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AUSCERT External Security Bulletin Redistribution
ESB-2011.0823
Vulnerability in Windows Kernel Could Allow Denial of Service
10 August 2011
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AusCERT Security Bulletin Summary
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Product: Microsoft Windows
Publisher: Microsoft
Operating System: Windows Vista
Windows 7
Windows Server 2008
Windows Server 2008 R2
Impact/Access: Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2011-1971
Original Bulletin:
http://www.microsoft.com/technet/security/bulletin/MS11-068.mspx
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Microsoft Security Bulletin MS11-068 - Moderate
Vulnerability in Windows Kernel Could Allow Denial of Service (2556532)
Published: August 09, 2011
Version: 1.0
General Information
Executive Summary
This security update resolves a privately reported vulnerability in
Microsoft Windows. The vulnerability could allow denial of service if a
user visits a network share (or visits a Web site that points to a
network share) containing a specially crafted file. In all cases,
however, an attacker would have no way to force a user to visit such a
network share or Web site. Instead, an attacker would have to convince
a user to do so, typically by getting the user to click a link in an
e-mail message or Instant Messenger message.
This security update is rated Moderate for all supported editions of
Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008
R2. For more information, see the subsection, Affected and Non-Affected
Software, in this section.
Affected Software
Windows Vista Service Pack 2
Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems Service Pack 2
Windows 7 for 32-bit Systems
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Vulnerability Information
Windows Kernel Metadata Parsing DOS Vulnerability - CVE-2011-1971
A denial of service vulnerability exists in Windows due to the way the
kernel parses file meta-data when browsing to a folder. An attacker who
successfully exploited this vulnerability could cause the affected
system to crash.
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