CVE-2026-35436 Microsoft Office Click-To-Run 本地提权漏洞

import os import sys # Proof of Concept for CVE-2026-35436 # This script simulates the exploitation of insufficient access control granularity # in Microsoft Office Click-To-Run to achieve local privilege escalation. def check_vulnerability(): # Target service path (hypothetical for demonstration) target_path = "C:\\Program Files\\Common Files\\Microsoft Shared\\ClickToRun\\" print("[*] Checking for CVE-2026-35436 vulnerability...") print(f"[*] Target path: {target_path}") # Check if current user has write access where they shouldn't # In a real exploit, this would involve creating a malicious file or DLL try: # Simulate checking write permissions or exploiting weak ACLs if os.access(target_path, os.W_OK): print("[+] Vulnerability confirmed: Write access detected on restricted directory.") print("[!] An attacker could place a malicious payload here to be executed by the service.") return True else: print("[-] Write access denied. System may be patched or not vulnerable.") return False except Exception as e: print(f"[-] Error occurred during check: {e}") return False def exploit_simulation(): # This section represents the logical steps of the exploit print("[*] Attempting to simulate privilege escalation...") # 1. Attacker creates a malicious DLL or configuration file malicious_file = "exploit.dll" print(f"[*] Crafting malicious file: {malicious_file}") # 2. Attacker leverages the access control flaw to place the file # (This would succeed if check_vulnerability returned True) print("[*] Copying malicious file to Click-To-Run directory via weak ACLs...") # 3. Wait for service restart or trigger update print("[*] Waiting for Click-To-Run service to restart or trigger update...") print("[!] If successful, code execution would occur with SYSTEM privileges.") if __name__ == "__main__": if check_vulnerability(): exploit_simulation() else: print("[!] Exploit simulation aborted.")