Description

The Motors – Car Dealership & Classified Listings plugin for WordPress is vulnerable to Payment Bypass via insecure user meta update in all versions up to, and including, 1.4.103 This is due to the stm_save_user_extra_fields() function updating sensitive user meta fields from POST data without verifying that the current user should have permission to modify those fields. The function hooks into the 'personal_options_update' action and only checks current_user_can('edit_user', $user_id), which passes for any user editing their own profile. This makes it possible for authenticated attackers, with Subscriber-level access and above, to set their stm_payment_status to 'completed', bypassing the PayPal payment verification and gaining access to paid Dealer membership features without completing any transaction.

Weaknesses 1

References 6

• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/motors-car-dealership-classified-listings/tags/1.4.102/includes/user-extra.php#L255
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/motors-car-dealership-classified-listings/tags/1.4.102/includes/user-extra.php#L294
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/motors-car-dealership-classified-listings/trunk/includes/user-extra.php#L294
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3468174/motors-car-dealership-classified-listings/trunk/includes/user-extra.php
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?old_path=%2Fmotors-car-dealership-classified-listings/tags/1.4.103&new_path=%2Fmotors-car-dealership-classified-listings/tags/1.4.104
• wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/34062e9a-48c2-4676-ab7d-b6334f248e8a?source=cve

Remediation