The Import and export users and customers plugin for WordPress is vulnerable to Privilege…

Why it is Amber

• CVSS 8.8 high

References

• https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.5.7/classes/cron.php#L101
• https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.5.7/classes/cron.php#L166
• https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.5.7/classes/cron.php#L49
• https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.5.7/classes/import.php#L1104
• https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.5.7/classes/import.php#L909
• https://plugins.trac.wordpress.org/changeset/3775652/import-users-from-csv-with-meta
• https://plugins.trac.wordpress.org/changeset/3775652/import-users-from-csv-with-meta/trunk/classes/cron.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/4db0991f-fc89-411b-b0df-1a11c9ddec1f?source=cve

Original description

The Import and export users and customers plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 2.5.11 This is due to a non-atomic multi-option write sequence in the `ACUI_Cron::save_settings()` function, which persists `acui_cron_activated`, `acui_cron_configured_by`, `acui_cron_user_id`, and `acui_cron_path_to_file` before reaching the authorization gate that calls `wp_die()` when a non-promoter submits a role. This makes it possible for authenticated attackers holding a custom delegated role with `create_users` but without `promote_users` or `edit_users` to escalate their privileges to Administrator, provided a prior administrator cron-tab save exists and no successful save intervenes before the next unattended cron tick processes the attacker's repointed CSV file.