MS11-056 MS11-056 - Important : Vulnerabilities in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege (2507938) - Version: 1.1
Version2011-07-21
Severity Rating: Important
Revision Note: V1.1 (July 21, 2011): Added a link to Microsoft Knowledge Base Article 2507938 under Known Issues in the Executive Summary.
Summary: This security update resolves five privately reported vulnerabilities in the Microsoft Windows Client/Server Run-time Subsystem (CSRSS). The vulnerabilities could allow elevation of privilege if an attacker logs on to a user's system and runs a specially crafted application. An attacker must have valid logon credentials and be able to log on locally to exploit the vulnerabilities.
Bulletin details at Microsoft.com
Bulletin details at Microsoft.com
Related CVE Entries
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 SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly restrict the number of console objects for a process, which allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that triggers an incorrect memory assignment for a user transaction, aka "CSRSS Local EOP AllocConsole Vulnerability."
Max CVSS
7.2
EPSS Score
0.04%
Published
2011-07-13
Updated
2023-12-07
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 SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly initialize memory and consequently uses a NULL pointer in an unspecified function call, which allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that triggers an incorrect memory assignment for a user transaction, aka "CSRSS Local EOP SrvSetConsoleLocalEUDC Vulnerability."
Max CVSS
7.2
EPSS Score
0.04%
Published
2011-07-13
Updated
2023-12-07
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 SP1 and SP2, and Windows Server 2008 Gold and SP2 does not ensure that an unspecified array index has a non-negative value before performing read and write operations, which allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that triggers an incorrect memory assignment for a user transaction, aka "CSRSS Local EOP SrvSetConsoleNumberOfCommand Vulnerability."
Max CVSS
7.2
EPSS Score
0.04%
Published
2011-07-13
Updated
2023-12-07
Integer overflow 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 SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that triggers an incorrect memory assignment for a user transaction, aka "CSRSS Local EOP SrvWriteConsoleOutput Vulnerability."
Max CVSS
7.2
EPSS Score
0.04%
Published
2011-07-13
Updated
2023-12-07
Integer overflow in the Client/Server Run-time Subsystem (aka CSRSS) in the Win32 subsystem in Microsoft Windows XP SP2 and SP3, and Windows Server 2003 SP2, allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that triggers an incorrect memory assignment for a user transaction, aka "CSRSS Local EOP SrvWriteConsoleOutputString Vulnerability."
Max CVSS
7.2
EPSS Score
0.04%
Published
2011-07-13
Updated
2019-02-26