CVE-2022-3721 - Critical Code Injection Vulnerability in Froxlor .10.38 and Earlier: Exploit Details, Remediation, and Mitigation

A critical code injection vulnerability has been discovered in the Froxlor Server Management Panel, a popular open-source hosting control panel. The vulnerability, tracked as CVE-2022-3721, affects versions of Froxlor prior to .10.39. This vulnerability allows remote attackers to inject arbitrary code into the application and execute it.

This long-read post aims to provide an in-depth analysis of the vulnerability, including code snippets, links to original references, and exploit details. It is crucial for administrators and developers using Froxlor to understand the details of this vulnerability and take immediate action to patch their installations.

Details

The vulnerability exists in the Froxlor Server Management Panel due to insufficient input validation when processing custom user input. An attacker can exploit this flaw to inject arbitrary code into the application.

The affected code snippet can be found in the following GitHub repository path for Froxlor: froxlor/froxlor.

Exploit

To exploit the vulnerability, an attacker needs to submit a specially crafted string containing malicious PHP code via vulnerable input fields. Once the application processes the input, the arbitrary code is injected and executed as part of the application.

For example, consider the following exploit payload

';eval("echo 'Hello, CVE-2022-3721!';");//

The attacker submits this payload as input to the vulnerable application. Upon execution, the injected PHP code will echo "Hello, CVE-2022-3721!" to demonstrate the successful code injection.

Original References

- The official CVE-2022-3721 description provides an overview of the vulnerability.
- The froxlor/froxlor GitHub repository contains all the source code and releases for Froxlor.
- The Froxlor .10.39 release notes mention the fix for this vulnerability.

Remediation and Mitigation

The Froxlor team has released version .10.39, which addresses the code injection vulnerability. To mitigate the risk, administrators are urged to update their installations to the latest version as soon as possible.

In addition to applying the patch, administrators should also follow secure coding practices and implement proper input validation techniques to prevent code injection attacks.

Conclusion

The discovery of the CVE-2022-3721 vulnerability in Froxlor's popular hosting control panel serves as a reminder for administrators and developers to remain vigilant and stay up-to-date with security updates. If you are using Froxlor in your environment, apply the .10.39 patch immediately and take necessary precautions to ensure your systems are secure.

Timeline

Published on: 11/04/2022 13:15:00 UTC
Last modified on: 11/05/2022 02:04:00 UTC