Vulnerability in Workstation Service Could Allow Elevation of Privilege (971657)

Summary
This host is missing a critical security update according to Microsoft Bulletin MS09-041.
Impact
Successful exploitation could allow remote attackers to execute arbitrary code with SYSTEM privileges, and can cause Denial of Service. Impact Level: System/Application
Solution
Run Windows Update and update the listed hotfixes or download and update mentioned hotfixes in the advisory from the below link, http://www.microsoft.com/technet/security/bulletin/ms09-041.mspx
Insight
The flaw is due to a double free error while processing arguments passed to the 'NetrGetJoinInformation()' function. This can be exploited to trigger a memory corruption via a specially crafted RPC request.
Affected
Microsoft Windows XP Service Pack 3 and prior Microsoft Windows 2k3 Service Pack 2 and prior Microsoft Windows Vista Service Pack 1/2 and prior. Microsoft Windows Server 2008 Service Pack 1/2 and prior.
References