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OpenSSL Command Injection (CVE-2022-1292)

cve-2022 | Level: Easy  | Total Lab Runs: 0 | Premium Lab | 


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What is OpenSSL?


The OpenSSL software is a robust, commercial-grade, full-featured toolkit for general-purpose cryptography and secure communication. It is licensed under an Apache-style license.


Reference: https://www.openssl.org/


What is CVE-2022-1292?


The c_rehash script does not properly sanitize shell metacharacters to prevent command injection. This script is distributed by some operating systems in a manner where it is automatically executed. On such operating systems, an attacker could execute arbitrary commands with the privileges of the script. Use of the c_rehash script is considered obsolete and should be replaced by the OpenSSL rehash command line tool. It was reported by Elison Niven (Sophos).


Reference: https://www.cve.org/CVERecord?id=CVE-2022-1292


Lab Environment


In this lab environment, the user is going to get access to an Ubuntu CLI instance. An OpenSSL version vulnerable to command injection, identified by CVE-2022-1292, is installed on the provided machine. It can be accessed using the OpenSSL family of commands from the CLI.


Objective: Leverage the improper sanitization of the shell metacharacters to exploit the command injection vulnerability.


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 Ubuntu CLI instance

  • 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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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
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