Microsoft Windows Client/Server Run-Time Subsystem access control

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Microsoft Windows. Affected is an unknown function of the component Client/Server Run-Time Subsystem. This manipulation causes access control. This vulnerability is handled as CVE-2012-0005. It is possible to launch the attack on the local host. Additionally, an exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability has been found in Microsoft Windows (Operating System) (affected version not known) and classified as critical. Affected by this vulnerability is some unknown functionality of the component Client/Server Run-Time Subsystem. 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 Client/Server Run-time Subsystem (aka CSRSS) in the Win32 subsystem in Microsoft Windows XP SP2 and SP3, Server 2003 SP2, Vista SP2, and Server 2008 SP2, when a Chinese, Japanese, or Korean system locale is used, can access uninitialized memory during the processing of Unicode characters, which allows local users to gain privileges via a crafted application, aka "CSRSS Elevation of Privilege Vulnerability."

The weakness was released 01/10/2012 as MS12-003 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. The public release was coordinated with Microsoft. This vulnerability is known as CVE-2012-0005 since 11/09/2011. Attacking locally is a requirement. A single authentication is required for exploitation. Technical details are unknown but a private exploit is available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 57471 (MS12-003: Vulnerability in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege (2646524)), 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 90768 (Microsoft Windows Client/Server Run-Time Subsystem Elevation of Privilege Vulnerability (MS12-003)).

Upgrading eliminates this vulnerability. The upgrade is hosted for download at technet.microsoft.com. Applying the patch MS12-003 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (72003), Tenable (57471), SecurityFocus (BID 51270†), OSVDB (78206†) and Secunia (SA47479†). Additional details are provided at computerworld.com. Entries connected to this vulnerability are available at VDB-4535, VDB-4532, VDB-4534 and VDB-4533. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.8
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
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: 57471
Nessus Name: MS12-003: Vulnerability in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege (2646524)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 902499
OpenVAS Name: get_kb_item(SMB/login
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: technet.microsoft.com
Patch: MS12-003

Timelineinfo

11/09/2011 🔍
01/10/2012 +61 days 🔍
01/10/2012 +0 days 🔍
01/10/2012 +0 days 🔍
01/10/2012 +0 days 🔍
01/10/2012 +0 days 🔍
01/10/2012 +0 days 🔍
01/10/2012 +0 days 🔍
01/11/2012 +0 days 🔍
01/21/2012 +10 days 🔍
01/05/2025 +4733 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS12-003
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2012-0005 (🔍)
GCVE (CVE): GCVE-0-2012-0005
GCVE (VulDB): GCVE-100-4531

OVAL: 🔍

X-Force: 72003
SecurityFocus: 51270 - Microsoft Windows CSRSS CVE-2012-0005 Local Privilege Escalation Vulnerability
Secunia: 47479 - Microsoft Windows Client/Server Run-time Subsystem Privilege Escalation, Less Critical
OSVDB: 78206 - Microsoft Windows Client/Server Run-time Subsystem (CSRSS) Unicode Character Parsing Local Privilege Escalation
SecurityTracker: 1026495 - Windows Client-Server Run-time Subsystem Unicode Processing Flaw Lets Local Users Gain Elevated Privileges
Vulnerability Center: 34197 - [MS12-003] Microsoft Windows CSRSS Local Privilege Escalation Vulnerability, High

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 01/21/2012 01:00
Updated: 01/05/2025 16:00
Changes: 01/21/2012 01:00 (53), 04/07/2017 16:01 (26), 03/20/2021 12:09 (7), 03/20/2021 12:12 (2), 03/20/2021 12:16 (1), 01/05/2025 16:00 (17)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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