Rule:

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Sid:
1814

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Summary:
This event is generated when an attempt is made to exploit a flaw on a 
Cisco VoIP telephone.

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Impact:
Denial of Service.

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Detailed Information:
Certain versions of Cisco's VoIP phones are vulnerable to an attack that
can cause them to reboot when they recieve an http request such as 
http://ciscophoneip/StreamingStatistics?<value> where <value> is an 
integer value of arbitrary high value, typically a number greater than 
32768.

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Affected Systems:
	Cisco VoIP Phones 7910, 7940, and 7960
	  (software version 3.0 to 3.2)

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Attack Scenarios:
A remote user can send the exploit url to the phone, causing the phone 
to reboot and disallowingthe user to place or recieve calls for up to 30
seconds.

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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 patches.

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Contributors:
Sourcefire Research Team
Brian Caswell <bmc@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com> 
Snort documentation contributed by Josh Sakofsky

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Additional References:

Bugtraq:
http://www.securityfocus.com/bid/4794

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