CVE-2022-1541 in Video Slider Plugin
Summary
by MITRE • 06/08/2022
The Video Slider WordPress plugin before 1.4.8 does not sanitize or escape some of its video settings, which could allow high-privileged users to perform Cross-Site Scripting attacks even when unfiltered_html is disallowed
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Analysis
by VulDB Data Team • 06/11/2022
The vulnerability identified as CVE-2022-1541 affects the Video Slider WordPress plugin version 1.4.7 and earlier, representing a critical cross-site scripting weakness that undermines the security posture of WordPress installations. This flaw resides in the plugin's handling of video settings where insufficient sanitization and escaping mechanisms fail to properly validate user input, creating an avenue for malicious code injection. The vulnerability is particularly concerning because it targets high-privileged users within the WordPress ecosystem, meaning that attackers who have gained administrative or editor-level access can exploit this weakness to execute malicious scripts against other users who interact with the affected plugin's interface. The security implications extend beyond simple XSS attacks as this vulnerability specifically targets scenarios where unfiltered_html is disabled, which is a standard security practice designed to prevent arbitrary HTML injection in WordPress environments. When unfiltered_html is properly restricted, it serves as a crucial defense mechanism against various injection attacks, yet this vulnerability demonstrates how poorly implemented input handling can circumvent such protections.
The technical flaw manifests in the plugin's failure to properly sanitize video-related settings before storing or rendering them within the WordPress admin interface. This inadequate input validation allows malicious payloads to be stored in the plugin's configuration parameters and subsequently executed when other users view or interact with the video slider interface. The vulnerability operates at the application layer and can be classified under CWE-79 as "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", which represents one of the most prevalent and dangerous web application security flaws. The attack vector requires an authenticated user with sufficient privileges to modify plugin settings, making it a privilege escalation vulnerability that can be leveraged to compromise entire WordPress installations when combined with other exploitation techniques. This weakness directly violates the principle of least privilege and proper input validation that forms the foundation of secure web application development practices.
The operational impact of CVE-2022-1541 extends beyond immediate script execution as it can enable attackers to perform a wide range of malicious activities including credential theft, session hijacking, and data exfiltration. When exploited, this vulnerability allows attackers to inject malicious JavaScript code that can persistently target other users who access the affected WordPress admin interface, creating a potential attack surface that could compromise multiple users within the same organization. The vulnerability's exploitation becomes more dangerous when considering that WordPress administrators often have broad access to system resources and user data, making the compromise of a single privileged account potentially devastating to overall security posture. This weakness can be categorized under ATT&CK technique T1566 as "Phishing with Social Engineering" and T1059 as "Command and Scripting Interpreter" since it enables attackers to deliver malicious payloads through social engineering tactics and establish persistent command execution capabilities within the target environment.
Organizations should implement immediate mitigation strategies including updating to the patched version 1.4.8 of the Video Slider plugin, which addresses the sanitization issues by implementing proper input validation and output escaping mechanisms. Additionally, administrators should conduct thorough security audits of all installed WordPress plugins to identify similar vulnerabilities, particularly those that handle user-provided configuration data. The recommended approach involves implementing a comprehensive security monitoring system that can detect anomalous plugin behavior and unauthorized configuration changes. Security teams should also consider implementing network-based intrusion detection systems to monitor for suspicious activities that may indicate exploitation attempts, while maintaining regular security updates and patch management procedures to prevent similar vulnerabilities from arising in other components of the WordPress ecosystem. The vulnerability serves as a reminder of the critical importance of proper input sanitization and the need for security-conscious development practices in web application frameworks.