CVE-2021-23421 Explained : Impact and Mitigation

A detailed overview of CVE-2021-23421 highlighting the vulnerability, impact, technical details, and mitigation strategies.

Understanding CVE-2021-23421

This section delves into the specifics of the CVE-2021-23421 vulnerability.

What is CVE-2021-23421?

The vulnerability affects all versions of the 'merge-change' package, making them susceptible to Prototype Pollution through the 'utils.set' function.

The Impact of CVE-2021-23421

With a CVSS base score of 5.6, this vulnerability poses a medium risk due to its potential for network-based attacks that could compromise confidentiality, integrity, and availability.

Technical Details of CVE-2021-23421

Explore the technical intricacies of CVE-2021-23421 to better understand its nature.

Vulnerability Description

CVE-2021-23421 exposes a security flaw in the 'merge-change' package that allows attackers to exploit Prototype Pollution via the 'utils.set' function.

Affected Systems and Versions

All versions of the 'merge-change' package are impacted by this vulnerability, specifically those with a version of '0' or custom versions.

Exploitation Mechanism

The vulnerability can be exploited remotely with high complexity, requiring no privileges, and resulting in low impact on availability, confidentiality, and integrity.

Mitigation and Prevention

Discover the steps to mitigate the risks associated with CVE-2021-23421 and prevent potential security breaches.

Immediate Steps to Take

Users are advised to update to a non-vulnerable version of the 'merge-change' package and monitor for any unusual activities that may indicate exploitation.

Long-Term Security Practices

Implement security best practices such as code reviews, input validation, and security testing to bolster overall defense against similar vulnerabilities.

Patching and Updates

Stay informed about security patches and updates for the 'merge-change' package to address known vulnerabilities and enhance system security.