CVE-2023-4153 : Security Advisory and Response

This CVE record pertains to a vulnerability identified in the BAN Users plugin for WordPress, with versions up to and including 1.5.3, allowing for privilege escalation due to a missing capability check on a specific function. Authenticated attackers, even with minimal permissions like a subscriber, could exploit this vulnerability to manipulate plugin settings and access ban/unban functionality.

Understanding CVE-2023-4153

This section provides insight into the nature and impact of CVE-2023-4153.

What is CVE-2023-4153?

CVE-2023-4153 is a vulnerability in the BAN Users plugin for WordPress, up to version 1.5.3, leading to privilege escalation through unauthorized manipulation of plugin settings. This security flaw enables attackers with limited permissions to access functionalities they should not have control over.

The Impact of CVE-2023-4153

The impact of CVE-2023-4153 is significant as it allows authenticated attackers, with minimal privileges, to exploit the vulnerability for malicious purposes. By modifying plugin settings, unauthorized users can access ban and unban features and even change the role of unbanned users, potentially leading to unauthorized access and data compromise.

Technical Details of CVE-2023-4153

Delve into the technical aspects and specifics of CVE-2023-4153 below.

Vulnerability Description

The vulnerability arises from a missing capability check in the 'w3dev_save_ban_user_settings_callback' function within the BAN Users plugin for WordPress, versions up to 1.5.3. This oversight permits attackers with limited permissions to elevate their privileges and manipulate plugin settings.

Affected Systems and Versions

The BAN Users plugin for WordPress versions up to and including 1.5.3 are affected by CVE-2023-4153. Users utilizing these versions are at risk of exploitation by authenticated attackers seeking to escalate their privileges and exploit plugin capabilities.

Exploitation Mechanism

Exploiting CVE-2023-4153 involves authenticated attackers leveraging the missing capability check on the 'w3dev_save_ban_user_settings_callback' function to modify plugin settings. By doing so, attackers can access ban and unban functionalities and alter the role of unbanned users, potentially compromising system security.

Mitigation and Prevention

Explore strategies to mitigate and prevent the exploitation of CVE-2023-4153 below.

Immediate Steps to Take

To address CVE-2023-4153, users of the BAN Users plugin for WordPress should immediately update to a patched version or disable the plugin if an update is not available. Additionally, monitoring user roles and permissions within WordPress can help prevent unauthorized privilege escalation.

Long-Term Security Practices

Implementing strong security practices, such as regular security audits, user role reviews, and keeping plugins up to date, can enhance the overall security posture of WordPress websites. Educating users on best security practices is also essential to prevent similar vulnerabilities in the future.

Patching and Updates

It is crucial for users of the BAN Users plugin for WordPress to apply patches and updates promptly. Plugin developers should release patches addressing the privilege escalation vulnerability to ensure the security of users' websites. Regularly checking for plugin updates and promptly installing them is recommended to mitigate the risk of exploitation.