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AUSCERT External Security Bulletin Redistribution
ESB-2008.0974 -- [Win]
MS08-063 - Important - Vulnerability in SMB Could Allow
Remote Code Execution
15 October 2008
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AusCERT Security Bulletin Summary
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Product: Microsoft Windows 2000 Service Pack 4
Windows XP Service Pack 2
Windows XP Service Pack 3
Windows XP Professional x64 Edition
Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003 Service Pack 1
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP1 for Itanium-based Systems
Windows Server 2003 with SP2 for Itanium-based Systems
Windows Vista and Windows Vista Service Pack 1
Windows Vista x64 Edition
Windows Vista x64 Edition Service Pack 1
Windows Server 2008 for 32-bit Systems
Windows Server 2008 for x64-based Systems
Windows Server 2008 for Itanium-based Systems
Publisher: Microsoft
Operating System: Windows
Impact: Execute Arbitrary Code/Commands
Access: Existing Account
CVE Names: CVE-2008-4038
Original Bulletin:
http://www.microsoft.com/technet/security/bulletin/ms08-063.mspx
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Microsoft Security Bulletin MS08-063 - Important
Vulnerability in SMB Could Allow Remote Code Execution (957095)
Published: October 14, 2008
Version: 1.0
General Information
Executive Summary
This security update resolves a privately reported vulnerability in
Microsoft Server Message Block (SMB) Protocol. The vulnerability could
allow remote code execution on a server that is sharing files or
folders. An attacker who successfully exploited this vulnerability
could install programs; view, change, or delete data; or create new
accounts with full user rights.
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 the vulnerability by modifying the way
that SMB handles file name length validation and file sharing.
Recommendation. Microsoft recommends that customers apply the update
at the earliest opportunity.
Affected Software
Microsoft Windows 2000 Service Pack 4
Windows XP Service Pack 2
Windows XP Service Pack 3
Windows XP Professional x64 Edition
Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003 Service Pack 1
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP1 for Itanium-based Systems
Windows Server 2003 with SP2 for Itanium-based Systems
Windows Vista and Windows Vista Service Pack 1
Windows Vista x64 Edition
Windows Vista x64 Edition Service Pack 1
Windows Server 2008 for 32-bit Systems
Windows Server 2008 for x64-based Systems
Windows Server 2008 for Itanium-based Systems
Vulnerability Information
SMB Buffer Underflow Vulnerability - CVE-2008-4038
A remote code execution vulnerability exists in the way that Microsoft
Server Message Block (SMB) Protocol handles specially crafted file
names. An attempt to exploit the vulnerability would require
authentication because the vulnerable function is only reachable when
the share type is a disk, and by default, all disk shares require
authentication. An attacker who successfully exploited this
vulnerability could install programs; view, change, or delete data; or
create new accounts with full user rights.
Workarounds for SMB Buffer Underflow Vulnerability - CVE-2008-4038
Microsoft has not identified any workarounds for this vulnerability.
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The University of Queensland
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