Description
The Tatsu WordPress plugin before 3.3.12 add_custom_font action can be used without prior authentication to upload a rogue zip file which is uncompressed under the WordPress's upload directory. By adding a PHP shell with a filename starting with a dot ".", this can bypass extension control implemented in the plugin. Moreover, there is a race condition in the zip extraction process which makes the shell file live long enough on the filesystem to be callable by an attacker.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Unknown Tatsu
3.3.12 to < 3.3.12affected
References
- https://wpscan.com/vulnerability/fb0097a0-5d7b-4e5b-97de-aacafa8fffcd ↗
- https://darkpills.com/wordpress-tatsu-builder-preauth-rce-cve-2021-25094/ ↗
- http://packetstormsecurity.com/files/167190/WordPress-Tatsu-Builder-Remote-Code-Execution.html ↗
- https://www.exploit-db.com/exploits/52260 ↗
- https://packetstorm.news/files/id/190566/ ↗