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CVE-2020-27387

Description

An unrestricted file upload issue in HorizontCMS through 1.0.0-beta allows an authenticated remote attacker (with access to the FileManager) to upload and execute arbitrary PHP code by uploading a PHP payload, and then using the FileManager's rename function to provide the payload (which will receive a random name on the server) with the PHP extension, and finally executing the PHP file via an HTTP GET request to /storage/. NOTE: the vendor has patched this while leaving the version number at 1.0.0-beta.

POC

Reference

- http://packetstormsecurity.com/files/160046/HorizontCMS-1.0.0-beta-Shell-Upload.html

- https://blog.vonahi.io/whats-in-a-re-name/

Github

- https://github.com/ARPSyndicate/cvemon

- https://github.com/Live-Hack-CVE/CVE-2020-27387