CVE-2021-23420 : What You Need to Know

This CVE-2021-23420 affects the package codeception/codeception versions 4.0.0 to less than 4.1.22, and less than 3.1.3. The vulnerability allows the RunProcess class to execute arbitrary commands when deserializing user input without proper validation.

Understanding CVE-2021-23420

This section will provide an overview of the CVE-2021-23420 vulnerability.

What is CVE-2021-23420?

CVE-2021-23420 is a vulnerability in the codeception/codeception package that enables the execution of unauthorized commands through the RunProcess class during the deserialization of unvalidated user inputs.

The Impact of CVE-2021-23420

The impact of CVE-2021-23420 is rated as HIGH severity. It poses a significant risk to the confidentiality, integrity, and availability of affected systems. The vulnerability does not require any special privileges for exploitation.

Technical Details of CVE-2021-23420

In this section, we will delve into the technical details of CVE-2021-23420.

Vulnerability Description

The vulnerability in codeception/codeception versions 4.0.0 to 4.1.22, before 3.1.3 allows threat actors to run arbitrary commands on systems deserializing user input without validation.

Affected Systems and Versions

Affected versions of codeception/codeception include 4.0.0 up to 4.1.22 and versions before 3.1.3.

Exploitation Mechanism

Threat actors can exploit this vulnerability by utilizing the RunProcess class to execute unauthorized commands during the deserialization process.

Mitigation and Prevention

This section will cover the mitigation strategies for addressing CVE-2021-23420.

Immediate Steps to Take

Users are advised to update the codeception/codeception package to a patched version immediately to mitigate the risk posed by this vulnerability.

Long-Term Security Practices

Implement secure coding practices, input validation mechanisms, and regular security audits to prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security updates and patches released by the codeception/codeception maintainers to address CVE-2021-23420 effectively.