Description
The Classified Listing – Classified ads & Business Directory plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 5.4.2. This is due to a missing capability/ownership check on the gallery_image_update_as_feature AJAX handler (action: rtcl_fb_gallery_image_update_as_feature), which accepts a user-supplied listing ID and attachment ID and sets the featured image of a listing while only validating a nonce that is exposed to any logged-in user on the frontend listing-submission form. This makes it possible for authenticated attackers, with Subscriber-level access and above, to change the featured image of arbitrary listings they do not own.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected products
References
- MISChttps://www.wordfence.com/threat-intel/vulnerabilities/id/5f7660ba-c3be-44f0-91cb-809d0021759a?source=cve
- MISChttps://plugins.trac.wordpress.org/browser/classified-listing/tags/5.4.2/app/Controllers/Ajax/FormBuilderAjax.php#L590
- MISChttps://plugins.trac.wordpress.org/browser/classified-listing/tags/5.4.2/app/Controllers/Ajax/FormBuilderAjax.php#L605
- MISChttps://plugins.trac.wordpress.org/browser/classified-listing/tags/5.4.2/app/Controllers/Ajax/FormBuilderAjax.php#L617
- MISChttps://plugins.trac.wordpress.org/browser/classified-listing/tags/5.3.8/app/Controllers/Ajax/FormBuilderAjax.php#L590
- MISChttps://plugins.trac.wordpress.org/browser/classified-listing/tags/5.3.8/app/Controllers/Ajax/FormBuilderAjax.php#L605
- MISChttps://plugins.trac.wordpress.org/browser/classified-listing/tags/5.3.8/app/Controllers/Ajax/FormBuilderAjax.php#L617
- MISChttps://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3571741%40classified-listing&new=3571741%40classified-listing&sfp_email=&sfph_mail=