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AUSCERT External Security Bulletin Redistribution
ESB-2009.0543 -- [Win]
Windows Kernel: Increased Privileges
11 June 2009
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AusCERT Security Bulletin Summary
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Product: Windows Kernel
Publisher: Microsoft
Operating System: Windows
Impact: Increased Privileges
Execute Arbitrary Code/Commands
Access: Existing Account
CVE Names: CVE-2009-1126 CVE-2009-1125 CVE-2009-1124
CVE-2009-1123
Original Bulletin:
http://www.microsoft.com/technet/security/Bulletin/MS09-025.mspx
Comment: Two of these vulnerabilities have been made public.
Revision History: June 11 2009: Document number changed from
ESB-2009.0700 to ESB-2009.0543
June 10 2009: Initial Release
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Microsoft Security Bulletin MS09-025 - Important
Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege
(968537)
Published: June 9, 2009
Version: 1.0
General Information
Executive Summary
This security update resolves two publicly disclosed and two privately
reported vulnerabilities in the Windows kernel that could allow
elevation of privilege. An attacker who successfully exploited any of
these vulnerabilities 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. 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 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 security update addresses these vulnerabilities by correcting the
methods used for validating a change in specific kernel objects, for
validating the input passed from user mode to the kernel, and for
validating the argument passed to the system call. The security update
also addresses a vulnerability by ensuring that the Windows kernel
cleans up pointers under error conditions.
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
Windows Kernel Desktop Vulnerability- CVE-2009-1123
An elevation of privilege vulnerability exists in the way that the Windows
kernel does not properly validate changes in certain kernel objects. 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.
Windows Kernel Pointer Validation Vulnerability- CVE-2009-1124
An elevation of privilege vulnerability exists in the Windows kernel due
to the insufficient validation of certain pointers passed from user mode.
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.
Windows Driver Class Registration Vulnerability - CVE-2009-1125
An elevation of privilege vulnerability exists because the Windows kernel
does not properly validate an argument passed to a Windows kernel system
call. 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.
Windows Desktop Parameter Edit Vulnerability - CVE-2009-1126
An elevation of privilege vulnerability exists when the Windows kernel
improperly validates input passed from user mode to the kernel when
editing a specific desktop parameter. The vulnerability could allow an
attacker to run code with elevated privileges. 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.
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