CVE-2021-4110 : What You Need to Know

This article provides an in-depth analysis of CVE-2021-4110, a vulnerability in mruby/mruby that leads to a NULL Pointer Dereference.

Understanding CVE-2021-4110

This section delves into the details of the vulnerability, its impact, technical description, affected systems, exploitation mechanism, and mitigation strategies.

What is CVE-2021-4110?

mruby/mruby is susceptible to a NULL Pointer Dereference vulnerability. It is identified by the Common Weakness Enumeration (CWE) as CWE-476.

The Impact of CVE-2021-4110

The vulnerability has a base severity rating of CRITICAL with a CVSS base score of 9.1. It poses a high confidentiality and availability impact.

Technical Details of CVE-2021-4110

In this section, we explore the specifics of the vulnerability.

Vulnerability Description

The vulnerability in mruby/mruby allows attackers to cause a NULL Pointer Dereference.

Affected Systems and Versions

The vulnerability affects mruby/mruby versions lower than 3.1.

Exploitation Mechanism

Attackers with network access can exploit this vulnerability without the need for any special privileges.

Mitigation and Prevention

This section outlines the steps to mitigate the CVE-2021-4110 vulnerability.

Immediate Steps to Take

Users are advised to update to a version higher than 3.1 to mitigate the risk.

Long-Term Security Practices

Regularly monitoring and updating software can help prevent such vulnerabilities in the future.

Patching and Updates

Referencing the provided links, users can access patches and updates to secure their systems.