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AUSCERT External Security Bulletin Redistribution
ESB-2010.0703
Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege
11 August 2010
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AusCERT Security Bulletin Summary
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Product: Microsoft Windows
Publisher: Microsoft
Operating System: Windows XP
Windows Vista
Windows Server 2008
Windows 7
Impact/Access: Increased Privileges -- Existing Account
Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2010-1890 CVE-2010-1889 CVE-2010-1888
Original Bulletin:
http://www.microsoft.com/technet/security/Bulletin/MS10-047.mspx
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Microsoft Security Bulletin MS10-047 - Important
Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege (981852)
Version: 1.0
General Information
Executive Summary
This security update resolves several privately reported vulnerabilities in
Microsoft Windows. The most severe of these 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 Windows XP, Windows Vista, and
Windows Server 2008; and Moderate for Windows 7 and Windows Server 2008 R2.
For more information, see the subsection, Affected and Non-Affected Software,
in this section. The security update addresses the vulnerabilities by
correcting Windows kernel object initialization and validation of access
control lists and by introducing additional runtime validation to the thread
creation mechanism. For more information about the vulnerabilities, see the
Frequently Asked Questions (FAQ) subsection for the specific vulnerability
entry under the next section, Vulnerability Information.
Affected Software
Windows XP Service Pack 3
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 Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition
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
Windows Kernel Data Initialization Vulnerability - CVE-2010-1888
An elevation of privilege vulnerability exists in the Windows Kernel due to
the way the kernel deals with specific thread creation attempts. 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 Double Free Vulnerability - CVE-2010-1889
An elevation of privilege vulnerability exists in the Windows Kernel due to
the way the kernel initializes objects while handling certain errors. 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 Improper Validation Vulnerability - CVE-2010-1890
A denial of service vulnerability exists in the way that the Windows kernel
validates access control lists on kernel objects. An attacker could exploit
the vulnerability by running a specially crafted application causing the
system to become unresponsive and automatically restart.
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