Rule:

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Sid:

1831

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Summary:
This event is generated when an attempt is made to exploit a Denial of Service (DoS) condition in the Jigsaw web server from W3C.

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Impact:
Denial of Service.

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Detailed Information:
Jigsaw is a Java-based web server developed by W3C. Jigsaw version 2.2.1 is vulnerable to a DoS attack caused by improper handling of requests for DOS device names.

Jigsaw web server versions prior to 2.2.1 (Build 20020711)  contain a Denial of Service vulnerability in a handler that processes HTTP requests for DOS device files. This may result in process threads hanging and a consumption of all available resources.


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Affected Systems:
	Jigsaw 2.2.1

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Attack Scenarios:
It is possible to crash the Jigsaw web server by requesting /servlet/con about 30 times.

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Ease of Attack:
Simple.

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False Positives:
Certain HTTP requests may generate an event.

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False Negatives:
None known.

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Corrective Action:
Upgrade to the latest version of Jigsaw (2.2.1 Build 20020711 or later)

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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:

Bugtraq:
http://www.securityfocus.com/bid/5258/

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