CVE-2025-48813：Windows虚拟安全模式密钥过期欺骗漏洞

# CVE-2025-48813 PoC - Conceptual Exploit for VSM Expired Key Spoofing # Note: This is a conceptual PoC based on vulnerability description. # Actual exploitation requires deep knowledge of Windows VSM internals. import subprocess import ctypes import sys # Step 1: Check if current user has local access (required: PR:L) def check_local_access(): """Verify we have local low-privileged access""" try: result = subprocess.run(['whoami'], capture_output=True, text=True) print(f"[+] Current user: {result.stdout.strip()}") return True except Exception as e: print(f"[-] Access check failed: {e}") return False # Step 2: Check VSM/VBS status on the system def check_vsm_status(): """Check if Virtual Secure Mode is enabled""" try: result = subprocess.run( ['powershell', '-Command', '(Get-CimInstance -Class Win32_DeviceGuard -Namespace root\Microsoft\Windows\DeviceGuard).VirtualizationBasedSecurityStatus'], capture_output=True, text=True ) print(f"[+] VBS Status: {result.stdout.strip()}") return result.stdout.strip() except Exception as e: print(f"[-] VSM check failed: {e}") return None # Step 3: Attempt to exploit expired key in VSM # The vulnerability allows using keys past their expiration date def exploit_expired_key(): """ Conceptual exploit: The VSM fails to properly invalidate expired keys. An attacker with local access can attempt to leverage expired keys for spoofing operations within the VSM context. """ print("[*] CVE-2025-48813 - VSM Expired Key Spoofing") print("[*] Attempting to leverage expired key vulnerability...") # In a real exploit, the attacker would: # 1. Identify expired VSM security keys still accepted by the system # 2. Use these keys to forge authentication tokens # 3. Perform spoofing operations within the VSM protected context # 4. Potentially bypass Credential Guard protections # This requires interaction with low-level Windows kernel structures # and VSM security subsystem internals print("[!] This is a conceptual demonstration only") print("[!] Actual exploitation requires kernel-level access and") print("[!] detailed knowledge of VSM key management internals") if __name__ == "__main__": if check_local_access(): vsm_status = check_vsm_status() if vsm_status: exploit_expired_key() else: print("[-] VSM not detected or not enabled") else: print("[-] Local access required for exploitation")