Objavljena je revizija sigurnosne preporuke s oznakom MS11-063, a vezana uz CSRSS (eng. Client/Server Run-time Subsystem) komponentu na operacijskim sustavima Microsoft Windows. Ranjivost je potencijalni napadač mogao iskoristiti za povećanje ovlasti na ranjivom sustavu.
Paket:
Microsoft Windows 7, Microsoft Windows Server 2003, Microsoft Windows Server 2008, Microsoft Windows Vista, Microsoft Windows XP
Operacijski sustavi:
Microsoft Windows XP, Microsoft Windows Server 2003, Microsoft Windows Vista, Microsoft Windows Server 2008, Microsoft Windows 7
Kritičnost:
5.3
Problem:
nepravilno rukovanje ovlastima, pogreška u programskoj komponenti
Iskorištavanje:
lokalno
Posljedica:
dobivanje većih privilegija
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2011-1967
Izvorni ID preporuke:
MS11-063
Izvor:
Microsoft
Problem:
Ranjivost se nalazila u komponenti Winsrv.dll, a posljedica je neodgovarajućeg upravljanja ovlastima kada proces nižih privilegija šalje poruke o događajima procesu viših privilegija. Revizija je objavljena kako bi se ispravila poveznica na opis ranjivosti iz originalnog upozorenja.
Posljedica:
Lokalni napadač navedeni propust može iskoristiti za dobivanje većih ovlasti na ranjivom sustavu.
Rješenje:
Ukoliko to još nisu napravili, svi se korisnici upućuju na primjenu nadogradnje.
Microsoft Security Bulletin MS11-063 - Important
Vulnerability in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege (2567680)
Published: August 09, 2011 | Updated: August 17, 2011
Version: 1.1
General Information
Executive Summary
This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker logs on to an affected system and runs a specially crafted application designed to send a device event message to a higher-integrity process. An attacker must have valid logon credentials and be able to log on locally to exploit this vulnerability.
This security update is rated Important for all supported versions of Microsoft Windows. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerability by modifying the way that the Client/Server Run-time Subsystem (CSRSS) evaluates inter-process device event message permissions. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.
Recommendation. The majority of customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates and install this update manually. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.
For administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update at the earliest opportunity using update management software, or by checking for updates using the Microsoft Update service.
See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.
Known Issues. None
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Affected and Non-Affected Software
The following software have been tested to determine which versions or editions are affected. Other versions or editions are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, visit Microsoft Support Lifecycle.
Affected Software
Operating System Maximum Security Impact Aggregate Severity Rating Bulletins Replaced by this Update
Windows XP Service Pack 3
Elevation of Privilege
Important
MS10-069
Windows XP Professional x64 Edition Service Pack 2
Elevation of Privilege
Important
MS10-069
Windows Server 2003 Service Pack 2
Elevation of Privilege
Important
MS10-069
Windows Server 2003 x64 Edition Service Pack 2
Elevation of Privilege
Important
MS10-069
Windows Server 2003 with SP2 for Itanium-based Systems
Elevation of Privilege
Important
MS10-069
Windows Vista Service Pack 2
Elevation of Privilege
Important
None
Windows Vista x64 Edition Service Pack 2
Elevation of Privilege
Important
None
Windows Server 2008 for 32-bit Systems Service Pack 2*
Elevation of Privilege
Important
None
Windows Server 2008 for x64-based Systems Service Pack 2*
Elevation of Privilege
Important
None
Windows Server 2008 for Itanium-based Systems Service Pack 2
Elevation of Privilege
Important
None
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
Elevation of Privilege
Important
MS11-056
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1
Elevation of Privilege
Important
MS11-056
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1*
Elevation of Privilege
Important
MS11-056
Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Elevation of Privilege
Important
MS11-056
*Server Core installation affected. This update applies, with the same severity rating, to supported editions of Windows Server 2008 or Windows Server 2008 R2 as indicated, whether or not installed using the Server Core installation option. For more information on this installation option, see the TechNet articles, Managing a Server Core Installation and Servicing a Server Core Installation. Note that the Server Core installation option does not apply to certain editions of Windows Server 2008 and Windows Server 2008 R2; see Compare Server Core Installation Options.
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Frequently Asked Questions (FAQ) Related to This Security Update
Vulnerability Information
Severity Ratings and Vulnerability Identifiers
CSRSS Vulnerability - CVE-2011-1967
Update Information
Detection and Deployment Tools and Guidance
Security Update Deployment
Other Information
Acknowledgments
Microsoft thanks the following for working with us to help protect customers:
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