CVE-2021-24468 : Security Advisory and Response

The Leaflet Map WordPress plugin before version 3.0.0 is vulnerable to stored Cross-site Scripting (XSS) attacks due to inadequate escaping of shortcode attributes in JavaScript code or HTML. This vulnerability could be exploited by users with as low role as Contributors.

Understanding CVE-2021-24468

This CVE identifies a security issue in the Leaflet Map plugin that could allow attackers to execute malicious scripts in the context of a victim's browser.

What is CVE-2021-24468?

The CVE-2021-24468 vulnerability arises from the plugin failing to properly escape certain shortcode attributes, enabling attackers to inject and execute malicious scripts on a WordPress site using this vulnerable plugin.

The Impact of CVE-2021-24468

The impact of this CVE is significant as it allows even Contributors to exploit stored XSS issues, potentially leading to unauthorized access, data theft, or defacement of websites.

Technical Details of CVE-2021-24468

This section delves deeper into the technical aspects of the vulnerability, including its description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in Leaflet Map plugin versions prior to 3.0.0 stems from insecure handling of shortcode attributes, allowing attackers to inject malicious code that gets executed in users' browsers.

Affected Systems and Versions

The affected product is the Leaflet Map plugin with versions less than 3.0.0. Users using these versions are at risk of exploitation until they update to a secure version.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting specially-crafted shortcodes containing malicious scripts, which can then be executed in the context of an unsuspecting user's browser.

Mitigation and Prevention

To safeguard systems from CVE-2021-24468, immediate actions and long-term security practices should be implemented.

Immediate Steps to Take

Affected users are advised to update the Leaflet Map plugin to version 3.0.0 or higher as soon as possible to mitigate the risk of exploitation.

Long-Term Security Practices

It is crucial to regularly update plugins and themes, conduct security audits, and educate users about safe coding practices to prevent XSS vulnerabilities.

Patching and Updates

Developers should subscribe to security mailing lists, monitor CVE announcements, and promptly apply security patches released by plugin vendors to protect against known vulnerabilities.