10 February 2010
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2010.0133 Vulnerability in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege 10 February 2010 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft Windows Client/Server Run-time Subsystem Publisher: Microsoft Operating System: Windows Server 2003 Windows 2000 Windows XP Impact/Access: Administrator Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2010-0023 Original Bulletin: http://www.microsoft.com/technet/security/Bulletin/MS10-011.mspx - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS10-011 - Important Vulnerability in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege (978037) Published: February 09, 2010 Version: 1.0 General Information Executive Summary This security update resolves a privately reported vulnerability in Microsoft Windows Client/Server Run-time Subsystem (CSRSS) in Microsoft Windows 2000, Windows XP, and Windows Server 2003. Other versions of Windows are not affected. The vulnerability could allow elevation of privilege if an attacker logs on to the system and starts a specially crafted application designed to continue running after the attacker logs out. An attacker must have valid logon credentials and be able to log on locally to exploit this vulnerability. The vulnerability could not be exploited by anonymous users. This security update is rated Important for all supported editions of Microsoft Windows 2000, Windows XP, and Windows Server 2003. The security update addresses the vulnerability by correcting the manner in which users' processes are terminated upon logout. 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 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. Known Issues. None Affected Software Microsoft Windows 2000 Service Pack 4 Windows XP Service Pack 2 and Windows XP Service Pack 3 Windows XP Professional x64 Edition Service Pack 2 Windows Server 2003 Service Pack 2 Windows Server 2003 x64 Edition Service Pack 2 Windows Server 2003 with SP2 for Itanium-based Systems Vulnerability Information CSRSS Local Privilege Elevation Vulnerability - CVE-2010-0023 An elevation of privilege vulnerability exists because the Windows Client/Server Run-time Subsystem (CSRSS) does not properly terminate user processes when a user logs out. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to email@example.com and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iD8DBQFLchdH/iFOrG6YcBERAg9uAJ0UGlNpE9LHg8uPejoslemMgNjhdgCbBuoC 1yMgbZGxW5pUivoM/kTleZs= =pBas -----END PGP SIGNATURE-----