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

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Microsoft Windows Vista SP2 up to Server 2012. This vulnerability affects unknown code in the library win32k.sys of the component Kernel-Mode Driver. This manipulation causes access control. This vulnerability appears as CVE-2015-2366. The attack requires local access. In addition, an exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows Vista SP2 up to Server 2012 (Operating System). It has been declared as critical. Affected by this vulnerability is some unknown processing in the library win32k.sys of the component Kernel-Mode Driver. 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:

win32k.sys in the kernel-mode drivers in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows local users to gain privileges via a crafted application, aka "Win32k Elevation of Privilege Vulnerability."

The weakness was presented 07/14/2015 as MS15-073 as confirmed bulletin (Technet). The advisory is shared at technet.microsoft.com. This vulnerability is known as CVE-2015-2366 since 03/19/2015. An attack has to be approached locally. Required for exploitation is a single authentication. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.

It is possible to download the exploit 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 84747 (MS15-073: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Elevation of Privilege (3070102)), 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 91065 (Microsoft Windows Kernel-Mode Driver Elevation of Privilege Vulnerabilities (MS15-073)).

Applying the patch MS15-073 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com.

The vulnerability is also documented in the databases at Tenable (84747), SecurityFocus (BID 75657†) and Vulnerability Center (SBV-51225†). See VDB-76450, VDB-76452, VDB-76454 and VDB-76468 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.8
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

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

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 84747
Nessus Name: MS15-073: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Elevation of Privilege (3070102)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS15-073

Timelineinfo

03/19/2015 🔍
07/14/2015 +117 days 🔍
07/14/2015 +0 days 🔍
07/14/2015 +0 days 🔍
07/15/2015 +1 days 🔍
07/15/2015 +0 days 🔍
07/06/2025 +3643 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS15-073
Status: Confirmed

CVE: CVE-2015-2366 (🔍)
GCVE (CVE): GCVE-0-2015-2366
GCVE (VulDB): GCVE-100-76453

OVAL: 🔍

SecurityFocus: 75657
SecurityTracker: 1032904
Vulnerability Center: 51225 - [MS15-073] Microsoft Windows Local Privilege Escalation in win32k.sys Kernel-Mode Drivers - CVE-2015-2366, High

scip Labs: https://www.scip.ch/en/?labs.20140213
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Entryinfo

Created: 07/15/2015 12:42
Updated: 07/06/2025 01:09
Changes: 07/15/2015 12:42 (63), 04/07/2017 14:24 (7), 05/31/2022 12:50 (3), 05/31/2022 12:57 (1), 07/06/2025 01:09 (22)
Complete: 🔍
Cache ID: 216::103

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