2015 🔍
03/08/2016 +95 days 🔍
03/08/2016 +0 days 🔍
03/08/2016 +0 days 🔍
03/08/2016 +0 days 🔍
03/09/2016 +1 days 🔍
03/09/2016 +0 days 🔍
03/09/2016 +0 days 🔍
03/23/2025 +3301 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS16-034
Researcher: Nils
Organization: Google Project Zero
Status: Confirmed

CVE: CVE-2016-0094 (🔍)
GCVE (CVE): GCVE-0-2016-0094
GCVE (VulDB): GCVE-100-81281
SecurityFocus: 84066 - Microsoft Windows Kernel 'Win32k.sys' CVE-2016-0094 Local Privilege Escalation Vulnerability
SecurityTracker: 1035212
Vulnerability Center: 57109 - [MS16-034] Microsoft Windows Kernel-Mode Drivers Remote Code Execution Vulnerability - CVE-2016-0094, High

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

Entryinfo

Created: 03/09/2016 11:20
Updated: 03/23/2025 15:38
Changes: 03/09/2016 11:20 (73), 04/07/2017 13:47 (19), 07/09/2022 21:52 (5), 07/09/2022 22:01 (1), 03/23/2025 15:38 (14)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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