CVE-2024-0757 in Insert or Embed Articulate Content Plugin
Summary
by MITRE • 06/04/2024
The Insert or Embed Articulate Content into WordPress plugin through 4.3000000023 is not properly filtering which file extensions are allowed to be imported on the server, allowing the uploading of malicious code within zip files
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Analysis
by VulDB Data Team • 06/04/2024
The vulnerability identified as CVE-2024-0757 affects the Insert or Embed Articulate Content into WordPress plugin version 4.3000000023 and earlier, presenting a critical security flaw that stems from inadequate input validation and file extension filtering mechanisms. This weakness allows malicious actors to bypass security restrictions and upload potentially harmful code within zip archives, creating a significant vector for code execution and system compromise. The plugin's failure to properly validate file extensions during the import process represents a fundamental breakdown in the principle of least privilege and secure file handling practices that are essential for maintaining WordPress site integrity.
The technical flaw manifests in the plugin's improper implementation of file validation logic within its content import functionality. When users attempt to import Articulate content through the WordPress admin interface, the system should rigorously verify file extensions and content types to prevent the execution of potentially malicious files. However, the vulnerability allows attackers to include executable scripts or malicious code within zip archives that contain legitimate Articulate content, exploiting a weakness in the plugin's file extension filtering mechanism. This weakness directly maps to CWE-434, which describes insecure file upload vulnerabilities where applications accept files without proper validation of their content or extension. The flaw essentially creates a sandbox escape condition where attackers can upload files with extensions that should be restricted, such as .php, .asp, or other executable formats, within what appears to be a legitimate content import process.
The operational impact of this vulnerability is severe and multifaceted, particularly for WordPress environments that rely on the affected plugin for content management. Successful exploitation could enable attackers to execute arbitrary code on the target server, potentially leading to complete system compromise, data exfiltration, or the establishment of persistent backdoors. The vulnerability affects not only the immediate WordPress installation but also creates potential lateral movement opportunities within network environments where WordPress sites are deployed. Attackers could leverage this weakness to deploy web shells, modify existing content, or establish command and control channels, making this vulnerability particularly dangerous in multi-site or enterprise environments. The attack surface is further expanded due to the plugin's widespread adoption and the fact that many WordPress administrators may not be aware of the specific vulnerability or its implications for their site security.
Mitigation strategies for CVE-2024-0757 should focus on immediate remediation through plugin updates to versions that properly implement file extension filtering and content validation. Organizations should also implement additional defensive measures including restricting file upload capabilities at the web server level, implementing proper file type validation at multiple layers, and conducting regular security audits of WordPress plugins and themes. Network-based protections such as web application firewalls can help detect and block malicious file upload attempts, while monitoring for unusual file creation patterns can help identify exploitation attempts. Security practitioners should also consider implementing principle of least privilege access controls for WordPress administrators and regularly review file permissions to ensure that only necessary users can perform content import operations. The vulnerability highlights the importance of following security best practices such as those outlined in the OWASP Top Ten and NIST Cybersecurity Framework, particularly in the areas of input validation and secure coding practices. Additionally, implementing the ATT&CK framework's concept of "Execution: Command and Script Injection" and "Persistence: Web Shell" can help security teams understand the potential attack paths and implement appropriate detection and prevention measures. Regular vulnerability assessments and penetration testing should be conducted to identify similar weaknesses in other plugins or custom code implementations within WordPress environments.