CVE-2020-27387 Information

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/php_file_name. NOTE: the vendor has patched this while leaving the version number at 1.0.0-beta.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://blog.vonahi.io/whats-in-a-re-name/ https://github.com/rapid7/metasploit-framework/pull/14340 https://github.com/ttimot24/HorizontCMS/commit/436b5ab679fd27afa3d99c023dbe103113da4fee

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8