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>> Microsoft Windows .NET Framework Code Execution Vulnerabilities (MS09-061)

Title : Microsoft Windows .NET Framework Code Execution Vulnerabilities (MS09-061)
VUPEN ID : VUPEN/ADV-2009-2896
CVE ID : CVE-2009-0090 - CVE-2009-0091 - CVE-2009-2497
CWE ID : VUPEN VNS Only
CVSS V2 : VUPEN VNS Only
Rated as : Critical 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2009-10-13



Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format 

Multiple vulnerabilities have been identified in Microsoft .NET Framework and Microsoft Silverlight, which could be exploited by attackers to compromise a vulnerable system.

The first issue results from the manner in which Microsoft .NET verifiable code is verified, which could allow attackers to obtain a managed pointer to stack memory that is no longer used, leading to arbitrary code execution.

The second vulnerability results from the manner in which Microsoft .NET verifiable code is verified, which could allow attackers to bypass a type equality check and execute arbitrary code.

The third issue results from the manner in which the Microsoft .NET Common Language Runtime (CLR) handles interfaces, which could allow attackers to execute arbitrary code via a malicious application.

Affected Products

Microsoft Windows 2000 Service Pack 4
Microsoft Windows XP Service Pack 2
Microsoft Windows XP Service Pack 3
Microsoft Windows XP Professional x64 Edition Service Pack 2
Microsoft Windows Server 2003 Service Pack 2
Microsoft Windows Server 2003 x64 Edition Service Pack 2
Microsoft Windows Server 2003 SP2 (Itanium)
Microsoft Windows Vista
Microsoft Windows Vista Service Pack 1
Microsoft Windows Vista Service Pack 2
Microsoft Windows Vista x64 Edition
Microsoft Windows Vista x64 Edition Service Pack 1
Microsoft Windows Vista x64 Edition Service Pack 2
Microsoft Windows Server 2008
Microsoft Windows Server 2008 (32-bit)
Microsoft Windows Server 2008 (32-bit) Service Pack 2
Microsoft Windows Server 2008 (x64)
Microsoft Windows Server 2008 (x64) Service Pack 2
Microsoft Windows Server 2008 (Itanium)
Microsoft Windows Server 2008 (Itanium) Service Pack 2
Microsoft Windows 7 (32-bit)
Microsoft Windows 7 (x64)
Microsoft Windows Server 2008 R2
Microsoft Windows Server 2008 R2 (x64)
Microsoft Windows Server 2008 R2 (Itanium)

Microsoft .NET Framework 1.0 Service Pack 3
Microsoft .NET Framework 1.1 Service Pack 1
Microsoft .NET Framework 2.0 Service Pack 1
Microsoft .NET Framework 2.0 Service Pack 2
Microsoft .NET Framework 3.5
Microsoft .NET Framework 3.5 Service Pack 1

Microsoft Silverlight 2

Solution

Apply patches :
http://www.microsoft.com/technet/security/bulletin/MS09-061.mspx

References

http://www.vupen.com/english/advisories/2009/2896
http://www.microsoft.com/technet/security/bulletin/MS09-061.mspx

Credits

Vulnerabilities reported by Pavel Minaev and Jeroen Frijters (Sumatra).

ChangeLog

2009-10-13 : Initial release

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