CVE-2024-12213: Apusthemes Superio Privilege Escalation

CVE-2024-12213 Overview

CVE-2024-12213 is a privilege escalation vulnerability affecting the WP Job Board Pro plugin for WordPress in all versions up to and including 1.2.76. The vulnerability exists due to improper access control in the user registration process, allowing attackers to supply an arbitrary 'role' field when registering new accounts. This flaw enables unauthenticated attackers to register as administrators on vulnerable WordPress sites, granting them complete control over the affected website.

Critical Impact

Unauthenticated attackers can register as administrators on vulnerable WordPress sites, leading to complete site takeover, data theft, malware injection, and defacement.

Affected Products

• WP Job Board Pro plugin for WordPress versions up to and including 1.2.76
• Apusthemes Superio WordPress theme (bundled with vulnerable plugin)

Discovery Timeline

• 2025-02-12 - CVE-2024-12213 published to NVD
• 2025-02-20 - Last updated in NVD database

Technical Details for CVE-2024-12213

Vulnerability Analysis

This vulnerability is classified under CWE-266 (Incorrect Privilege Assignment). The WP Job Board Pro plugin fails to properly validate user-supplied input during the account registration process. Specifically, the plugin accepts a user-controllable 'role' parameter without verifying whether the requester has permission to assign that role. WordPress's role-based access control system defines multiple user roles including Subscriber, Contributor, Author, Editor, and Administrator, each with escalating privileges.

By exploiting this flaw, an unauthenticated attacker can craft a registration request that includes the 'administrator' role value, effectively bypassing the intended registration flow that would normally assign a low-privilege role. Once registered as an administrator, the attacker gains full control over the WordPress installation, including the ability to install malicious plugins, modify site content, access sensitive user data, and potentially compromise the underlying server.

Root Cause

The root cause of this vulnerability is the lack of proper input validation and authorization checks in the user registration handler. The plugin directly accepts and processes the 'role' field from user input without sanitizing it or verifying that only authorized values are permitted. In a secure implementation, the registration process should either not accept a role parameter at all (defaulting to a low-privilege role) or should strictly validate that the supplied role matches an allowed whitelist of non-administrative roles.

Attack Vector

The attack is executed remotely over the network without requiring any prior authentication or user interaction. An attacker simply needs to identify a WordPress site using the vulnerable WP Job Board Pro plugin and submit a crafted registration request with the role parameter set to 'administrator' or equivalent privileged role. The attack can be automated and scaled across multiple vulnerable sites. Once the malicious administrator account is created, the attacker can log in through the standard WordPress admin interface and gain complete administrative access to the site.

Since this vulnerability requires no authentication and can be exploited over the network with low complexity, it presents a significant risk to any WordPress installation running the affected plugin versions. The impact includes complete compromise of confidentiality, integrity, and availability of the affected site.

Detection Methods for CVE-2024-12213

Indicators of Compromise

• Unexpected administrator accounts appearing in WordPress user lists
• New user registrations with administrator privileges that were not created by legitimate site administrators
• Registration activity logs showing accounts created with elevated roles
• Suspicious login activity from newly created administrator accounts

Detection Strategies

• Monitor WordPress user creation events for any new accounts with administrator or elevated roles
• Implement file integrity monitoring on WordPress core files, themes, and plugins to detect unauthorized modifications
• Review web server access logs for POST requests to registration endpoints containing suspicious parameters
• Deploy Web Application Firewall (WAF) rules to detect and block requests containing role escalation attempts in registration forms

Monitoring Recommendations

• Enable WordPress audit logging to track all user registration and role assignment activities
• Configure alerts for any new administrator account creation events
• Implement regular automated scans of WordPress user tables to identify unauthorized privileged accounts
• Monitor for plugin and theme modifications that could indicate post-exploitation activity

How to Mitigate CVE-2024-12213

Immediate Actions Required

• Update WP Job Board Pro plugin to a version newer than 1.2.76 that addresses this vulnerability
• Audit all existing WordPress user accounts and remove any unauthorized administrator accounts
• Review recent registration activity for signs of exploitation
• Consider temporarily disabling user registration until the patch is applied if the feature is not critical

Patch Information

Site administrators should update the WP Job Board Pro plugin to the latest available version. The vulnerability affects all versions up to and including 1.2.76. For additional details, refer to the Wordfence Vulnerability Report and the ThemeForest Product Page for update information.

Workarounds

• Disable user registration functionality in WordPress Settings if not required for business operations
• Implement additional authentication layers such as CAPTCHA or email verification for registration
• Deploy a Web Application Firewall (WAF) with rules to filter registration requests containing unauthorized role parameters
• Use security plugins to restrict registration capabilities and enforce role assignment policies