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

CVSS Meta Temp Score
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CTI Interest Score
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8.1$5k-$25k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows 10/Server 2008/Server 2008 R2/Server 2012/Server 2012 R2. It has been classified as critical. The affected element is an unknown function in the library win32k.sys. This manipulation causes access control. This vulnerability is tracked as CVE-2016-3349. The attack is possible to be carried out remotely. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows 10/Server 2008/Server 2008 R2/Server 2012/Server 2012 R2 (Operating System). It has been declared as critical. Affected by this vulnerability is an unknown code block in the library win32k.sys. 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 summary by CVE is:

The kernel-mode drivers in Microsoft Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 allow local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."

The weakness was disclosed 09/13/2016 with Microsoft as MS16-106 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. This vulnerability is known as CVE-2016-3349 since 03/15/2016. The exploitation appears to be easy. The attack can be launched remotely. The requirement for exploitation is a single authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/16/2022). MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 93466 (MS16-106: Security Update for Microsoft Graphics Component (3185848)), 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 91275 (Microsoft Graphics Component Remote Code Execution Vulnerabilities (MS16-106)).

Applying the patch MS16-106 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 (93466) and SecurityFocus (BID 92783†). The entries VDB-91536, VDB-91538, VDB-91539 and VDB-91540 are pretty similar. 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: 8.3
VulDB Meta Temp Score: 8.1

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
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: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 93466
Nessus Name: MS16-106: Security Update for Microsoft Graphics Component (3185848)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 855201
OpenVAS Name: Microsoft Graphics Component Multiple Vulnerabilities (3185848)
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: MS16-106

Timelineinfo

03/15/2016 🔍
09/13/2016 +182 days 🔍
09/13/2016 +0 days 🔍
09/13/2016 +0 days 🔍
09/14/2016 +1 days 🔍
09/14/2016 +0 days 🔍
09/16/2022 +2193 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS16-106
Organization: Microsoft
Status: Confirmed

CVE: CVE-2016-3349 (🔍)
GCVE (CVE): GCVE-0-2016-3349
GCVE (VulDB): GCVE-100-91537
SecurityFocus: 92783 - Microsoft Windows Kernel 'Win32k.sys' CVE-2016-3349 Local Privilege Escalation Vulnerability
SecurityTracker: 1036786

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

Entryinfo

Created: 09/14/2016 16:59
Updated: 09/16/2022 09:43
Changes: 09/14/2016 16:59 (65), 04/07/2017 13:30 (13), 09/16/2022 09:39 (3), 09/16/2022 09:43 (1)
Complete: 🔍
Cache ID: 216::103

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

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