Cockpit CMS 0.6.1 - Remote Code Execution

Cockpit before 0.6.1 allows an attacker to inject custom PHP code and achieve Remote Command Execution via registerCriteriaFunction in lib/MongoLite/Database.php, as demonstrated by values in JSON data to the /auth/check or /auth/requestreset URI.

• https://github.com/agentejo/cockpit/commits/next/lib/MongoLite/Database.php
• https://github.com/agentejo/cockpit/releases/tag/0.6.1
• https://www.exploit-db.com/exploits/49390
• https://nvd.nist.gov/vuln/detail/CVE-2020-35131