CVE-2023-4962 : Vulnerability Insights and Analysis

This CVE-2023-4962 relates to a vulnerability found in the Video PopUp plugin for WordPress, impacting versions up to and including 1.1.3. The vulnerability allows authenticated attackers with contributor-level and above permissions to execute arbitrary web scripts through stored Cross-Site Scripting (XSS) by utilizing the 'video_popup' shortcode.

Understanding CVE-2023-4962

This section delves into the specifics of CVE-2023-4962, highlighting the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2023-4962?

The CVE-2023-4962 vulnerability is a case of Stored Cross-Site Scripting (XSS) in the Video PopUp plugin for WordPress. It stems from inadequate input sanitization and output escaping on user-supplied attributes. This flaw enables attackers to inject malicious scripts into pages, which are then executed when accessed by unsuspecting users.

The Impact of CVE-2023-4962

The impact of CVE-2023-4962 is significant as it allows attackers to inject and execute arbitrary scripts within the context of the affected WordPress site. This could lead to various malicious activities, including data theft, defacement, or the introduction of further security threats.

Technical Details of CVE-2023-4962

Understanding the technical aspects of CVE-2023-4962 is crucial to comprehending the nature of the vulnerability and its implications.

Vulnerability Description

The vulnerability in the Video PopUp plugin for WordPress arises from a lack of proper input sanitization and output escaping, specifically in the 'video_popup' shortcode. This oversight permits authenticated attackers to insert harmful scripts that are executed when accessed by site visitors.

Affected Systems and Versions

The Video PopUp plugin version 1.1.3 and below are affected by CVE-2023-4962. WordPress instances using these versions of the plugin are susceptible to exploitation if proper remediation steps are not taken promptly.

Exploitation Mechanism

Exploiting CVE-2023-4962 involves crafting a malicious payload and injecting it through the 'video_popup' shortcode. Once injected, the script remains dormant until a user accesses the compromised page, triggering the execution of the payload.

Mitigation and Prevention

Addressing CVE-2023-4962 requires a comprehensive approach that includes immediate actions and long-term security practices to protect WordPress sites from potential attacks.

Immediate Steps to Take

Website administrators should update the Video PopUp plugin to a patched version beyond 1.1.3 to mitigate the vulnerability. Additionally, evaluating and sanitizing user inputs within the affected shortcode can help prevent exploitation.

Long-Term Security Practices

Implementing strict input validation, output encoding, and regular security audits can fortify WordPress sites against XSS vulnerabilities. Educating users and maintaining awareness about safe coding practices are also essential for long-term security resilience.

Patching and Updates

Regularly monitoring and applying security patches and updates for all WordPress plugins and themes can help prevent vulnerabilities like CVE-2023-4962. Maintaining an up-to-date security posture is crucial in safeguarding websites against evolving threats.