File: 183.txt

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Rule:

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Sid:
183

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Summary:
Q is a Trojan Horse offering the attacker remote access to the victim 
host. This event is generated when raw ICMP packets are sent to the 
victim server.

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Impact:
Possible theft of data and control of the targeted machine leading to a
compromise of all resources the machine is connected to.

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Detailed Information:
This Trojan affects UNIX operating systems.

The Trojan is controlled by sending raw packets (TCP/UDP/ICMP) to the 
victim host containing commands to be run as root.

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Attack Scenarios:
This Trojan may be delivered to the target in a number of ways. The 
attacker can then choose to send raw data to the victim via TCP/UDP/ICMP
from the broadcast address of a class C network.

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Ease of Attack:
This is Trojan activity, the target machine may already be compromised.

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False Positives:
None Known

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False Negatives:
None Known

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Corrective Action:
Traffic originating from a broadcast address should not be allowed from 
external sources or from internal sources to external destinations. 
Judicious use of firewall rules is necessary.

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Contributors:
Original rule written by Max Vision <vision@whitehats.com>
Sourcefire Research Team
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References:

Whitehats arachNIDS
http://www.whitehats.com/info/IDS202

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