Rule

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Sid
3-17041

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

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Impact:
Denial of Service. Information disclosure. Loss of integrity. 

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Detailed Information:
Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius OTP is enabled, uses the HTTP-Basic authentication method, which allows remote attackers to gain the privileges of an arbitrary account, and access published web pages, via vectors involving attempted access to a network resource behind the ISA Server, aka "Radius OTP Bypass Vulnerability."

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Affected Systems:
Microsoft ISA server 2006
Microsoft ISA server 2006

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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-2009-1135:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-1135
  
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