Microsoft Windows 7/Server 2003/Server 2008 R2/Vista/XP win32k.sys resource management

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows 7/Server 2003/Server 2008 R2/Vista/XP. It has been rated as problematic. This vulnerability affects unknown code of the file win32k.sys. Performing a manipulation results in resource management. This vulnerability was named CVE-2012-2527. The attack needs to be approached locally. In addition, an exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Microsoft Windows 7/Server 2003/Server 2008 R2/Vista/XP (Operating System). This affects an unknown function of the file win32k.sys. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on confidentiality, and integrity. The summary by CVE is:

Use-after-free vulnerability in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges via a crafted application, aka "Win32k Use After Free Vulnerability."

The weakness was presented 08/14/2012 by Matthew Jurczyk with Google Security Team as MS12-055 as confirmed bulletin (Microsoft Technet). It is possible to read the advisory at technet.microsoft.com. The public release was coordinated in cooperation with Microsoft. This vulnerability is uniquely identified as CVE-2012-2527 since 05/09/2012. The exploitability is told to be easy. Attacking locally is a requirement. The successful exploitation requires a authentication. Technical details and a private exploit are known.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 61530 (MS12-055: Vulnerability in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2731847)), 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 90826 (Microsoft Windows Kernel-Mode Drivers Elevation of Privilege Vulnerability (MS12-055)).

Applying the patch MS12-055 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 (61530), SecurityFocus (BID 54873†), OSVDB (84603†), Secunia (SA50236†) and Vulnerability Center (SBV-35861†). See VDB-5942, VDB-5941, VDB-5940 and VDB-5939 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Support

  • end of life (old version)

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.4
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Private
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 61530
Nessus Name: MS12-055: Vulnerability in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2731847)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 903035
OpenVAS Name: Microsoft Windows Kernel-Mode Drivers Privilege Elevation Vulnerability (2731847)
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: MS12-055

Timelineinfo

05/09/2012 🔍
08/14/2012 +97 days 🔍
08/14/2012 +0 days 🔍
08/14/2012 +0 days 🔍
08/14/2012 +0 days 🔍
08/14/2012 +0 days 🔍
08/15/2012 +1 days 🔍
08/15/2012 +0 days 🔍
08/16/2012 +1 days 🔍
12/31/2024 +4520 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS12-055
Researcher: Matthew Jurczyk
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2012-2527 (🔍)
GCVE (CVE): GCVE-0-2012-2527
GCVE (VulDB): GCVE-100-5943

OVAL: 🔍

SecurityFocus: 54873
Secunia: 50236 - Microsoft Windows Kernel-Mode Drivers Privilege Escalation, Less Critical
OSVDB: 84603
Vulnerability Center: 35861 - [MS12-055] Microsoft Windows Win32k Use After Free Vulnerability Allows Local Privilege Escalation, High

scip Labs: https://www.scip.ch/en/?labs.20140213
See also: 🔍

Entryinfo

Created: 08/16/2012 15:56
Updated: 12/31/2024 15:57
Changes: 08/16/2012 15:56 (53), 08/19/2018 20:02 (24), 03/27/2021 11:47 (8), 03/27/2021 11:54 (1), 12/31/2024 15:57 (16)
Complete: 🔍
Cache ID: 216:D03:103

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