Microsoft Windows up to Server 2016 win32k.sys access control

CVSS Meta Temp Score
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CTI Interest Score
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7.6$5k-$25k0.00

A vulnerability was found in Microsoft Windows up to Server 2016 (Operating System). It has been rated as critical. Affected by this issue is some unknown functionality in the library 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 bug was discovered 11/08/2016. The weakness was published 11/08/2016 with Zero Day Initiative (ZDI) as MS16-135 as confirmed bulletin (Technet). The advisory is available at technet.microsoft.com. This vulnerability is handled as CVE-2016-7246 since 09/09/2016. The exploitation is known to be easy. Local access is required to approach this attack. A simple authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 94636 (MS16-135: Security Update for Windows Kernel-Mode Drivers (3199135)), 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 91294 (Microsoft Security Update for Windows Kernel-Mode Drivers (MS16-135)).

Applying the patch MS16-135 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 vulnerability database at Tenable (94636). Similar entries are available at 93407, 93408, 93409 and 93411.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
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: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 94636
Nessus Name: MS16-135: Security Update for Windows Kernel-Mode Drivers (3199135)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802730
OpenVAS Name: Microsoft Windows Kernel-Mode Drivers Multiple Vulnerabilities (3199135)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS16-135

Timelineinfo

09/09/2016 🔍
11/08/2016 +60 days 🔍
11/08/2016 +0 days 🔍
11/08/2016 +0 days 🔍
11/08/2016 +0 days 🔍
11/08/2016 +0 days 🔍
11/09/2016 +1 days 🔍
11/10/2016 +1 days 🔍
09/30/2022 +2150 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS16-135
Organization: Zero Day Initiative (ZDI)
Status: Confirmed

CVE: CVE-2016-7246 (🔍)
OVAL: 🔍

SecurityTracker: 1037251
SecurityFocus: 94063 - Microsoft Windows Kernel 'Win32k.sys' CVE-2016-7246 Local Privilege Escalation Vulnerability

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

Entryinfo

Created: 11/09/2016 10:36
Updated: 09/30/2022 08:54
Changes: 11/09/2016 10:36 (79), 07/07/2019 18:24 (5), 09/30/2022 08:54 (4)
Complete: 🔍

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