Microsoft Windows Vista SP2 up to Server 2012 R2 Kernel-Mode Driver win32k.sys memory corruption

CVSS Meta Temp Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Microsoft Windows Vista SP2 up to Server 2012 R2 and classified as problematic. This impacts an unknown function in the library win32k.sys of the component Kernel-Mode Driver. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2015-2546. The attack is restricted to local execution. Moreover, an exploit is present. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability has been found in Microsoft Windows Vista SP2 up to Server 2012 R2 (Operating System) and classified as problematic. Affected by this vulnerability is an unknown part in the library win32k.sys of the component Kernel-Mode Driver. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The kernel-mode driver in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, and Windows 10 allows local users to gain privileges via a crafted application, aka "Win32k Memory Corruption Elevation of Privilege Vulnerability," a different vulnerability than CVE-2015-2511, CVE-2015-2517, and CVE-2015-2518.

The weakness was disclosed 09/08/2015 by Wang Yu with FireEye, Inc. as MS15-097 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. This vulnerability is known as CVE-2015-2546 since 03/19/2015. Attacking locally is a requirement. A single authentication is necessary for exploitation. Technical details and also a exploit are known.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 85877 (MS15-097: Vulnerabilities in Microsoft Graphics Component Could Allow Remote Code Execution (3089656)), 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 91094 (Microsoft Graphics Component Remote Code Execution Vulnerabilities (MS15-097)). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 03/15/2022 with a due date of 04/05/2022:

Apply updates per vendor instructions.

Applying the patch MS15-097 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 Zero-Day.cz (192), Tenable (85877), SecurityFocus (BID 76608†) and Vulnerability Center (SBV-52525†). The entries VDB-77613, VDB-77614, VDB-77615 and VDB-77616 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

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CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Attacked

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Nessus ID: 85877
Nessus Name: MS15-097: Vulnerabilities in Microsoft Graphics Component Could Allow Remote Code Execution (3089656)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
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Zero-Day.cz: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Patch: MS15-097
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Timelineinfo

03/19/2015 🔍
09/08/2015 +173 days 🔍
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09/08/2015 +0 days 🔍
09/08/2015 +0 days 🔍
09/09/2015 +1 days 🔍
09/09/2015 +0 days 🔍
01/17/2025 +3418 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS15-097
Researcher: Wang Yu
Organization: FireEye, Inc.
Status: Confirmed

CVE: CVE-2015-2546 (🔍)
GCVE (CVE): GCVE-0-2015-2546
GCVE (VulDB): GCVE-100-77647
SecurityFocus: 76608 - Microsoft Windows Kernel Mode Driver CVE-2015-2546 Local Privilege Escalation Vulnerability
SecurityTracker: 1033485
Vulnerability Center: 52525 - [MS15-097] Microsoft Windows Remote Code Execution in the Kernel-Mode Driver - CVE-2015-2546, Critical

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

Entryinfo

Created: 09/09/2015 10:08
Updated: 01/17/2025 23:06
Changes: 09/09/2015 10:08 (63), 05/03/2019 08:03 (12), 06/14/2022 18:58 (2), 06/14/2022 19:05 (1), 04/24/2024 06:03 (26), 07/08/2024 08:42 (2), 09/09/2024 22:29 (1), 01/17/2025 23:06 (3)
Complete: 🔍
Cache ID: 216:755:103

Be aware that VulDB is the high quality source for vulnerability data.

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