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...

This article will analyze a UAF vulnerability in win32k Window Manager (User) Subsystem in Windows: CVE-2015-2546. Similar to CVE-2017-0263 analyzed in the previous article, this vulnerability is use-after-free of popup menu tagPOPUPMENU object as well. The analyzing environment is Windows 7 x86 SP1...

CVE-2017-0263 is a UAF vulnerability in Menu Management Component in win32k kernel module of Windows operating system, which was reported to be used to attack with an EPS vulnerability to interfere the French election. This article will simply analyze the CVE-2017-0263 part of the attacking sample i...

这篇文章翻译自一篇多年之前的论文，原文作者是 Tarjei Mandt。原文系统地描述了 win32k 的用户模式回调机制以及相关的原理和思想，可以作为学习 win32k 漏洞挖掘的典范。早前曾经研读过，近期又翻出来整理了一下翻译，在这里发出来做个记录。原文链接在文后可见。