Rule

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Sid
24652

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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. 

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Detailed Information:
The Web Proxy Auto-Discovery (WPAD) functionality in Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, and 4.5 does not validate configuration data that is returned during acquisition of proxy settings, which allows remote attackers to execute arbitrary JavaScript code by providing crafted data during execution of (1) an XAML browser application (aka XBAP) or (2) a .NET Framework application, aka "Web Proxy Auto-Discovery Vulnerability."

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Affected Systems:
microsoft .net framework 2.0
microsoft .net framework 3.5
microsoft .net framework 3.5.1
microsoft .net framework 4.0
microsoft .net framework 4.5

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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-2012-4776:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-4776
  
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