CVE-2021-42013 Apache HTTP Server: Emulation and Detection

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CVE-2021-42013 Apache HTTP Server: Emulation and Detection

In this lab, you’ll practice vulnerability management by assessing, testing, and mitigating a web server based path traversal and remote code execution vulnerability. When you’re finished, you’ll be able to detect exploitation attempts and re-configure an Apache HTTP server so that it's protected against CVE-2021-42013.

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Lab Info

Level

Beginner

Last updated

Oct 15, 2025

Duration

1h 15m

Challenge

Emulate

Determine if the local Apache web server is vulnerable to CVE-2021-42013 by launching an nmap version scan, then prove that the vulnerability is exploitable by testing for path traversal and remote code execution.
Challenge

Detect

Access the web server and use native Linux tools to explore access and error logs for attempts to exploit the CVE-2021-42013 vulnerability.
Challenge

Protect

Modify the httpd configuration file to mitigate the CVE-2021-42013 vulnerability.
Challenge

The Last Challenge

Welcome to the final challenge! This is your last chance to experiment in the environment. Clicking Finish Lab will end this little world that flittered into existence just for you.

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