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Rule:
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Sid:
1624
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Summary:
This event is generated when activity relating to spurious ftp traffic is detected on the network.
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Impact:
Varies from information gathering to a serious compromise of an ftp server.
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Detailed Information:
FTP is used to transfer files between hosts. This event is indicative of spurious activity in FTP traffic between hosts.
The event may be the result of a transfer of a known protected file or it could be an attempt to compromise the FTP server by overflowing a buffer in the FTP daemon or service.
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Attack Scenarios:
A user may transfer sensitive company information to an external party using FTP.
An attacker might utilize a vulnerability in an FTP daemon to gain access to a host, then upload a Trojan Horse program to gain control of that host.
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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 FTP resources from hosts external to the protected network.
Use secure shell (ssh) to transfer files as a replacement for FTP.
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Contributors:
Sourcefire Research Team
Brian Caswell <brian.caswell@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>
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Additional References:
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