EUVD-2025-21415

Comprehensive Technical Analysis of EUVD-2025-21415

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in the HT Contact Form Widget For Elementor Page Builder & Gutenberg Blocks & Form Builder. plugin for WordPress allows for arbitrary file deletion due to insufficient file path validation in the temp_file_delete() function. This vulnerability affects all versions up to and including 2.2.1. The severity of this vulnerability is rated with a CVSS Base Score of 9.1, indicating a critical risk.

CVSS Vector Breakdown:

• AV:N (Network Vector): The vulnerability is exploitable over the network.
• AC:L (Low Complexity): The attack requires low skill or resources.
• PR:N (No Privileges Required): No authentication is needed to exploit the vulnerability.
• UI:N (No User Interaction): No user interaction is required.
• S:U (Unchanged Scope): The vulnerability does not change the security scope.
• C:N (No Confidentiality Impact): There is no direct impact on confidentiality.
• I:H (High Integrity Impact): The integrity of the system is highly impacted.
• A:H (High Availability Impact): The availability of the system is highly impacted.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Access: An attacker can exploit this vulnerability without needing any credentials.
• Network Access: The attack can be carried out remotely over the network.

Exploitation Methods:

• Arbitrary File Deletion: By manipulating the file path input to the temp_file_delete() function, an attacker can delete any file on the server.
• Remote Code Execution: Deleting critical files such as wp-config.php can lead to remote code execution by disrupting the normal operation of the WordPress installation.

3. Affected Systems and Software Versions

Affected Software:

• HT Contact Form Widget For Elementor Page Builder & Gutenberg Blocks & Form Builder. plugin for WordPress.

Affected Versions:

• All versions up to and including 2.2.1.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Ensure that the plugin is updated to a version higher than 2.2.1, where the vulnerability has been patched.
• Disable the Plugin: If an update is not immediately available, consider disabling the plugin until a secure version is released.

Long-Term Mitigations:

• Regular Patch Management: Implement a robust patch management process to ensure all plugins and software are kept up to date.
• Input Validation: Ensure that all input validation mechanisms are thoroughly reviewed and strengthened.
• Access Controls: Implement strict access controls and authentication mechanisms to limit unauthorized access.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations and individuals using the affected WordPress plugin. Given the widespread use of WordPress and its plugins, the potential for widespread exploitation is high. This underscores the importance of timely vulnerability disclosure, patching, and proactive security measures.

6. Technical Details for Security Professionals

Vulnerable Function:

• temp_file_delete() in FileManager.php

Code Reference:

• The vulnerability is located in the FileManager.php file at line 107.
• The changeset reference for the fix can be found in Ajax.php.

Exploitation Steps:

1. Identify the vulnerable endpoint that calls the temp_file_delete() function.
2. Craft a malicious request with a manipulated file path to target critical files.
3. Send the request to the server to delete the targeted file.

Detection and Monitoring:

• Log Analysis: Monitor server logs for unusual file deletion activities.
• Intrusion Detection Systems (IDS): Implement IDS to detect and alert on suspicious file deletion attempts.
• File Integrity Monitoring: Use file integrity monitoring tools to detect unauthorized changes to critical files.

References:

• Wordfence Threat Intelligence
• WordPress Plugin Repository
• Changeset Reference

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risk of exploitation and protect their digital assets.