Smart Slider 3 Vulnerability – Missing Authorization to Limited File Upload – CVE-2024-3027 | WordPress Plugin Vulnerability Report

Plugin Name: Smart Slider 3

Key Information:

  • Software Type: Plugin
  • Software Slug: smart-slider-3
  • Software Status: Active
  • Software Author: nextendweb
  • Software Downloads: 17,368,541
  • Active Installs: 900,000
  • Last Updated: April 25, 2024
  • Patched Versions: 3.5.1.23
  • Affected Versions: <= 3.5.1.22

Vulnerability Details:

  • Name: Smart Slider 3 <= 3.5.1.22
  • Title: Missing Authorization to Limited File Upload
  • Type: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
  • CVE: CVE-2024-3027
  • CVSS Score: 6.4
  • Publicly Published: April 12, 2024
  • Researcher: Christiaan Swiers
  • Description: The Smart Slider 3 plugin for WordPress contains a significant security flaw due to a missing capability check in its file upload function. This vulnerability allows authenticated users, particularly those with contributor-level access, to upload potentially malicious files, including SVG files that may contain harmful scripts. This loophole can lead to stored cross-site scripting (XSS) attacks impacting the site’s integrity.

Summary:

Smart Slider 3 for WordPress has exhibited a vulnerability in versions up to and including 3.5.1.22, which enabled authenticated users with contributor-level permissions to upload unauthorized files. This security gap has been closed with the release of patch 3.5.1.23.

Detailed Overview:

This vulnerability was publicly disclosed by researcher Christiaan Swiers on April 12, 2024. The core of the issue involved insufficient security controls within the plugin's upload functionality, which did not adequately verify user permissions, allowing lower-level users to execute actions typically reserved for higher-level administrators. This security oversight made it possible for attackers to upload files that could execute arbitrary code on the site, posing risks of data theft, site defacement, or worse. The update in version 3.5.1.23 addresses this vulnerability by implementing proper authorization checks to prevent unauthorized file uploads.

Advice for Users:

  • Immediate Action: It is critical for users to update their installation of Smart Slider 3 to the latest version, 3.5.1.23, to protect their websites from potential exploitation.
  • Check for Signs of Vulnerability: Website administrators should review their site logs and check for any unauthorized file uploads or unusual activities that may have occurred prior to updating the plugin.
  • Alternate Plugins: While the current issue has been resolved, users seeking additional features or concerned about future vulnerabilities may consider exploring other well-reviewed and frequently updated slider plugins as alternatives.
  • Stay Updated: Always keeping your WordPress plugins updated to the latest versions is one of the most effective practices to secure your website against known vulnerabilities and cyber threats.

Conclusion:

The rapid response by the developers of Smart Slider 3 in addressing this vulnerability underscores the importance of timely updates in the maintenance of website security. This incident serves as a reminder to all WordPress users of the critical nature of applying updates as soon as they become available, ensuring that their site remains secure against potential threats.

References:

Detailed Report: 

In the digital realm, where websites serve as pivotal hubs for business operations and user interaction, maintaining robust security measures is not just a recommendation; it's a necessity. The recent discovery of a security vulnerability in the Smart Slider 3 WordPress plugin—a tool integral to enhancing user experience on nearly a million websites—casts a spotlight on the critical importance of keeping digital assets up-to-date. CVE-2024-3027, a flaw arising from inadequate permission checks that allowed low-level users to upload files potentially laden with malicious scripts, illustrates a stark reality: outdated software is a gateway for cyber threats.

Summary:

The Smart Slider 3 for WordPress has exhibited a vulnerability in versions up to and including 3.5.1.22, which enabled authenticated users with contributor-level permissions to upload unauthorized files. This security gap has been closed with the release of patch 3.5.1.23.

Detailed Overview:

Publicly disclosed by researcher Christiaan Swiers on April 12, 2024, the vulnerability stemmed from insufficient security controls within the plugin's upload functionality, allowing lower-level users to execute actions typically reserved for higher-level administrators. The exposure risk primarily impacts sites with multi-site setups or those that have specifically disabled unfiltered HTML, making the potential for malicious script execution a serious security concern. The update in version 3.5.1.23 addresses this vulnerability by implementing proper authorization checks to prevent unauthorized file uploads.

Conclusion:

The rapid response by the developers of Smart Slider 3 in addressing this vulnerability underscores the importance of timely updates in maintaining website security. For small business owners, this incident serves as a crucial reminder of the need to stay vigilant and proactive in managing software updates, ensuring that their digital presence remains secure against evolving cyber threats.

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.

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Smart Slider 3 Vulnerability – Missing Authorization to Limited File Upload – CVE-2024-3027 | WordPress Plugin Vulnerability Report FAQs

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