ProLink PRS1841 Backdoor Account

`# Exploit Title: Router backdoor - ProLink PRS1841 PLDT Home fiber  
# Exploit Author: Lawrence Amer @zux0x3a  
# Vendor Homepage: https://prolink2u.com/product/prs1841/  
# Firmware : PRS1841 U V2  
# reference: https://0xsp.com/security%20research%20%20development%20srd/backdoor-discovered-in-pldt-home-fiber-routers/  
  
Description  
========================  
A silent privileged backdoor account discovered on the Prolink PRS1841   
routers; allows attackers to gain command execution privileges to the   
router OS.  
  
The vulnerable account issued by the vendor was identified as "adsl" and   
"realtek" as the default password; attackers could use this account to   
access the router remotely/internally using either Telnet or FTP   
protocol.  
  
PoC  
=============================  
adsl:$1$$m9g7v7tSyWPyjvelclu6D1:0:0::/tmp:/bin/cli  
  
`