Rule:

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Sid:
1541

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Summary:
This event is generated when an attempt is made to ascertain which 
version of fingerd is running on a host. 

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Impact:
Information gathering.

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Detailed Information:
This event indicates that an attempt has been made to ascertain which 
version of the finger daemon is running on a host. This may be the 
prelude to an attack against that finger daemon.

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Affected Systems:
Any host running fingerd.

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Attack Scenarios:
An attacker can determine which version of fingerd is running then 
attempt to exploit fingerd if it is found to be vulnerable to attack.

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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:
Disallow access to fingerd from sources external to the protected 
network.

Disable the finger daemon.

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Contributors:
Sourcefire Research Team
Brian Caswell <bmc@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References:

GNU Finger Manual:
http://www.gnu.org/software/finger/manual/

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