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Category:   OS (Microsoft)  >   Windows DLL (Any) Vendors:   Microsoft
Microsoft Windows Privilege Separation and Access Control Bugs Let Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1022044
SecurityTracker URL:  http://securitytracker.com/id/1022044
CVE Reference:   CVE-2009-0078, CVE-2009-0079, CVE-2009-0080   (Links to External Site)
Date:  Apr 14 2009
Impact:   Execution of arbitrary code via local system, Root access via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2000 SP4, 2003 SP2, XP SP3, Vista SP1, 2008; and prior service packs
Description:   Several vulnerabilities were reported in Microsoft Windows. A local user can obtain elevated privileges on the target system.

The Windows Management Instrumentation (WMI) provider does not properly isolate processes that run under the NetworkService or LocalService accounts [CVE-2009-0078]. A local user with NetworkService or LocalService account privileges can probe the WMI provider host processes to identify SYSTEM tokens and then exploit the SYSTEM token to execute arbitrary code with SYSTEM privileges.

The RPCSS service does not properly isolate processes that run under the NetworkService or LocalService accounts [CVE-009-0079]. A local user with SeImpersonatePrivilege privileges may be able to obtain elevated privileges.

Windows applies incorrect access control lists (ACLs) on threads in the current ThreadPool [CVE-2009-0080]. A local user may be able to obtain elevated privileges.

Cesar Cerrudo of Argeniss reported these vulnerabilities.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   The vendor has issued a fix.

A patch matrix is available in the vendor's advisory.

A restart is required.

The vendor's advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms09-012.mspx

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms09-012.mspx (Links to External Site)
Cause:   Access control error

Message History:   None.


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