CVE-2021-21398 : Security Advisory and Response

A detailed overview of CVE-2021-21398, a vulnerability in PrestaShop that could lead to XSS injection through the DataColumn Grid class.

Understanding CVE-2021-21398

This section will cover what CVE-2021-21398 entails, its impact, technical details, and mitigation strategies.

What is CVE-2021-21398?

PrestaShop, an open-source e-commerce platform, is vulnerable to XSS injection when the Grid Column Type DataColumn is misused in versions prior to 1.7.7.3.

The Impact of CVE-2021-21398

The vulnerability could allow an attacker to inject malicious HTML code, potentially leading to cross-site scripting attacks with a CVSS base score of 5.4 (Medium Severity).

Technical Details of CVE-2021-21398

This section will delve into the vulnerability description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The issue arises from improper usage of the DataColumn Grid class, enabling attackers to inject malicious HTML code into PrestaShop.

Affected Systems and Versions

PrestaShop versions >= 1.7.7.0 and < 1.7.7.3 are vulnerable to this XSS injection issue.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the Grid Column Type DataColumn, leading to the injection of harmful HTML code.

Mitigation and Prevention

Here we will discuss the immediate steps to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

Users should update their PrestaShop installations to version 1.7.7.3 to mitigate the risk of XSS injection through the DataColumn Grid class.

Long-Term Security Practices

Implement input validation mechanisms, security best practices, and regularly update and monitor PrestaShop for any security patches.

Patching and Updates

Stay informed about security advisories, commit updates, and new releases from PrestaShop to apply patches and ensure the security of your e-commerce platform.