Information disclosure on debug page

Objective

This lab contains a debug page that discloses sensitive information about the application. To solve the lab, obtain and submit the SECRET_KEY environment variable.

Solution

After spinning the lab instance, you can view-source of the page and come really really bottom of the page where you will find the following ⁠

Phpinfo pages some discloses huge amount informations like session cookies, environment variables and alot more

Opening the path which is /cgi-bin/phpinfo.php discloses the PHPinfo pages and now our endgoal is to find SECRET_KEY right which is also available under Environment variable section

Copy and pasted the value of SECRET_KEY into the solution and lab is solved