Rule:

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Sid:

1605

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Summary:
This event is generated when an attempt is made to issue a Denial of Service to a host running iParty.

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Impact:
Denial of Service.

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Detailed Information:
iParty is an audio/text chat program for Windows.  The iParty server listens on a specified port 6004 for client requests. An attacker can connect to the chat server and send a large amount of '^?' characters (ASCII 255 or Hex FF), the server will simply shutdown and disconnect all the current users.  

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Affected Systems:
	iParty prior to 1.2

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Attack Scenarios:
cat /dev/kmem | telnet target 6004

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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.

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Contributors:
Sourcefire Research Team
Brian Caswell <bmc@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>
Snort documentation contributed by Nawapong Nakjang (tony@ksc.net, tonie@thai.com)

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Additional References:

http://www.securityspace.com/smysecure/catid.html?id=10111

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