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MSRC

DiD

MS10-048 an explanation of the Defense in Depth fixes

Tuesday, August 10, 2010

Today we released several fixes on MS10-048 affecting the win32k.sys kernel component. The most severe vulnerability allows a local user to perform an authenticated elevation of privileges, with no possible remote vector. This update also includes several “Defense in Depth” measures that correct potential integer overflows in unrealistic scenarios. In this blog post we are going to walk you through these vulnerabilities to help explain the technical reasoning behind the DiD rating.