Win32k NULL-Pointer-Dereference Analysis by Matching the May Update
Microsoft shipped and fixed four win32k kernel Escalation of Privilege vulnerabilities in the May security bulletin. This article will discover and analyze one of these vulnerabilities caused by a null pointer dereference fixed by the patch program, and will finally attempt to implement its proof and exploitation code. The analyzing and debugging process will take place in a virtual machine of Windows 7 x86 SP1 basic environment.