CVE-2021-26276 Explained : Impact and Mitigation

This CVE involves a vulnerability in the GoDaddy node-config-shield package before version 0.2.2 for Node.js, where the

scripts/cli.js

file calls

eval

when processing a set command.

Understanding CVE-2021-26276

This section will provide insight into the nature of the CVE.

What is CVE-2021-26276?

The CVE pertains to the improper use of the set command with untrusted data in the GoDaddy node-config-shield package.

The Impact of CVE-2021-26276

Even though the vendor reportedly claims it is not a vulnerability, the potential impact lies in the risk of executing unintended code due to the use of

eval

with untrusted data.

Technical Details of CVE-2021-26276

In this section, we will delve into the technical aspects of CVE-2021-26276.

Vulnerability Description

The vulnerability arises from executing

eval

with user-controlled input, which can lead to code injection and potential exploitation.

Affected Systems and Versions

The issue affects versions of the GoDaddy node-config-shield package prior to 0.2.2 for Node.js.

Exploitation Mechanism

Exploiting this vulnerability involves crafting malicious input to be processed by the set command, triggering the

eval

function.

Mitigation and Prevention

Here, we will discuss strategies to mitigate and prevent the exploitation of CVE-2021-26276.

Immediate Steps to Take

Developers should avoid using the set command with untrusted data and consider alternative approaches to achieve the desired functionality.

Long-Term Security Practices

Implement strict input validation and avoid the use of potentially dangerous functions like

eval

in critical parts of the code.

Patching and Updates

Users are advised to update to version 0.2.2 or later of the GoDaddy node-config-shield package to mitigate the vulnerability.