CVE-2026-40224 systemd本地权限提升漏洞

#!/usr/bin/env python3 # Proof of Concept for CVE-2026-40224 # This script is for educational purposes to demonstrate the check logic. import subprocess import sys def check_systemd_version(): try: # Get systemd version result = subprocess.run(['systemctl', '--version'], capture_output=True, text=True) version_line = result.stdout.split('\n')[0] print(f"[+] Detected System: {version_line}") # Check if version is 259 (Vulnerable range) if '259' in result.stdout: print("[!] Target appears to be running a vulnerable version (systemd 259).") print("[*] Attempting to simulate varlink interaction...") # Note: Actual exploit requires specific varlink payload construction # to reach the root namespace via systemd-machined. print("[!] Potential Privilege Escalation vector confirmed via CVE-2026-40224.") else: print("[-] System version does not match the vulnerable range (systemd 259).") except FileNotFoundError: print("[-] 'systemctl' not found. This might not be a systemd-based system.") except Exception as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": if os.geteuid() == 0: print("[WARNING] Running as root. Run as a low-privilege user to simulate PR:L.") check_systemd_version()