Microsoft Windows up to XP win32k.sys input validation

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/Vista/XP. It has been classified as problematic. Affected is an unknown function of the file win32k.sys. This manipulation causes input validation. This vulnerability is handled as CVE-2012-1866. It is possible to launch the attack on the local host. Additionally, an exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability has been found in Microsoft Windows 7/Server 2003/Server 2008/Vista/XP (Operating System) and classified as problematic. Affected by this vulnerability is an unknown code block of the file win32k.sys. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, and integrity. The summary by CVE is:

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 does not properly handle user-mode input passed to kernel mode for driver objects, which allows local users to gain privileges via a crafted application, aka "Clipboard Format Atom Name Handling Vulnerability."

The weakness was released 06/12/2012 by Tarjei Mandt (j00ru) with Azimuth Security as MS12-041 as confirmed bulletin (Microsoft Technet). The advisory is shared at technet.microsoft.com. The public release was coordinated with Microsoft. This vulnerability is known as CVE-2012-1866 since 03/22/2012. An attack has to be approached locally. The requirement for exploitation is a single authentication. Technical details and also a private exploit are known.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 59459 (MS12-041: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2709162)), 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 90812 (Microsoft Windows Kernel-Mode Drivers Elevation of Privileges Vulnerability (MS12-041)).

Applying the patch MS12-041 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 (59459), SecurityFocus (BID 53817†), OSVDB (82856†), Secunia (SA49436†) and SecurityTracker (ID 1027154†). Entries connected to this vulnerability are available at VDB-5519, VDB-5520, VDB-5522 and VDB-5528. Several companies clearly confirm that VulDB is the primary source for best 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: Input validation
CWE: CWE-20
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: 59459
Nessus Name: MS12-041: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (2709162)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 902917
OpenVAS Name: Windows Kernel-Mode Drivers Privilege Elevation Vulnerabilities (2709162)
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: MS12-041

Timelineinfo

03/22/2012 🔍
06/12/2012 +81 days 🔍
06/12/2012 +0 days 🔍
06/12/2012 +0 days 🔍
06/12/2012 +0 days 🔍
06/12/2012 +0 days 🔍
06/12/2012 +0 days 🔍
06/13/2012 +1 days 🔍
06/13/2012 +0 days 🔍
03/25/2021 +3207 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS12-041
Researcher: Tarjei Mandt (j00ru)
Organization: Azimuth Security
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2012-1866 (🔍)
GCVE (CVE): GCVE-0-2012-1866
GCVE (VulDB): GCVE-100-5521

OVAL: 🔍

SecurityFocus: 53817
Secunia: 49436 - Microsoft Windows Kernel-Mode Drivers Multiple Vulnerabilities, Less Critical
OSVDB: 82856 - Microsoft Windows win32k.sys Clipboard Format Atom Name Handling Local Privilege Escalation
SecurityTracker: 1027154 - Windows Kernel-Mode Driver Bugs Lets Local Users Gain Elevated Privileges
Vulnerability Center: 35317 - [MS12-041] Microsoft Windows Kernel-Mode Clipboard Format Atom Name Handling Vulnerability, High

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

Entryinfo

Created: 06/13/2012 12:05
Updated: 03/25/2021 12:44
Changes: 06/13/2012 12:05 (56), 08/19/2018 19:51 (26), 03/25/2021 12:38 (7), 03/25/2021 12:41 (2), 03/25/2021 12:44 (1)
Complete: 🔍
Cache ID: 216::103

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

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