8481.txt

This is the snapshot of Snot Latest Rules

Rule:

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Sid:
8481

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Summary:
This event is generated when an attempt is made to exploit a buffer overflow vulnerability associated with Microsoft Internet Information Server FTP NLST command. 

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Impact:
Serious. Denial of Service is possible.

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Detailed Information:
Microsoft IIS offers FTP servers for Windows hosts. A vulnerability exists with the NLST command that can cause a DoS and deny service to legitmate users. The DoS can be caused by supplying a filename with wildcard sequences to the NLST command.

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Affected Systems:
Microsoft IIS FTP service

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Attack Scenarios:
An attacker can supply a file argument using wildcards with the NLST command, causing a DoS.

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Ease of Attack:
Simple.  

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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.

Use an alternate FTP service.

Deny the use of FTP services to sources external to the protected network.

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Contributors:
Sourcefire Vulnerability Research Team
Brian Caswell <[e-mail]> 
Nigel Houghton <[e-mail]>

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Additional References:

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