CVE-2023-6934 : Exploit Details and Defense Strategies

This CVE-2023-6934 involves a vulnerability found in the Limit Login Attempts Reloaded plugin for WordPress, allowing for Stored Cross-Site Scripting attacks up to version 2.25.26. The flaw stems from inadequate input sanitization and output escaping in user-supplied attributes, enabling authenticated attackers with contributor-level permissions or higher to inject malicious web scripts.

Understanding CVE-2023-6934

This section delves into the specifics of the CVE-2023-6934 vulnerability impacting the Limit Login Attempts Reloaded plugin for WordPress.

What is CVE-2023-6934?

CVE-2023-6934 is a Stored Cross-Site Scripting vulnerability existing in versions up to 2.25.26 of the Limit Login Attempts Reloaded plugin for WordPress. Exploitation of this flaw can lead to arbitrary web script injection by authenticated attackers with contributor-level permissions or above.

The Impact of CVE-2023-6934

The vulnerability poses a medium-severity risk (CVSS base score of 6.4) to affected systems, potentially allowing attackers to execute malicious scripts within the context of a user accessing compromised pages.

Technical Details of CVE-2023-6934

Explore the technical aspects related to the CVE-2023-6934 vulnerability, including its description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises from insufficient input sanitization and output escaping within the plugin's shortcode(s), facilitating the injection of malicious web scripts by authenticated attackers possessing contributor-level permissions or above.

Affected Systems and Versions

The CVE-2023-6934 vulnerability impacts all versions of the Limit Login Attempts Reloaded plugin for WordPress up to and including version 2.25.26.

Exploitation Mechanism

By leveraging the inadequate input sanitization and output escaping in user-supplied attributes, attackers with contributor-level permissions or higher can inject and execute arbitrary web scripts on compromised pages.

Mitigation and Prevention

Discover the necessary steps to mitigate the CVE-2023-6934 vulnerability and prevent potential security risks.

Immediate Steps to Take

Update the Limit Login Attempts Reloaded plugin to a version beyond 2.25.26 to eliminate the vulnerability.
Regularly monitor security advisories from plugin developers and security researchers for patches and updates.

Long-Term Security Practices

Employ strict input validation and output encoding practices to prevent Cross-Site Scripting (XSS) vulnerabilities.
Educate users with higher permissions about the risks of executing arbitrary scripts via input fields.

Patching and Updates

Stay informed about security patches and updates released by the plugin vendor to address vulnerabilities like CVE-2023-6934 and enhance overall security posture within WordPress environments.