Netgear R7000 - Cross-Site Scripting

# Exploit Title: Netgear R7000 - XSS via. DHCP hostname
# Date: 11-12-2016
# Exploit Author: Vincent Yiu
# Contact: https://twitter.com/vysecurity
# Vendor Homepage: https://www.netgear.com/
# Category: Hardware / WebApp
# Version: V1.0.7.2_1.1.93 + LATEST to date
 
-Vulnerability
An user who has access to send DHCP via either VPN or Wireless connection can serve a host name with script tags to trigger XSS.

Could be potentially used to connect to open or guest WIFI hotspot and inject stored XSS into admin panel and steal cookie for authentication.

http://RouterIP/start.htm

Then visit the "view who's connected" page.
 
-Proof Of Concept
Set /etc/dhcp/dhclient.conf

send host-name "<script>alert('xss')</script>";