Microsoft .NET Framework CAS verification code execution

dotnet-cas-code-execution (48293) The risk level is classified as HighHigh Risk

Description:

The Microsoft .NET Framework could allow a remote attacker to execute arbitrary code on the system, caused by a vulnerability in the way the CAS struct type verifies Microsoft .NET verifiable code. By persuading a victim to visit a specially-crafted Web site or execute a malicious .NET application locally, a remote attacker could exploit this vulnerability to overwrite memory and execute arbitrary code on the system with the privileges of the victim.

*CVSS:

Base Score: 9.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Complete
  Integrity Impact: Complete
  Availability Impact: Complete
 
Temporal Score: 6.9
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS09-061. See References.

References:

  • Microsoft Security Bulletin MS09-061: Vulnerabilities in the Microsoft .NET Common Language Runtime Could Allow Remote Code Execution (974378).
  • BID-36611: Microsoft .NET Framework Pointer Verification Remote Code Execution Vulnerability
  • CVE-2009-0090: Microsoft .NET Framework 1.0 SP3, 1.1 SP1, and 2.0 SP1 does not properly validate .NET verifiable code, which allows remote attackers to obtain unintended access to stack memory, and execute arbitrary code, via (1) a crafted XAML browser application (XBAP), (2) a crafted ASP.NET application, or (3) a crafted .NET Framework application, aka Microsoft .NET Framework Pointer Verification Vulnerability.
  • SA37006: Microsoft .NET Framework Multiple Vulnerabilities

Platforms Affected:

  • Microsoft .NET Framework 1.0 SP3
  • Microsoft .NET Framework 1.1 SP1
  • Microsoft .NET Framework 2.0
  • Microsoft .NET Framework 2.0 SP1
  • Microsoft Windows 2000 SP4
  • Microsoft Windows 7.0 x32
  • Microsoft Windows 7.0 x64
  • Microsoft Windows Server 2008 32-bit
  • Microsoft Windows Server 2008 SP2 x32
  • Microsoft Windows Vista SP1
  • Microsoft Windows Vista SP1 x64
  • Microsoft Windows Server 2003 SP2 Itanium
  • Microsoft Windows Server 2003 SP2 x64
  • Microsoft Windows Server 2003 SP2
  • Microsoft Windows Server 2008 SP2 Itanium
  • Microsoft Windows Server 2008 Itanium
  • Microsoft Windows Server 2008 R2 Itanium
  • Microsoft Windows Server 2008 R2 x64
  • Microsoft Windows Server 2008 SP2 x64
  • Microsoft Windows Server 2008 x64
  • Microsoft Windows Vista x64
  • Microsoft Windows Vista SP2 x64
  • Microsoft Windows Vista SP2
  • Microsoft Windows Vista
  • Microsoft Windows XP 2005 SP2 Tablet
  • Microsoft Windows XP 2005 SP3 Media Center
  • Microsoft Windows XP 2005 SP2 Media Center
  • Microsoft Windows XP 2005 SP3 Tablet
  • Microsoft Windows XP SP2
  • Microsoft Windows XP SP2 x64 Professional
  • Microsoft Windows XP SP3

Reported:

Oct 13, 2009

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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