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Secure Coding: Command Injection

secure-coding-webapp | Level: Easy  | Total Lab Runs: 0 | Premium Lab

Lab Scoreboard

Lab Walkthrough Video:


While building out web applications, developers must follow best practices. And sanitizing user input is one of them. Processing unsanitized user input is responsible for many of the discovered vulnerabilities. 

In this lab, the web application is vulnerable to a Command Injection attack. A simulator is provided to simulate the attack and the source code of the application can be edited through the provided code editor.

Objective: Patch the source code of the web application to prevent the Command Injection attack. 

Instructions:

  • The attack can be simulated by clicking on "Start Attack" button on the simulator

  • In the code editor, the code changes can be saved by using the save shortcut key: CTRL+"s"

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. 

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Technical Support for this Lab:

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We currently provide technical support limited to:

  • Giving hints for a lab exercise
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