CVE-2024-5084 in Hash Form Plugin
Summary
by MITRE • 05/23/2024
The Hash Form – Drag & Drop Form Builder plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'file_upload_action' function in all versions up to, and including, 1.1.0. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
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Analysis
by VulDB Data Team • 02/27/2025
The Hash Form – Drag & Drop Form Builder plugin for WordPress represents a significant security vulnerability through its failure to properly validate file types during the upload process. This weakness exists within the 'file_upload_action' function where the plugin does not adequately verify the nature of files being uploaded, creating an exploitable condition that affects all versions up to and including 1.1.0. The vulnerability stems from a fundamental lack of input sanitization that allows attackers to bypass normal file validation mechanisms.
This arbitrary file upload vulnerability operates at the core of web application security principles and directly relates to CWE-434 which addresses insecure file upload handling. The flaw enables unauthenticated attackers to inject malicious files into the target system, potentially leading to complete system compromise. When combined with other exploitation techniques, this vulnerability creates a pathway for remote code execution, making it particularly dangerous for WordPress installations that rely on this plugin for form building functionality.
The operational impact of this vulnerability extends beyond simple file corruption or data exposure. Attackers can leverage this weakness to upload web shells, malicious scripts, or other payloads that can establish persistent access to the compromised WordPress environment. This allows for ongoing surveillance, data exfiltration, and further exploitation of the network. The vulnerability affects any WordPress site using the affected plugin version, regardless of hosting environment or additional security measures in place.
Security practitioners should immediately implement mitigation strategies including plugin version updates to address the vulnerability, implementing additional file type restrictions at the web server level, and monitoring for suspicious file uploads. The ATT&CK framework categorizes this vulnerability under T1190 - Exploit Public-Facing Application, highlighting the need for proper input validation and file type restrictions. Organizations should also consider implementing web application firewalls and network monitoring to detect anomalous file upload activities. Regular security audits and vulnerability assessments should include checking for outdated plugins and ensuring all WordPress components remain current with security patches to prevent exploitation of similar vulnerabilities in the future.