CVE-2022-30206

This is the PoC for CVE-2022-30206.

Introduction

Perform the following operations to arbitrary file deletion：

1. Run the addprinter.exe to create a printer and set the SpoolDirectory in C:\Users\Public\tmp\1.
2. Run the FileLock.exe TargetFile to redirect .SHD file to TargetFile and set a oplock on TargetFile.
3. Run the openprinter.exe to make the printer work, which will trigger the oplock, then release the oplock, the TargetFile will be deleted.

PS

1. This PoC needs to be combined with some other tricks(such as https://github.com/thezdi/PoC/tree/master/FilesystemEoPs) to make arbitrary file deletion to achieve EoP
2. If the execution is not successful at one time, you need to modify the .SHD filename of the FileLock's main.cpp. Normally, the file id is incremented by two each time after a print job, please try 00005.SHD、00007.SHD…