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Laravel Ignition RCE (CVE-2021-3129)
cve-2021 | Level: Easy | Total Lab Runs: 0 | Premium Lab |
What is Laravel?
Laravel is a PHP web application framework with expressive, elegant syntax, aiming to make development an enjoyable, creative experience. It attempts to take the pain out of development by easing common tasks used in the majority of web projects, such as authentication, routing, sessions, and caching.
Reference: https://laravel.com/docs/4.2/introduction
What is Laravel Ignition?
Ignition is a beautiful and customizable error page for Laravel applications. It is the default error page for new Laravel applications. It also allows to publicly share your errors on Flare. If configured with a valid Flare API key, your errors in production applications will be tracked, and you'll get notified when they happen.
Reference: https://github.com/spatie/laravel-ignition
What is CVE-2021-3129?
Ignition before 2.5.2, as used in Laravel and other products, allows unauthenticated remote attackers to execute arbitrary code because of insecure usage of file_get_contents() and file_put_contents(). This is exploitable on sites using debug mode with Laravel before 8.4.2.
The base score assigned to this unauthenticated RCE vulnerability was 9.8 (critical)!
Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-3129
Lab Environment
In this lab environment, the user is going to get access to a Kali GUI instance. A Laravel instance vulnerable to an unauthenticated RCE vulnerability, identified by CVE CVE-2021-3129, is running on the target server. It can be accessed using the tools installed on Kali at http://demo.ine.local.
Objective: Leverage the vulnerable Laravel instance to exploit the unauthenticated RCE vulnerability and retrieve the flag from the target server.
Instructions:
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.Z. Run "ip addr" to know the values of X and Y.
The target server should be located at the IP address 192.X.Y.3.
Do not attack the gateway located at IP address 192.X.Y.1
| Verify: | ||
|---|---|---|
| 1. | Flag present on the target server |
|
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:
There is a reason we provide unlimited lab time: you can take as much time as you need to solve a lab. However, we realize that sometimes hints might be necessary to keep you motivated!
We currently provide technical support limited to:
- Giving hints for a lab exercise
- In rare circumstances, if you have totally given up (NO!!!) then tell you how to solve it. This will be limited to sharing the solution video or lab report
- A lab exercise fails to load or has errors in it
If you need technical support, please email attackdefense@pentesteracademy.com clearly mention the name and link of the lab exercise and other essential details. The more descriptive you are, the faster we can help you. We will get back to you within 24 hours or less.
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