File: 2335.txt

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Rule:

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Sid: 
2335

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Summary:
This event is generated when an attempt is made to exploit a known
vulnerability in AppleShare IP FTP Server.

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Impact:
Denial of Service (DoS)

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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.

It is possible for a user to supply data to an FTP command, in this case
RMD, and cause the service to become unavailble to other users.

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Affected Systems:
	Apple AppleShare IP 5.0, 5.0.1, 5.0.2, 5.0.3
	Apple AppleShare IP 6.1, 6.2, 6.3, 6.3.1

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Attack Scenarios:
An attacker needs to login to the service and use the RMD command in a
specific manner to cause the DoS.

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Ease of Attack:
Simple. No exploit software required.

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False Positives:
None Known

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False Negatives:
None Known

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Corrective Action:
Apply the appropriate vendor supplied patches.

Upgrade to the latest non-affected version of the software.

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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