Windows Client/Server Runtime Subsystem Privilege Elevation Vulnerability (2121546)

Summary
This host is missing a critical security update according to Microsoft Bulletin MS10-069.
Impact
Successful exploitation could allow attackers to execute arbitrary code with SYSTEM privileges. Impact Level: System
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/MS10-069.mspx
Insight
The flaw is caused by a heap overflow error in the 'Windows Client/Server Runtime Subsystem (CSRSS)' which does not always allocate sufficient memory when handling specific user transactions.
Affected
Microsoft Windows XP Service Pack 3 and prior. Microsoft Windows 2003 Service Pack 2.
References