CVE-2022-38468 in NextGEN Gallery Plugin
Summary
by MITRE • 03/01/2023
Cross-Site Request Forgery (CSRF) vulnerability in Imagely WordPress Gallery Plugin – NextGEN Gallery plugin <= 3.28 leading to thumbnail alteration.
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Analysis
by VulDB Data Team • 03/01/2023
The CVE-2022-38468 vulnerability represents a critical cross-site request forgery flaw within the NextGEN Gallery WordPress plugin, specifically affecting versions up to and including 3.28. This vulnerability resides in the plugin's handling of thumbnail modification requests, creating a dangerous attack vector that allows unauthorized users to manipulate gallery assets without proper authentication. The issue stems from insufficient validation of request origins and lack of proper anti-CSRF token implementation within the plugin's administrative interfaces. Attackers can exploit this weakness by crafting malicious requests that appear to originate from legitimate admin sessions, enabling them to alter thumbnail images within the gallery system. The vulnerability directly impacts the integrity and security of media content managed through the plugin, potentially allowing attackers to replace legitimate thumbnails with malicious content or manipulate the visual presentation of gallery displays.
The technical exploitation of this CSRF vulnerability occurs through the manipulation of HTTP requests that modify thumbnail settings within the NextGEN Gallery plugin. When administrators interact with the plugin's thumbnail management features, the system fails to properly validate that requests originate from authenticated users with appropriate privileges. This allows attackers to construct specially crafted requests that, when executed by an authenticated administrator, modify thumbnail properties or replace thumbnail images with malicious alternatives. The vulnerability specifically affects the plugin's administrative AJAX endpoints that handle thumbnail alteration operations, where proper CSRF protection mechanisms are either absent or inadequately implemented. The flaw demonstrates poor input validation practices and inadequate session management, creating opportunities for attackers to perform unauthorized actions within the context of authenticated user sessions.
The operational impact of CVE-2022-38468 extends beyond simple thumbnail modification, as it represents a significant security risk to WordPress installations utilizing the NextGEN Gallery plugin. Attackers could leverage this vulnerability to deface websites by replacing gallery thumbnails with malicious content, potentially leading to phishing attacks or malware distribution. The vulnerability also compromises the trustworthiness of gallery content, as users may encounter altered images that could mislead them about the actual content or authenticity of displayed media. Additionally, the flaw could be combined with other vulnerabilities to escalate attacks, potentially leading to complete compromise of affected WordPress installations. The impact is particularly severe in environments where gallery administrators have elevated privileges or where the plugin is used to display sensitive content that could be modified through this attack vector.
Organizations affected by this vulnerability should immediately implement multiple layers of mitigation strategies to protect their WordPress installations. The primary recommendation involves updating to the latest version of the NextGEN Gallery plugin where the CSRF vulnerability has been patched and properly addressed. System administrators should also implement additional security measures such as enabling strong CSRF protection mechanisms, reviewing and tightening user permissions, and monitoring administrative access logs for suspicious activities. Network-level protections including web application firewalls and intrusion detection systems can help identify and block malicious requests attempting to exploit this vulnerability. The implementation of Content Security Policies and proper session management practices further strengthens defenses against similar CSRF attacks. Security teams should conduct comprehensive vulnerability assessments to identify other potential CSRF vulnerabilities within their WordPress installations and ensure that all plugins and themes follow secure coding practices aligned with industry standards such as those outlined in the CWE-352 category for Cross-Site Request Forgery vulnerabilities.