Apache Troubleshooting Scenarios

Scenario: "Tokyo": can't serve web file

Level: Medium

Type: Fix

Access: Email

Description: There's a web server serving a file /var/www/html/index.html with content "hello sadserver" but when we try to check it locally with an HTTP client like curl 127.0.0.1:80, nothing is returned. This scenario is not about the particular web server configuration and you only need to have general knowledge about how web servers work.

Test: curl 127.0.0.1:80 should return: hello sadserver

Time to Solve: 15 minutes.

Scenario: "Toulon": Denied Lamp

Level: Medium

Type: Fix

Access: Business

Description: The security team has asked again Mary and John to implemente more security measures. Unfortunately, this time they have broken the LAMP stack (Apache with PHP) so the frontend is unable get an answer upstream, thus, they need your help again to fix it.

The fixed application should be able to serve the content from the webserver, the problem is a network connectivity, although the logs have valuable informatiion, it has nothing to do with the configuration of the apache server.

Test: curl localhost | head -n1 returns SadServers - LAMP Stack

The "Check My Solution" button runs the script /home/admin/agent/check.sh, which you can see and execute.

Time to Solve: 15 minutes.

Scenario: "Marseille": Rocky security

Level: Medium

Type: Fix

Access: Paid

Description: As the Christmas shopping season approaches, the security team has asked Mary and John to implemente more security measures. Unfortunately, this time they have broken the LAMP stack; the frontend is unable get an answer from upstream, thus they need your help again to fix it.

The application should be able to serve the content from the webserver.

Note for Pro users: direct SSH access is not avaiable (yet) for this scenario.

Test: curl localhost | head -n1 returns SadServers - LAMP Stack

The "Check My Solution" button runs the script /home/admin/agent/check.sh, which you can see and execute.

Time to Solve: 15 minutes.

Scenario: "Roseau": Hack a Web Server

Level: Hard

Type: Hack

Access: Email

Description: There is a secret stored in a file that the local Apache web server can provide. Find this secret and have it as a /home/admin/secret.txt file.

Note that in this server the admin user is not a sudoer.

Also note that the password crackers Hashcat and Hydra are installed from packages and John the Ripper binaries have been built from source in /home/admin/john/run

Test: sha1sum /home/admin/secret.txt |awk '{print $1}' returns cc2c322fbcac56923048d083b465901aac0fe8f8

Time to Solve: 30 minutes.