CVE-2021-21418 : Security Advisory and Response
Learn about CVE-2021-21418, a Cross-site Scripting vulnerability in PrestaShop's ps_emailsubscription module. Find out its impact, affected systems, and mitigation steps.
A security vulnerability, CVE-2021-21418, has been identified in the ps_emailsubscription module for the PrestaShop platform. This vulnerability could allow an attacker to inject malicious JavaScript code into the newsletter conditions field, leading to potential Cross-site Scripting (XSS) attacks.
Understanding CVE-2021-21418
This section provides an overview of the CVE-2021-21418 vulnerability, its impact, technical details, and mitigation strategies.
What is CVE-2021-21418?
The CVE-2021-21418 vulnerability exists in the ps_emailsubscription module of PrestaShop, allowing an attacker to execute malicious JavaScript code through the newsletter conditions field.
The Impact of CVE-2021-21418
If exploited, this vulnerability could enable an attacker to perform Cross-site Scripting (XSS) attacks on the PrestaShop platform, potentially compromising user data and system integrity.
Technical Details of CVE-2021-21418
Let's delve into the technical aspects of CVE-2021-21418, including vulnerability description, affected systems, and exploitation mechanism.
Vulnerability Description
The ps_emailsubscription module in PrestaShop allows employees to inject JavaScript into the newsletter conditions field, leading to potential execution of malicious code on the front office.
Affected Systems and Versions
The vulnerability affects versions of ps_emailsubscription prior to version 2.6.1.
Exploitation Mechanism
An attacker can exploit this vulnerability by injecting malicious JavaScript code into the newsletter conditions field, which will then be executed on the front office.
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the CVE-2021-21418 vulnerability and implement long-term security practices to protect your system.
Immediate Steps to Take
Update the ps_emailsubscription module to version 2.6.1 or higher to patch the vulnerability and prevent potential exploitation.
Long-Term Security Practices
Enforce secure coding practices, input validation mechanisms, and regular security audits to prevent XSS vulnerabilities in web applications.
Patching and Updates
Regularly monitor and apply security patches, updates, and fixes provided by PrestaShop to address known vulnerabilities and enhance system security.