Description: A vulnerability has been reported in Microsoft Windows, which can be exploited by malicious users to compromise a vulnerable system.
The vulnerability is caused due to an error allowing code running in the context of NetworkService and LocalService accounts to access resources in other processes running with the same privileges, but with the ability to elevate their privileges to LocalSystem.
Successful exploitation allows execution of arbitrary code with LocalSystem privileges, but requires the ability to run code in an authenticated context e.g via IIS (when ASP.NET code runs in full trust or via ISAPI extensions/filters) and SQL Server (when having administrative privileges to load and run code).
Solution: Microsoft recommends specifying a WPI (Worker Process Identity) for an application pool (please see the Microsoft advisory for details).
Provided and/or discovered by: Reported by the vendor.
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