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

CVSS Meta Temp Score
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CTI Interest Score
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7.2$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 function of the file win32k.sys. The manipulation leads to access control. This vulnerability is documented as CVE-2016-0171. The attack can be initiated remotely. Additionally, an exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows Vista SP2 up to Server 2012 R2 (Operating System) and classified as critical. This issue affects an unknown code of the file win32k.sys. 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 05/10/2016 with Microsoft as MS16-062 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. The identification of this vulnerability is CVE-2016-0171 since 12/04/2015. 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 91012 (MS16-062: Security Update for Windows Kernel-Mode Drivers (3158222)), 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 91218 (Microsoft Windows Kernel Mode Multiple Vulnerabilities (MS16-062)).

Applying the patch MS16-062 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 (39959), Tenable (91012) and SecurityFocus (BID 89860†). Entries connected to this vulnerability are available at VDB-87162, VDB-87163, VDB-87164 and VDB-87165. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp 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: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91012
Nessus Name: MS16-062: Security Update for Windows Kernel-Mode Drivers (3158222)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 802074
OpenVAS Name: Microsoft Kernel-Mode Drivers Privilege Elevation Vulnerabilities (3158222)
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: 🔍
Exposure Time: 🔍

Patch: MS16-062

Timelineinfo

12/04/2015 🔍
05/10/2016 +158 days 🔍
05/10/2016 +0 days 🔍
05/10/2016 +0 days 🔍
05/10/2016 +0 days 🔍
05/11/2016 +1 days 🔍
03/18/2025 +3233 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS16-062
Organization: Microsoft
Status: Confirmed

CVE: CVE-2016-0171 (🔍)
GCVE (CVE): GCVE-0-2016-0171
GCVE (VulDB): GCVE-100-87161

OVAL: 🔍

SecurityFocus: 89860 - Microsoft Windows Kernel 'Win32k.sys' CVE-2016-0171 Local Privilege Escalation Vulnerability
SecurityTracker: 1035841

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

Entryinfo

Created: 05/11/2016 14:31
Updated: 03/18/2025 02:52
Changes: 05/11/2016 14:31 (64), 04/07/2017 13:42 (19), 08/18/2022 09:43 (4), 08/18/2022 09:48 (1), 03/18/2025 02:52 (14)
Complete: 🔍
Cache ID: 216::103

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

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