CVE-2024-55555 Information

Description

Invoice Ninja before 5.10.43 allows remote code execution from a pre-authenticated route when an attacker knows the APP_KEY. This is exacerbated by .env files available from the product’s repository that have default APP_KEY values. The route/hash route defined in the invoiceninja/routes/client.php file can be accessed without authentication. The parameter hash is passed to the function decrypt that expects a Laravel ciphered value containing a serialized object. (Furthermore Laravel contains several gadget chains usable to trigger remote command execution from arbitrary deserialization.) Therefore an attacker in possession of the APP_KEY is able to fully control a string passed to an unserialize function.

Reference

https://github.com/invoiceninja/invoiceninja/commit/d9302021472c3e7e23bac8c3d5fbec57a5f38f0c https://www.synacktiv.com/advisories/invoiceninja-unauthenticated-remote-command-execution-when-appkey-known