CVE-2026-5889 Chrome PDFium加密缺陷致信息泄露

import re import subprocess def check_chrome_version(): """ Check if the installed Chrome version is vulnerable. Vulnerable: Google Chrome prior to 147.0.7727.55 """ try: # Simulate getting chrome version (OS dependent) # result = subprocess.run(['google-chrome', '--version'], capture_output=True, text=True) # output = result.stdout output = "Google Chrome 146.0.7727.50" # Mock vulnerable version match = re.search(r'Chrome\s+(\d+\.\d+\.\d+\.\d+)', output) if match: version_str = match.group(1) version_parts = list(map(int, version_str.split('.'))) fixed_version = [147, 0, 7727, 55] # Simple version comparison if version_parts < fixed_version: print(f"[+] Vulnerable version found: {version_str}") return True else: print(f"[-] Version is safe: {version_str}") return False except Exception as e: print(f"Error checking version: {e}") return False def simulate_pdf_bruteforce(pdf_path): """ Conceptual PoC: Simulate a brute force attack on a weakly encrypted PDF. This demonstrates the exploitation logic without actual cryptograhic execution. """ print(f"[*] Attempting brute force on {pdf_path}...") # In a real scenario, this would use a library like pikepdf or PyPDF2 # with a dictionary attack targeting the weak encryption in PDFium. print("[!] Weak encryption detected via PDFium flaw.") print("[+] Sensitive information potentially extracted.") if __name__ == "__main__": if check_chrome_version(): simulate_pdf_bruteforce("encrypted_sample.pdf")