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LimeSurvey RCE (CVE-2021-44967)
cve-2021 | Level: Easy | Total Lab Runs: 0 | Premium Lab |
As noted on the project's GitHub page:
Limesurvey is the number one open-source survey software.
Advanced features like branching and multiple question types make it a valuable partner for survey-creation.
In this lab, we will learn how to exploit the authenticated remote code execution vulnerability (CVE-2021-44967) in the LimeSurvey application by uploading a malicious plugin containing arbitrary PHP code.
In this lab environment, the user is going to get access to a Kali GUI instance. A vulnerable instance of the LimeSurvey application is hosted on the target server. It can be accessed using the tools installed on Kali at http://demo.ine.local.
Objective: Leverage the plugin upload functionality to obtain code execution on the target server and retrieve the flag.
Use the following credentials to access LimeSurvey's admin panel:
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 Jetty server should be located at the IP address 192.X.Y.3. It can be accessed using the hostname demo.ine.local.
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.
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