CVE-2021-34668 : Security Advisory and Response

WordPress Real Media Library plugin version 4.14.1 and below are susceptible to Stored Cross-Site Scripting (XSS) due to improper validation of user-supplied data. This allows attackers with author-level permissions to execute malicious scripts.

Understanding CVE-2021-34668

This CVE highlights a security vulnerability in the WordPress Real Media Library plugin that could be exploited by an attacker with author-level access to inject arbitrary web scripts.

What is CVE-2021-34668?

The vulnerability in the WordPress Real Media Library plugin up to version 4.14.1 enables stored cross-site scripting (XSS) through the 'name' parameter in the '~/inc/overrides/lite/rest/Folder.php' file.

The Impact of CVE-2021-34668

Author-level attackers can abuse this vulnerability to inject and execute arbitrary web scripts within folder names. This could lead to various malicious activities such as stealing sensitive information, unauthorized access, or defacing websites.

Technical Details of CVE-2021-34668

This section provides in-depth technical insights into the vulnerability.

Vulnerability Description

The flaw originates from improper input validation in the 'name' parameter of the '~/inc/overrides/lite/rest/Folder.php' file, allowing script injection by author-level users.

Affected Systems and Versions

WordPress Real Media Library plugin versions up to and including 4.14.1 are impacted by this vulnerability.

Exploitation Mechanism

Attackers with author-level permissions exploit the 'name' parameter to inject malicious scripts within folder names, which get executed in the context of authenticated users.

Mitigation and Prevention

To address CVE-2021-34668, immediate actions and long-term security practices are recommended.

Immediate Steps to Take

Users are advised to update the WordPress Real Media Library plugin to version 4.14.2 or newer to mitigate the vulnerability.

Long-Term Security Practices

Maintain a proactive security posture by regularly updating plugins, enforcing the principle of least privilege, and monitoring for anomalous activities.

Patching and Updates

Stay informed about security patches and updates from the plugin vendor to safeguard against known vulnerabilities.