Smart Custom Fields Vulnerability – Missing Authorization to Authenticated (Subscriber+) Post Content Disclosure – CVE-2024-1995 | WordPress Plugin Vulnerability Report

Q: What is CVE-2024-1995?

What is CVE-2024-1995? CVE-2024-1995 is a designated code for a specific security vulnerability identified in the Smart Custom Fields plugin for WordPress. This vulnerability was found in versions up to and including 4.2.2 and allowed authenticated users with subscriber-level access or higher to view content from password-protected and private posts, which should not be accessible without proper permissions. The issue was due to a missing capability check in the relational_posts_search() function of the plugin. Addressing this vulnerability was crucial to prevent unauthorized content disclosure and maintain the integrity and privacy of WordPress sites using Smart Custom Fields.

Q: How can I tell if my WordPress site is affected by this vulnerability?

How can I tell if my WordPress site is affected by this vulnerability? Your WordPress site might be affected by CVE-2024-1995 if you have the Smart Custom Fields plugin installed and it's version 4.2.2 or older. You can check the version of the plugin by going to the Plugins section of your WordPress dashboard and locating Smart Custom Fields in the list. If your plugin version matches or precedes 4.2.2, it's important to update it immediately to the patched version to secure your site from potential exploitation of this vulnerability.

Q: What are the potential risks of CVE-2024-1995?

What are the potential risks of CVE-2024-1995? The CVE-2024-1995 vulnerability in the Smart Custom Fields plugin poses several risks, including unauthorized disclosure of sensitive content. Attackers could exploit this flaw to access password-protected and private posts, leading to potential privacy breaches and data leaks. Such unauthorized access could harm your website's reputation, erode user trust, and potentially lead to regulatory or legal issues, especially if sensitive or personal data is exposed.

Q: How do I update the Smart Custom Fields plugin to address this vulnerability?

How do I update the Smart Custom Fields plugin to address this vulnerability? To address CVE-2024-1995, you should update the Smart Custom Fields plugin to version 5.0.0 or later, which contains the necessary security fix. In your WordPress dashboard, go to the Plugins section, find Smart Custom Fields, and you should see an option to update the plugin if your version is out of date. Before updating, it's always a good idea to back up your WordPress site to avoid any data loss or unintended consequences that might arise during the update process.

Q: Are there any alternative plugins to Smart Custom Fields that I could use?

Are there any alternative plugins to Smart Custom Fields that I could use? While Smart Custom Fields is a popular choice for adding custom fields to WordPress sites, there are alternatives available, such as Advanced Custom Fields (ACF) and Custom Field Suite. These plugins offer similar functionality for managing custom fields and meta data within WordPress. When considering alternatives, it's important to assess their features, ease of use, compatibility with your current WordPress theme and other plugins, and their security track record to ensure they meet your needs and maintain the security of your site.

Q: What steps can I take to improve my WordPress site's security?

What steps can I take to improve my WordPress site's security? Improving your WordPress site's security involves regularly updating the WordPress core, themes, and plugins to their latest versions to patch known vulnerabilities. Additionally, using strong, unique passwords for all user accounts, implementing two-factor authentication, and limiting login attempts can help protect against unauthorized access. Using a security plugin that offers features like firewall protection, malware scanning, and regular security audits can further enhance your site's security and help prevent potential breaches.

Q: How often should WordPress plugins be updated?

How often should WordPress plugins be updated? WordPress plugins should be updated as soon as new updates are available, especially if they include security patches. Developers frequently release updates to address vulnerabilities, add new features, or improve compatibility, so keeping your plugins up to date is essential for maintaining a secure and functional website. It's a good practice to check for updates regularly, at least once a week, and ensure that automatic updates are enabled for critical security patches.

Q: Can a plugin vulnerability affect my entire WordPress site?

Can a plugin vulnerability affect my entire WordPress site? Yes, a vulnerability in a single WordPress plugin can potentially affect your entire site. Exploits can lead to unauthorized access, data breaches, insertion of malicious code, and other security issues that compromise not just the plugin but also the wider site functionality and security. This is why it's critical to maintain a proactive approach to security, regularly updating all site components and implementing comprehensive security measures to protect your site.

Q: What should I do if I suspect my site has been compromised due to CVE-2024-1995?

What should I do if I suspect my site has been compromised due to CVE-2024-1995? If you suspect your site has been compromised due to CVE-2024-1995 or any other vulnerability, immediately update the affected plugin to the patched version. Additionally, review your site for any unauthorized changes, particularly in the visibility settings of sensitive content, and check user activity logs for signs of exploitation. Consulting with a cybersecurity professional or service can provide a thorough investigation and remediation if a breach is confirmed. Implementing additional security measures, such as changing passwords and scanning for malware, may also be necessary to secure your site.

Q: Where can I find more information about WordPress plugin vulnerabilities and security updates?

Where can I find more information about WordPress plugin vulnerabilities and security updates? To stay informed about WordPress plugin vulnerabilities and security updates, regularly visit the official WordPress Plugin Directory, where updates and security notices are frequently posted. Additionally, security blogs and websites like Wordfence, Sucuri, and the WPScan Vulnerability Database offer timely information on discovered vulnerabilities, security patches, and best practices for WordPress security. Subscribing to security newsletters from these reputable sources and participating in WordPress forums and communities can also provide insights and alerts about emerging threats, helping you keep your WordPress site secure.

By Your WP Guy | March 19, 2024

Plugin Name: Smart Custom Fields

Key Information:

Software Type: Plugin
Software Slug: smart-custom-fields
Software Status: Active
Software Author: inc2734
Software Downloads: 224,550
Active Installs: 50,000
Last Updated: March 19, 2024
Patched Versions: 5.0.0
Affected Versions: <= 4.2.2

Vulnerability Details:

Name: Smart Custom Fields <= 4.2.2
Title: Missing Authorization to Authenticated (Subscriber+) Post Content Disclosure
Type: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVE: CVE-2024-1995
CVSS Score: 4.3
Publicly Published: March 19, 2024
Researcher: Lucio Sà
Description: The Smart Custom Fields plugin for WordPress contains a vulnerability in versions up to and including 4.2.2, where a missing capability check in the relational_posts_search() function allows authenticated users with subscriber-level access or higher to view content from password-protected and private posts.

Summary:

The Smart Custom Fields plugin, widely utilized for adding custom fields to WordPress sites, was found to have a significant security flaw in versions up to 4.2.2, identified as CVE-2024-1995. This vulnerability allowed authenticated users with minimal permissions to bypass content restrictions and access sensitive post content. The issue has been resolved in the latest update, version 5.0.0.

Detailed Overview:

Discovered by researcher Lucio Sà, this vulnerability highlights a critical oversight in the plugin's security mechanisms. By failing to properly check user capabilities within the relational_posts_search() function, the plugin inadvertently exposed password-protected and private posts to unauthorized users. This breach not only posed a risk to data confidentiality but also emphasized the need for rigorous security practices in plugin development.

Advice for Users:

Immediate Action: Users of the Smart Custom Fields plugin should immediately upgrade to version 5.0.0 to mitigate the risk posed by CVE-2024-1995.
Check for Signs of Vulnerability: Site administrators are advised to review access logs for unusual activity that might indicate exploitation of this vulnerability and to audit the visibility settings of sensitive content.
Alternate Plugins: While the vulnerability has been patched, users may consider evaluating other custom field plugins as alternatives to ensure a diverse and secure plugin ecosystem on their sites.
Stay Updated: Maintaining the latest versions of all WordPress plugins is crucial for site security. Users should regularly check for updates and apply them promptly to protect against known vulnerabilities.

Conclusion:

The swift resolution of CVE-2024-1995 in the Smart Custom Fields plugin serves as a vital reminder of the ongoing challenges in maintaining web security. For WordPress site owners, particularly those managing sensitive content, staying vigilant and proactive in updating plugins is essential for safeguarding their digital assets. As the digital landscape continues to evolve, the commitment to security by both developers and users remains paramount in ensuring the integrity and trustworthiness of online platforms.

References:

Detailed Report:

In the dynamic world of WordPress, where plugins like Smart Custom Fields empower users to tailor their digital spaces with custom functionality, the recent discovery of CVE-2024-1995 serves as a critical wake-up call. This vulnerability within the Smart Custom Fields plugin, a tool cherished for its ability to add nuanced detail to WordPress sites, revealed a significant security gap that could potentially expose sensitive content to unauthorized eyes. The revelation of such a flaw not only underscores the inherent risks in digital customization but also highlights the paramount importance of vigilance and timely updates in safeguarding one's digital presence.

Smart Custom Fields: Enhancing WordPress Functionality

Smart Custom Fields, developed by inc2734, stands out for its robust capability to extend WordPress sites with customizable fields, allowing for a tailored user experience. With over 224,550 downloads and 50,000 active installations, its impact on the WordPress community is undeniable. However, the trust placed in this plugin was tested with the discovery of a vulnerability in versions up to and including 4.2.2, prompting an immediate response from the development team.

CVE-2024-1995: A Closer Look

The vulnerability, identified as CVE-2024-1995, stemmed from a missing capability check within the relational_posts_search() function, leading to unauthorized post content disclosure. This flaw meant that individuals with as little as subscriber-level access could potentially view content meant to be private or password-protected, breaching the privacy and security of WordPress sites utilizing the plugin. Unearthed by researcher Lucio Sà, this issue was promptly made public on March 19, 2024, signaling the need for immediate corrective action.

Risks and Implications

The implications of CVE-2024-1995 extend beyond simple unauthorized access; they encompass potential data breaches, undermining of user trust, and the jeopardization of site integrity. For small business owners, whose digital presence is often a primary touchpoint with customers, such vulnerabilities can translate to tangible business risks, including reputational damage and loss of customer confidence.

Remediation and Proactive Defense

In response to the discovery of CVE-2024-1995, a patched version of the plugin, 5.0.0, was swiftly released, addressing the vulnerability and restoring security. Site owners are urged to update their Smart Custom Fields plugin to this latest version to protect their sites from potential exploitation. Moreover, regular monitoring of plugin updates, vigilant management of user permissions, and a proactive stance on website security are instrumental in defending against such vulnerabilities.

Navigating Past Vulnerabilities

CVE-2024-1995 is not the first challenge faced by the Smart Custom Fields plugin, with previous vulnerabilities also having been addressed by the developers. These instances serve as a reminder of the ongoing battle against digital threats and the necessity for continuous improvement in security practices.

The Critical Nature of Security Awareness

For small business owners juggling myriad responsibilities, the task of staying abreast of every security update may seem daunting. Yet, in an era where digital footprints are increasingly synonymous with business identities, the importance of maintaining a secure website cannot be overstated. The incident involving CVE-2024-1995 in the Smart Custom Fields plugin reinforces the crucial need for regular updates, diligent security practices, and an informed approach to plugin management. By prioritizing these practices, small business owners can not only protect their digital assets but also fortify the trust and confidence of their clientele in an ever-evolving digital landscape.

Staying Secure

Staying on top of WordPress security can feel overwhelming for small business owners without dedicated IT staff. At Your WP Guy, we exist to shoulder that burden for you. Our WordPress experts can fully audit, secure, maintain and support your site - so you can focus on growing your business with peace of mind.

Don't tackle security risks alone. Let us help you assess any impact from this vulnerability, update your plugins, and implement ongoing maintenance to avoid future threats. We treat your website like it's our own - because we know how critical it is for reaching your customers.

Get in touch for a free consultation today on making WordPress security stress-free. Call 678-995-5169 or book a call here. Our knowledgeable team is ready to help you safeguard your online presence.

Smart Custom Fields Vulnerability – Missing Authorization to Authenticated (Subscriber+) Post Content Disclosure – CVE-2024-1995 | WordPress Plugin Vulnerability Report FAQs

What is CVE-2024-1995?

CVE-2024-1995 is a designated code for a specific security vulnerability identified in the Smart Custom Fields plugin for WordPress. This vulnerability was found in versions up to and including 4.2.2 and allowed authenticated users with subscriber-level access or higher to view content from password-protected and private posts, which should not be accessible without proper permissions.

The issue was due to a missing capability check in the relational_posts_search() function of the plugin. Addressing this vulnerability was crucial to prevent unauthorized content disclosure and maintain the integrity and privacy of WordPress sites using Smart Custom Fields.

How can I tell if my WordPress site is affected by this vulnerability?

Your WordPress site might be affected by CVE-2024-1995 if you have the Smart Custom Fields plugin installed and it's version 4.2.2 or older. You can check the version of the plugin by going to the Plugins section of your WordPress dashboard and locating Smart Custom Fields in the list.

If your plugin version matches or precedes 4.2.2, it's important to update it immediately to the patched version to secure your site from potential exploitation of this vulnerability.

What are the potential risks of CVE-2024-1995?

The CVE-2024-1995 vulnerability in the Smart Custom Fields plugin poses several risks, including unauthorized disclosure of sensitive content. Attackers could exploit this flaw to access password-protected and private posts, leading to potential privacy breaches and data leaks.

Such unauthorized access could harm your website's reputation, erode user trust, and potentially lead to regulatory or legal issues, especially if sensitive or personal data is exposed.

How do I update the Smart Custom Fields plugin to address this vulnerability?

To address CVE-2024-1995, you should update the Smart Custom Fields plugin to version 5.0.0 or later, which contains the necessary security fix. In your WordPress dashboard, go to the Plugins section, find Smart Custom Fields, and you should see an option to update the plugin if your version is out of date.

Before updating, it's always a good idea to back up your WordPress site to avoid any data loss or unintended consequences that might arise during the update process.

Are there any alternative plugins to Smart Custom Fields that I could use?

While Smart Custom Fields is a popular choice for adding custom fields to WordPress sites, there are alternatives available, such as Advanced Custom Fields (ACF) and Custom Field Suite. These plugins offer similar functionality for managing custom fields and meta data within WordPress.

When considering alternatives, it's important to assess their features, ease of use, compatibility with your current WordPress theme and other plugins, and their security track record to ensure they meet your needs and maintain the security of your site.

What steps can I take to improve my WordPress site's security?

Improving your WordPress site's security involves regularly updating the WordPress core, themes, and plugins to their latest versions to patch known vulnerabilities. Additionally, using strong, unique passwords for all user accounts, implementing two-factor authentication, and limiting login attempts can help protect against unauthorized access.

Using a security plugin that offers features like firewall protection, malware scanning, and regular security audits can further enhance your site's security and help prevent potential breaches.

How often should WordPress plugins be updated?

WordPress plugins should be updated as soon as new updates are available, especially if they include security patches. Developers frequently release updates to address vulnerabilities, add new features, or improve compatibility, so keeping your plugins up to date is essential for maintaining a secure and functional website.

It's a good practice to check for updates regularly, at least once a week, and ensure that automatic updates are enabled for critical security patches.

Can a plugin vulnerability affect my entire WordPress site?

Yes, a vulnerability in a single WordPress plugin can potentially affect your entire site. Exploits can lead to unauthorized access, data breaches, insertion of malicious code, and other security issues that compromise not just the plugin but also the wider site functionality and security.

This is why it's critical to maintain a proactive approach to security, regularly updating all site components and implementing comprehensive security measures to protect your site.

What should I do if I suspect my site has been compromised due to CVE-2024-1995?

If you suspect your site has been compromised due to CVE-2024-1995 or any other vulnerability, immediately update the affected plugin to the patched version. Additionally, review your site for any unauthorized changes, particularly in the visibility settings of sensitive content, and check user activity logs for signs of exploitation.

Consulting with a cybersecurity professional or service can provide a thorough investigation and remediation if a breach is confirmed. Implementing additional security measures, such as changing passwords and scanning for malware, may also be necessary to secure your site.

Where can I find more information about WordPress plugin vulnerabilities and security updates?

To stay informed about WordPress plugin vulnerabilities and security updates, regularly visit the official WordPress Plugin Directory, where updates and security notices are frequently posted. Additionally, security blogs and websites like Wordfence, Sucuri, and the WPScan Vulnerability Database offer timely information on discovered vulnerabilities, security patches, and best practices for WordPress security.

Subscribing to security newsletters from these reputable sources and participating in WordPress forums and communities can also provide insights and alerts about emerging threats, helping you keep your WordPress site secure.

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Posted in Security, Vulnerabilities and tagged content disclosure, CVE-2024-1995, data privacy, Patch Update, Plugin Vulnerability, Security Best Practices, Smart Custom Fields, Website Protection, WordPress plugin update, wordpress security