CVE-2023-2767 : Vulnerability Insights and Analysis

This CVE-2023-2767 impacts the WordPress File Upload and WordPress File Upload Pro plugins for WordPress due to Stored Cross-Site Scripting vulnerabilities in versions up to and including 4.19.1. It allows authenticated attackers with administrator-level permissions to inject arbitrary web scripts, affecting multi-site installations and instances where unfiltered_html is disabled.

Understanding CVE-2023-2767

This section will delve into what CVE-2023-2767 entails, its impact, technical details, and mitigation strategies.

What is CVE-2023-2767?

CVE-2023-2767 refers to Stored Cross-Site Scripting vulnerabilities in the WordPress File Upload and WordPress File Upload Pro plugins for WordPress. It occurs due to insufficient input sanitization and output escaping, enabling attackers to inject malicious web scripts through admin settings.

The Impact of CVE-2023-2767

The vulnerability allows attackers with administrator-level permissions to execute arbitrary web scripts on pages, leading to potential compromises when users access the injected pages. This security flaw poses a medium-level threat to affected WordPress sites.

Technical Details of CVE-2023-2767

To better understand this CVE, let's explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The Stored Cross-Site Scripting vulnerability in the WordPress File Upload and WordPress File Upload Pro plugins allows authenticated attackers to inject malicious web scripts via admin settings, affecting versions up to and including 4.19.1.

Affected Systems and Versions

The impacted systems include WordPress installations with the WordPress File Upload and WordPress File Upload Pro plugins up to version 4.19.1. This vulnerability specifically affects multi-site installations and instances where unfiltered_html is disabled.

Exploitation Mechanism

Attackers with administrator-level permissions exploit this vulnerability by injecting arbitrary web scripts into pages through the admin settings, enabling the execution of malicious scripts when users interact with the compromised pages.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2023-2767 through security best practices, updates, and patches.

Immediate Steps to Take

Site administrators should promptly update the WordPress File Upload and WordPress File Upload Pro plugins to versions that address the Stored Cross-Site Scripting vulnerability. Additionally, monitoring for any unusual activities on affected sites can help detect potential exploitation attempts.

Long-Term Security Practices

Implementing robust input sanitization and output escaping measures, regular security audits, and educating users on safe practices can enhance the overall security posture of WordPress sites, reducing the likelihood of successful attacks.

Patching and Updates

Staying vigilant for security advisories from plugin developers and promptly applying patches and updates can safeguard WordPress sites against known vulnerabilities like CVE-2023-2767. Regularly maintaining and updating plugins and core software is crucial for maintaining a secure WordPress environment.