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Lucee Arbitrary File Write (CVE-2021-21307)
cve-2021 | Level: Easy | Total Lab Runs: 0 | Premium Lab |
What is Lucee Server?
Lucee Server is a dynamic, Java-based (JSR-223), tag and scripting language used for rapid web application development.
What is CVE-2021-21307?
Lucee Admin before versions 184.108.40.206, 220.127.116.11 or 18.104.22.168 is vulnerable to an unauthenticated remote code exploit.
In this lab environment, the user is going to get access to a Kali GUI instance. A Lucee instance vulnerable to an unauthenticated, remote code exploit, identified by CVE-2021-21307, is running on the target server. It can be accessed using the tools installed on Kali at http://demo.ine.local:8888.
Objective: Exploit the unauthenticated, remote code execution vulnerability in Lucee Admin to gain shell access on the target server and retrieve the flag present in the system's root directory!
This lab is dedicated to you! No other users are on this network :)
Once you start the lab, you will have access to a root terminal of a Kali instance
Your Kali has an interface with IP address 192.X.Y.2. Run "ip addr" to know the values of X and Y.
The target application should be accessible at http://demo.ine.local:8888.
Do not attack the gateway located at IP address 192.X.Y.1
The following activities are strictly prohibited on this website unless otherwise explicitly stated as allowed in the mission statement:
- Using automated scanners
- Using brute force attacks
- Denial of Service attacks
- Attacking other student machines in challenges where you might achieve a shell on the vulnerable system
- Attacking the lab infrastructure
Users violating the above will be either temporarily or permanently banned from the website.
If you are unsure about an activity, then please contact support to confirm that it is allowed on our website.
Technical Support for this Lab:
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- Giving hints for a lab exercise
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