Rule

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Sid
3-16183

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Summary:
This event is generated when an attempt is made to exploit a known vulnerability in .Net Framework.

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Impact:
Denial of Service. Information disclosure. Loss of integrity. Complete admin access.

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Detailed Information:
Microsoft .NET Framework 2.0, 2.0 SP1, and 3.5 does not properly enforce a certain type-equality constraint in .NET verifiable code, which allows remote attackers to 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 Type Verification Vulnerability."

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Affected Systems:
Microsoft .Net Framework 1.0
Microsoft .Net Framework 1.1
Microsoft .Net Framework 2.0
Microsoft .Net Framework 2.0
Microsoft .Net Framework 3.5

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Attack Scenarios:


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Ease of Attack:
Simple. Exploits exist.

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:
Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

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Contributors:
Sourcefire Vulnerability Research Team
This document was generated from data supplied by the National Vulnerability Database. A product of the National Institute of Standards and Technology.
For more information see http://nvd.nist.gov/

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Additional References:

NIST CVE-2009-0091:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-0091
  
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