CVE-2023-4775 : What You Need to Know

This is a stored Cross-Site Scripting (XSS) vulnerability found in the Advanced iFrame plugin for WordPress, up to version 2023.8. The flaw arises from inadequate input sanitization and output escaping in the 'advanced_iframe' shortcode, enabling authenticated attackers with contributor-level permissions to inject malicious scripts into pages.

Understanding CVE-2023-4775

This section delves into the key aspects of the CVE-2023-4775 vulnerability.

What is CVE-2023-4775?

The CVE-2023-4775 vulnerability, identified in the Advanced iFrame plugin for WordPress, allows authenticated attackers with contributor-level access or higher to inject harmful web scripts that execute when a user accesses the compromised page.

The Impact of CVE-2023-4775

The impact of this vulnerability is significant as it enables attackers to execute arbitrary scripts on vulnerable WordPress sites, compromising the security and integrity of the website and potentially putting sensitive user data at risk.

Technical Details of CVE-2023-4775

This section provides more technical insights into the CVE-2023-4775 vulnerability.

Vulnerability Description

The vulnerability stems from inadequate input sanitization and output escaping in the 'advanced_iframe' shortcode, making it possible for authenticated attackers to inject malicious scripts into WordPress pages.

Affected Systems and Versions

The vulnerability affects versions of the Advanced iFrame plugin for WordPress up to and including version 2023.8. Sites using these versions are at risk of exploitation by attackers with contributor-level permissions.

Exploitation Mechanism

Attackers with contributor-level permissions or higher can exploit this vulnerability by injecting malicious web scripts using the 'advanced_iframe' shortcode, which will then execute when accessed by users, potentially leading to XSS attacks.

Mitigation and Prevention

In light of CVE-2023-4775, it is crucial to implement effective mitigation strategies to safeguard WordPress sites from potential exploitation.

Immediate Steps to Take

Update the Advanced iFrame plugin to a version beyond 2023.8 to eliminate the vulnerability.
Monitor user permissions and restrict contributors' ability to inject scripts.
Regularly scan your WordPress site for suspicious activities.

Long-Term Security Practices

Enforce secure coding practices to ensure robust input validation and output escaping in plugins.
Educate users about the risks of XSS attacks and the importance of maintaining plugin security.

Patching and Updates

Stay informed about security updates provided by plugin developers and promptly apply patches to address known vulnerabilities like CVE-2023-4775. Regularly updating plugins and monitoring security advisories are essential steps in maintaining a secure WordPress environment.