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AUSCERT External Security Bulletin Redistribution
ESB-2011.0136
Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege
9 February 2011
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AusCERT Security Bulletin Summary
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Product: Windows Kernel
Publisher: Microsoft
Operating System: Windows XP
Windows Vista
Windows 7
Windows Server 2003
Windows Server 2008
Impact/Access: Administrator Compromise -- Existing Account
Increased Privileges -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2011-0045 CVE-2010-4398
Original Bulletin:
http://www.microsoft.com/technet/security/Bulletin/MS11-011.mspx
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Microsoft Security Bulletin MS11-011 - Important
Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege (2393802)
Published: February 08, 2011
Version: 1.0
General Information
Executive Summary
This security update resolves one publicly disclosed vulnerability and one
privately reported vulnerability in Microsoft Windows. The vulnerabilities
could allow elevation of privilege if an attacker logged on locally and ran a
specially crafted application. An attacker must have valid logon credentials and
be able to log on locally to exploit these vulnerabilities. The vulnerabilities
could not be exploited remotely or by anonymous users.
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 vulnerabilities by ensuring that the Windows
kernel properly validates user-supplied data before allocating memory.
Affected Software
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 Service Pack 1 and Windows Vista Service Pack 2
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 for x64-based Systems and Windows Server 2008 for
x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for
Itanium-based Systems Service Pack 2
Windows 7 for 32-bit Systems
Windows 7 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 for Itanium-based Systems
Vulnerability Information
Driver Improper Interaction with Windows Kernel Vulnerability - CVE-2010-4398
An elevation of privilege vulnerability exists due to the improper interaction
of drivers with the Windows kernel. An attacker who successfully exploited this
vulnerability could run arbitrary code in kernel mode 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 administrative rights.
Windows Kernel Integer Truncation Vulnerability - CVE-2011-0045
An elevation of privilege vulnerability exists due to the way that the Windows
kernel allocates memory when reading user-supplied data. An attacker who
successfully exploited this vulnerability could run arbitrary code in kernel
mode 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
administrative rights.
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