Rule: -- Sid: 3145 -- Summary: This event is generated when an attempt is made to exploit a known vulnerability in Microsoft systems using Server Message Block (SMB). -- Impact: Serious. Execution of arbitrary code leading to unauthorized administrative access to the target host. Denial of Service (DoS) is also possible. -- 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. -- Affected Systems: Microsoft Windows 2003 Microsoft Windows 2000 Microsoft Windows XP -- 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. -- Ease of Attack: Simple. -- False Positives: None known. -- False Negatives: None known. -- Corrective Action: Apply the appropriate vendor supplied patches. Turn off windows file and print services. Use Samba as an alternative. -- Contributors: Sourcefire Vulnerability Research Team Brian Caswell <bmc@sourcefire.com> Nigel Houghton <nigel.houghton@sourcefire.com> -- Additional References: eEye: http://www.eeye.com/html/research/advisories/AD20050208.html --