Rule

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Sid
3-13667

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Summary:
This event is generated when an attempt is made to exploit a known vulnerability in various implementations of DNS.

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Impact:
Unknown.

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Detailed Information:
The DNS client in Microsoft Windows 2000 SP4, XP SP2, Server 2003 SP1 and SP2, and Vista uses predictable DNS transaction IDs, which allows remote attackers to spoof DNS responses.

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Affected Systems:
Multiple DNS implementations from multiple vendors

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Attack Scenarios:


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Ease of Attack:
Simple.

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False Positives:
A recursive DNS server that uses a static source port and also does not cache a response may cause this rule to generate events when client machines make requests for a DNS record via the server.

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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-2008-0087:
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2008-0087

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