Microsoft Windows CSC Service Elevation of Privilege Vulnerability Exploit

The Windows Client Side Caching Driver (csc.sys) present in Microsoft Windows is vulnerable to a memory corruption vulnerability. This module allows a local unprivileged user to execute arbitrary code with SYSTEM privileges by creating a specially crafted IOCTL request. The steps performed by the binary exploit are: Null Pointer write to arbitrary kernel R/W through a CscDevFcbXXXControlFile routine which is called by RDBSS to pass a device FCB control request to the network mini-redirector not validating the input buffer in IOCTL 0x001401a3 Overwrite the thread's PreviousMode through the NULL pointer and get an arbitrary read/write memory primitive via NtWriteVirtualMemory/NtReadVirtualMemory SYSTEM token stealing Agent deployment through process injection on the LSASS.exe process