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AUSCERT External Security Bulletin Redistribution
ESB-2011.0624
Vulnerability in .NET Framework and Microsoft Silverlight
Could Allow Remote Code Execution (2514842)
15 June 2011
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AusCERT Security Bulletin Summary
---------------------------------
Product: Microsoft Windows
Publisher: Microsoft
Operating System: Windows XP
Windows Server 2003
Windows Vista
Windows Server 2008
Windows 7
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2011-0664
Original Bulletin:
http://www.microsoft.com/technet/security/bulletin/MS11-039.mspx
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Microsoft Security Bulletin MS11-039 - Critical
Vulnerability in .NET Framework and Microsoft Silverlight Could Allow Remote
Code Execution (2514842)
Version: 1.0
General Information
Executive Summary
This security update resolves a privately reported vulnerability in Microsoft
.NET Framework and Microsoft Silverlight. The vulnerability could allow remote
code execution on a client system if a user views a specially crafted Web page
using a Web browser that can run XAML Browser Applications (XBAPs) or
Silverlight applications. Users whose accounts are configured to have fewer
user rights on the system could be less impacted than users who operate with
administrative user rights. The vulnerability could also allow remote code
execution on a server system running IIS, if that server allows processing
ASP.NET pages and an attacker succeeds in uploading a specially crafted
ASP.NET page to that server and then executes the page, as could be the case
in a Web hosting scenario. This vulnerability could also be used by Windows
.NET applications to bypass Code Access Security (CAS) restrictions.
Affected Software
Windows XP Service Pack 3
Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003
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
Windows Vista Service Pack 2
Windows Vista x64 Edition Service Pack 1
Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems
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
.NET Framework Array Offset Vulnerability - CVE-2011-0664
A remote code execution vulnerability exists in the Microsoft .NET Framework
that can allow a specially crafted Microsoft .NET application to access memory
in an unsafe manner. An attacker who successfully exploited this vulnerability
could run arbitrary code in the security context of the logged-on user. An
attacker could then install programs; view, change, or delete data; or create
new accounts with full user rights. Users whose accounts are configured to have
fewer user rights on the system could be less impacted than users who operate
with administrative user rights.
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