Rule:

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Sid:
3557

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Summary:
This rule should not generate an event.

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Impact:
Execution of arbitrary code leading to full administrator access of the 
machine. Denial of Service (DoS).

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Detailed Information:
When an attempt is made to bind to the Microsoft Message Queuing (MSMQ)
system over a network connection, this rule sets a flowbit parameter for
use in other rules.

A programming error in the MSMQ subsystem may present an attacker with
the opportunity to overflow a fixed length buffer and execute code of
their choosing on an affected host.

This rule should not generate an event.

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Affected Systems:
	Windows 98 and 98SE
	Windows 2000 sp 3 and sp 4
	Windows XP

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Attack Scenarios:

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Ease of Attack:
Simple. Expoit code exists.

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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.

Block access to RPC ports 135, 139 and 445 for both TCP and UDP 
protocols from external sources using a packet filtering firewall.

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Contributors:
Sourcefire Vulnerability Research Team
Brian Caswell <bmc@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References:

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