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Rule:
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Sid:
3136
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Summary:
This event is generated when an attempt is made to exploit a known
vulnerability in Microsoft systems using Server Message Block (SMB).
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Impact:
Serious. Execution of arbitrary code leading to unauthorized
administrative access to the target host. Denial of Service (DoS) is
also possible.
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Detailed Information:
SMB is a client - server protocol used in sharing resources such as
files, printers, ports, named pipes and other things, between machines
on a network.
A vulnerability in the Microsoft implementation of SMB exists due to a
programming error which may present an attacker with the opportunity to
exploit the service and run code of their choosing on an affected
system. The attacker may then cause a DoS condition in the service or
possibly gain unauthorized access to the target host.
A malicious attacker can exploit the vulnerability by sending a
malicious response from a server in response to a client request using
SMB.
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Affected Systems:
Microsoft Windows 2003
Microsoft Windows 2000
Microsoft Windows XP
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Attack Scenarios:
An attacker can supply extra data in the message from the server
containing code of their choosing to be run on the client.
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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.
Turn off windows file and print services.
Use Samba as an alternative.
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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:
eEye:
http://www.eeye.com/html/research/advisories/AD20050208.html
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