جزئیات آسیب‌پذیری

The Motors – Car Dealership & Classified Listings Plugin plugin for WordPress is vulnerable to File Deletion in all versions up to, and including, 1.4.128 The vulnerability exists because `stm_save_user_extra_fields()`, hooked to `personal_options_update`, writes the attacker-controlled `stm_dealer_logo_path` parameter directly to user meta without an ownership check binding the submitted path to the submitting user — unlike the `stm_payment_status` and `stm_lost_password_hash` fields, this field is not gated by a `manage_options` or `edit_users` capability check. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete image files belonging to other users under `wp-content/uploads` — including other users' avatars, dealer logos, and uploaded media — by storing a crafted path via their own profile and then triggering `unlink()` through the become-dealer form on their author page. Note that the two path guards (`stm_mvl_is_path_within_uploads` and `stm_mvl_is_allowed_image_file`) do restrict the attack surface to files with an image extension that resolve within the uploads basedir; files outside that directory, such as `wp-config.php` or plugin PHP files, cannot be reached.

• https://www.wordfence.com/threat-intel/vulnerabilities/id/9760bf39-6ec3-416e-95f0-3b3ce3ecdf7f?source=cve
• https://plugins.trac.wordpress.org/browser/motors-car-dealership-classified-listings/tags/1.4.126/templates/user/private/become-dealer.php#L168
• https://plugins.trac.wordpress.org/browser/motors-car-dealership-classified-listings/tags/1.4.126/includes/user-extra.php#L449
• https://plugins.trac.wordpress.org/browser/motors-car-dealership-classified-listings/tags/1.4.126/includes/helpers.php#L1400
• https://plugins.svn.wordpress.org/motors-car-dealership-classified-listings/
• https://plugins.trac.wordpress.org/changeset?reponame=&new=3774781%40motors-car-dealership-classified-listings%2Ftags%2F1.4.129&old=3766015%40motors-car-dealership-classified-listings%2Ftags%2F1.4.128