Rule:

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Sid: 


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Summary: 
This event is generated when an attempt is made to exploit a known vulnerability in Ethereal. In particular, this event indicates that the exploit was attempted via the "DISTCC dissector" function.

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Impact: 
Serious. Denial of Service (DoS).

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Detailed Information:
Ethereal is a multi-platform network protocol analyser capable of displaying network data to the user in a graphical user interface.

An error in the processing of the payload length in a DISTCC packet may prevent an attacker with the opportunity to overflow a fixed length buffer and execute code of their choosing in the context of the user running Ethereal. This is normally the super-user or administrator when Ethereal is used to sniff data directly from a network interface.

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Affected Systems:
	Ethereal 0.9.13 through 0.10.10

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Attack Scenarios: 
An attacker need to craft a DISTCC packet with a packet payload length of -1 to cause the overflow to manifest itself.

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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: 
Apply the appropriate vendor supplied patch

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

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Contributors: 
Sourcefire Research Team
Alex Kirk <akirk@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References:

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