CVE-2019-14364 : Exploit Details and Defense Strategies

A security flaw known as XSS has been found in version 4.1.6 of the "Email Subscribers & Newsletters" plugin for WordPress, allowing attackers to insert harmful JavaScript code.

Understanding CVE-2019-14364

This CVE identifies an XSS vulnerability in a specific version of a WordPress plugin, enabling attackers to exploit a publicly accessible subscription form.

What is CVE-2019-14364?

This CVE refers to a Cross-Site Scripting (XSS) vulnerability present in version 4.1.6 of the "Email Subscribers & Newsletters" plugin for WordPress. Attackers can inject malicious JavaScript code by manipulating a specific parameter in a POST request.

The Impact of CVE-2019-14364

The vulnerability allows attackers to execute arbitrary code in the context of the affected site, potentially leading to various malicious activities such as data theft, unauthorized actions, or complete site takeover.

Technical Details of CVE-2019-14364

This section provides more detailed technical insights into the vulnerability.

Vulnerability Description

The flaw in version 4.1.6 of the plugin allows attackers to insert harmful JavaScript code by manipulating the esfpx_name parameter in the wp-admin/admin-ajax.php POST request.

Affected Systems and Versions

Affected Version: 4.1.6 of the "Email Subscribers & Newsletters" plugin for WordPress
Systems: WordPress websites with the vulnerable plugin version installed

Exploitation Mechanism

Attackers exploit the vulnerability by inserting malicious JavaScript code through the esfpx_name parameter in the wp-admin/admin-ajax.php POST request.

Mitigation and Prevention

To address and prevent the exploitation of CVE-2019-14364, follow these steps:

Immediate Steps to Take

Update the plugin to the latest version to patch the vulnerability
Monitor website activity for any suspicious behavior
Consider implementing a Web Application Firewall (WAF) to mitigate XSS attacks

Long-Term Security Practices

Regularly update all plugins and themes to their latest versions
Educate users on safe browsing practices and the risks of clicking on unknown links
Conduct security audits and penetration testing regularly to identify vulnerabilities

Patching and Updates

Ensure timely installation of security patches and updates released by the plugin developer to address known vulnerabilities.