Microsoft Windows 7/Server 2003/Server 2008/Vista/XP CSRSS access control

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CTI Interest Score
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6.8$0-$5k0.00

A vulnerability was found in Microsoft Windows 7/Server 2003/Server 2008/Vista/XP (Operating System). It has been classified as critical. This affects some unknown processing of the component CSRSS. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Csrsrv.dll in the Client/Server Run-time Subsystem (aka CSRSS) in the Win32 subsystem 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 check permissions for sending inter-process device-event messages from low-integrity processes to high-integrity processes, which allows local users to gain privileges via a crafted application, aka "CSRSS Local Privilege Elevation Vulnerability."

The weakness was shared 12/13/2011 by Alex Ionescu with Winsider Seminars & Solutions Inc. as MS11-097 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. The vendor cooperated in the coordination of the public release. This vulnerability is uniquely identified as CVE-2011-3408 since 09/09/2011. The exploitability is told to be easy. Attacking locally is a requirement. Required for exploitation is a authentication. 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 57283 (MS11-097: Vulnerability in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege (2620712)), 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 90760 (Microsoft Windows Client/Server Run-time Subsystem Elevation of Privilege Vulnerability (MS11-097)).

Applying the patch 2620712 is able to eliminate this problem. The bugfix is ready for download at support.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (57283). Further details are available at computerworld.com. The entries 4449, 4470, 4466 and 4469 are related to this item.

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  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

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

VulDB Base Score: 7.8
VulDB Temp Score: 6.8
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CVSSv2info

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Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Access: Private
Status: Unproven

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Nessus ID: 57283
Nessus Name: MS11-097: Vulnerability in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege (2620712)
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OpenVAS ID: 902643
OpenVAS Name: Windows Client/Server Run-time Subsystem Privilege Elevation Vulnerability (2620712)
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Patch: 2620712

Timelineinfo

09/09/2011 🔍
12/13/2011 +94 days 🔍
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12/13/2011 +0 days 🔍
12/14/2011 +0 days 🔍
01/21/2012 +38 days 🔍
03/20/2021 +3346 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS11-097
Researcher: Alex Ionescu
Organization: Winsider Seminars & Solutions Inc.
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2011-3408 (🔍)
OVAL: 🔍
IAVM: 🔍

Vulnerability Center: 34027 - [MS11-097] Microsoft Windows CSRSS Local Privileges Escalation Vulnerability, High
SecurityFocus: 50972 - Microsoft Windows CSRSS CVE-2011-3408 Local Privilege Escalation Vulnerability
Secunia: 47210 - Microsoft Windows CSRSS Device Event Message Privilege Escalation Vulnerability, Less Critical
OSVDB: 77662 - Microsoft Windows CSRSS Device Event Message Parsing Local Privilege Escalation

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

Created: 01/21/2012 01:00
Updated: 03/20/2021 08:50
Changes: 01/21/2012 01:00 (53), 06/08/2017 12:06 (29), 03/20/2021 08:40 (7), 03/20/2021 08:47 (2), 03/20/2021 08:50 (1)
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