CVE-2021-4411 Explained : Impact and Mitigation
Learn about CVE-2021-4411 affecting WP EasyPay – Square for WordPress plugin, allowing CSRF attacks to trigger unauthorized transactions downloads. Find mitigation steps here.
A detailed article on CVE-2021-4411, a vulnerability in the WP EasyPay – Square for WordPress plugin that allows for Cross-Site Request Forgery attacks.
Understanding CVE-2021-4411
This section provides an overview of the CVE-2021-4411 vulnerability affecting the WP EasyPay – Square for WordPress plugin.
What is CVE-2021-4411?
The WP EasyPay – Square for WordPress plugin for WordPress is susceptible to Cross-Site Request Forgery in versions up to, and including, 3.2.0. The issue arises from missing or incorrect nonce validation on the wpep_download_transaction_in_excel() function, enabling unauthenticated attackers to trigger a transactions download via a forged request.
The Impact of CVE-2021-4411
The vulnerability in CVE-2021-4411 allows attackers to perform Cross-Site Request Forgery attacks, potentially leading to unauthorized transactions download by tricking site administrators into taking actions like clicking on a link.
Technical Details of CVE-2021-4411
Below are the technical details including the vulnerability description, affected systems and versions, and exploitation mechanism.
Vulnerability Description
The vulnerability in WP EasyPay – Square for WordPress plugin is due to missing or incorrect nonce validation on the wpep_download_transaction_in_excel() function, paving the way for unauthenticated attackers to trigger transactions download through a forged request.
Affected Systems and Versions
The vulnerability impacts WP EasyPay – Square for WordPress plugin versions up to and including 3.2.0.
Exploitation Mechanism
Unauthenticated attackers can exploit this vulnerability by tricking site administrators into performing actions like clicking on a link, leading to unauthorized transactions download.
Mitigation and Prevention
Discover the steps to mitigate the risks posed by CVE-2021-4411.
Immediate Steps to Take
Site administrators are advised to update the WP EasyPay – Square for WordPress plugin to version 3.2.1 or later to address the CSRF vulnerability.
Long-Term Security Practices
Implementing secure coding practices and regularly updating plugins can help prevent CSRF attacks on WordPress sites.
Patching and Updates
Stay informed about security patches and updates for your WordPress plugins to ensure vulnerabilities like CVE-2021-4411 are promptly addressed.