File: 1776.txt

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Rule:  

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Sid: 1776

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Summary: 
This event is generated when an attempt is made to use the MySQL 'show' command to garner a list of databases.

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Impact: 
Intelligence gathering. This may be the prelude to an attack against one the databases or the MySQL daemon.

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Detailed Information:
This event is generated when the MySQL command 'show' is used to garner a list of MySQL databases being served by the MySQL daemon.
 
This connection can either be a legitimate telnet connection or the result of spawning a remote shell as a consequence of a successful network exploit. 

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Attack Scenarios: 
A MySQL implementation may inappropriately respond to connections from any host external to the protected network. The atttacker may be able to query the daemon to gain a list of databases available, then continue to garner information from the databases.

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Ease of Attack: 
Simple.

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False Positives: 
This event may be generated by a legitimate user making a query to a MySQL daemon from an external source.

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False Negatives:
None Known

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Corrective Action: 
Ensure that this event was not generated by a legitimate session then investigate the server for signs of compromise

Look for other events generated by the same IP addresses.

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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:

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