Microsoft Windows SMB Multiple Vulnerabilities( 14 January 2009 )

Multiple vulnerabilities have been identified in Microsoft Windows, which could be exploited by remote attackers to compromise a vulnerable system.

1. SMB Buffer Overflow Remote Code Execution Vulnerability

An unauthenticated remote code execution vulnerability exists in the way that Microsoft Server Message Block (SMB) Protocol software handles specially crafted SMB packets. An attempt to exploit the vulnerability would not require authentication, allowing an attacker to exploit the vulnerability by sending a specially crafted network message to a computer running the Server service. An attacker who successfully exploited this vulnerability could take complete control of the system. Most attempts to exploit this vulnerability would result in a system denial of service condition, however remote code execution is theoretically possible.

2. SMB Validation Remote Code Execution Vulnerability

An unauthenticated remote code execution vulnerability exists in the way that Microsoft Server Message Block (SMB) Protocol software handles specially crafted SMB packets. An attempt to exploit the vulnerability would not require authentication, allowing an attacker to exploit the vulnerability by sending a specially crafted network message to a computer running the Server service. An attacker who successfully exploited this vulnerability could cause the attacker to take complete control of the system. Most attempts to exploit this vulnerability would result in a system denial of service condition, however remote code execution is theoretically possible.

3. SMB Validation Denial of Service Vulnerability

A denial of service vulnerability exists in the way that Microsoft Server Message Block (SMB) Protocol software handles specially crafted SMB packets. An attempt to exploit the vulnerability would not require authentication, allowing an attacker to exploit the vulnerability by sending a specially crafted network message to a computer running the Server service. An attacker who successfully exploited this vulnerability could cause the computer to stop responding and restart.