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AUSCERT External Security Bulletin Redistribution
ESB-2009.0542 -- [Win]
Windows Remote Procedure Call: Increased Privileges
11 June 2009
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AusCERT Security Bulletin Summary
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Product: Remote Procedure Call (RPC)
Publisher: Microsoft
Operating System: Windows
Impact: Increased Privileges
Execute Arbitrary Code/Commands
Access: Remote/Unauthenticated
CVE Names: CVE-2009-0568
Original Bulletin:
http://www.microsoft.com/technet/security/Bulletin/MS09-026.mspx
Revision History: June 11 2009: Document number changed from
ESB-2009.0699 to ESB-2009.0542
June 10 2009: Initial Release
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Microsoft Security Bulletin MS09-026 - Important
Vulnerability in RPC Could Allow Elevation of Privilege (970238)
Published: June 9, 2009
Version: 1.0
General Information
Executive Summary
This security update resolves a publicly disclosed vulnerability in the
Windows remote procedure call (RPC) facility where the RPC Marshalling
Engine does not update its internal state appropriately. The
vulnerability could allow an attacker to execute arbitrary code and take
complete control of an affected system. Supported editions of Microsoft
Windows are not delivered with any RPC servers or clients that are
subject to exploitation of this vulnerability. In a default
configuration, users could not be attacked by exploitation of this
vulnerability. However, the vulnerability is present in the Microsoft
Windows RPC runtime and could affect third-party RPC applications.
This security update is rated Important for all supported editions of
Microsoft Windows 2000, Windows XP, Windows Server 2003, Windows Vista,
and Windows Server 2008. For more information, see the subsection,
Affected and Non-Affected Software, in this section.
The update addresses the vulnerability by correcting the way that the
RPC Marshalling Engine updates its internal state.
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
Windows Vista,
Windows Vista Service Pack 1, and
Windows Vista Service Pack 2
Windows Vista x64 Edition,
Windows Vista x64 Edition Service Pack 1, and
Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems and
Windows Server 2008 for 32-bit Systems Service Pack 2
(Windows Server 2008 Server Core installation affected)
Windows Server 2008 for x64-based Systems and
Windows Server 2008 for x64-based Systems Service Pack 2
(Windows Server 2008 Server Core installation affected)
Windows Server 2008 for Itanium-based Systems and
Windows Server 2008 for Itanium-based Systems Service Pack 2
Vulnerability Information
RPC Marshalling Engine Vulnerability - CVE-2009-0568
An elevation of privilege vulnerability exists in the Windows remote
procedure call (RPC) facility where the RPM Marshalling Engine does not
update its internal state appropriately. The failure to update internal
state could lead to a pointer being read from an incorrect location. An
attacker who successfully exploited this vulnerability could execute
arbitrary code and take complete control of an affected system. An
attacker could then install programs; view, change, or delete data; or
create new accounts with full user rights.
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The University of Queensland
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