Vulnerability details

The Request a Quote plugin for WordPress is vulnerable to Code Injection in versions up to, and including, 2.5.5 via the emd_delete_file AJAX action. This is due to the emd_delete_file() handler deriving a PHP function name from the attacker-controlled $_POST['path'] parameter and invoking it dynamically via the variable-function call $sess_name(), and the handler being registered for wp_ajax_nopriv with its only protection being a nonce that the plugin prints into the public quote-form page via wp_localize_script. This makes it possible for unauthenticated attackers to invoke arbitrary zero-argument PHP functions on the server, such as phpinfo(), potentially exposing sensitive server configuration and credentials, or executing other destructive built-in PHP functions.

• https://www.wordfence.com/threat-intel/vulnerabilities/id/5a349c4f-d2e7-47af-9013-3cfa496b3b8c?source=cve
• https://plugins.trac.wordpress.org/browser/request-a-quote/tags/2.5.5/includes/common-functions.php#L1038
• https://plugins.trac.wordpress.org/browser/request-a-quote/tags/2.5.5/includes/class-install-deactivate.php#L60
• https://plugins.trac.wordpress.org/browser/request-a-quote/tags/2.5.5/includes/emd-form-builder-lite/emd-form-frontend.php#L1187
• https://plugins.trac.wordpress.org/browser/request-a-quote/tags/2.5.5/includes/common-functions.php#L1035
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3592676%40request-a-quote&new=3592676%40request-a-quote&sfp_email=&sfph_mail=