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 an...

微软在 5 月安全公告中包含并修复了 4 个 win32k 内核提权漏洞。这篇文章将通过补丁对比的方式，发现并分析补丁程序中修复的一个由某处空指针解引用导致的提权漏洞，最终实现其验证和利用代码。分析和调试的过程将在 Windows 7 x86 SP1 基础环境的虚拟机中进行。