CVE-2021-21421 Explained : Impact and Mitigation

This article provides details about CVE-2021-21421, a vulnerability in the node-etsy-client affecting versions prior to 0.3.0.

Understanding CVE-2021-21421

CVE-2021-21421 is a vulnerability that could lead to the exposure of sensitive information in the node-etsy-client due to API key leakage during client error reporting.

What is CVE-2021-21421?

The CVE-2021-21421 vulnerability affects the node-etsy-client, a NodeJs Etsy ReST API Client, exposing sensitive information by revealing API key values during client error reporting.

The Impact of CVE-2021-21421

The impact of CVE-2021-21421 is rated as HIGH, with a CVSS base score of 8.1. It has a high availability impact and confidentiality impact.

Technical Details of CVE-2021-21421

CVE-2021-21421 has the following technical details:

Vulnerability Description

The vulnerability in node-etsy-client exposes sensitive information due to API key leakage when reporting client errors.

Affected Systems and Versions

The affected version of node-etsy-client is < 0.3.0. Versions prior to 0.3.0 are vulnerable to this issue.

Exploitation Mechanism

The vulnerability can be exploited when applications using node-etsy-client and reporting client errors inadvertently expose API key values.

Mitigation and Prevention

To mitigate the CVE-2021-21421 vulnerability, follow these steps:

Immediate Steps to Take

Update node-etsy-client to version 0.3.0 or later to prevent API key exposure during client error reporting.

Long-Term Security Practices

Review and update error-handling mechanisms in applications to avoid unintentional data exposure in the future.

Patching and Updates

Regularly check for security updates from the vendor and apply patches promptly to address known vulnerabilities.