EUVD-2025-35804

Comprehensive Technical Analysis of EUVD-2025-35804

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in the WooCommerce Designer Pro plugin for WordPress, specifically in the 'wcdp_save_canvas_design_ajax' function, allows for arbitrary file uploads due to missing file type validation. This vulnerability is critical as it enables unauthenticated attackers to upload arbitrary files to the server, potentially leading to remote code execution (RCE).

Severity Evaluation:

• Base Score: 9.8 (Critical)
• Base Score Version: CVSS:3.1
• Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The high base score indicates the severity of the vulnerability, which can be exploited remotely without authentication, leading to high confidentiality, integrity, and availability impacts.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Arbitrary File Upload: Attackers can exploit the vulnerability by sending specially crafted HTTP requests to the 'wcdp_save_canvas_design_ajax' function, bypassing file type validation and uploading malicious files.
• Remote Code Execution (RCE): Once arbitrary files are uploaded, attackers can execute malicious code on the server, leading to complete system compromise.

Exploitation Methods:

• File Upload Exploit: Attackers can upload PHP files or other executable scripts that can be executed on the server.
• Web Shell Upload: Uploading a web shell can provide attackers with persistent access to the server, allowing them to execute commands and control the system remotely.

3. Affected Systems and Software Versions

Affected Software:

• WooCommerce Designer Pro Plugin: All versions up to and including 1.9.26.
• Pricom - Printing Company & Design Services WordPress Theme: This theme uses the vulnerable plugin and is therefore affected.

Affected Systems:

• WordPress Websites: Any WordPress site using the WooCommerce Designer Pro plugin version 1.9.26 or earlier is vulnerable.
• Servers Hosting Affected Websites: Servers running these WordPress installations are at risk of being compromised.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update Plugin: Immediately update the WooCommerce Designer Pro plugin to a version higher than 1.9.26 if available.
• Disable Plugin: If an update is not available, disable the plugin until a patched version is released.
• Implement Web Application Firewall (WAF): Use a WAF to block suspicious file upload attempts and protect against known vulnerabilities.

Long-Term Mitigation:

• Regular Security Audits: Conduct regular security audits and vulnerability assessments of all plugins and themes.
• Patch Management: Ensure timely patching and updating of all WordPress components.
• User Education: Educate users on the risks of using outdated or unsupported plugins and themes.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for e-commerce websites and businesses relying on WordPress and WooCommerce. The potential for RCE can lead to data breaches, financial loss, and reputational damage. Given the widespread use of WordPress and WooCommerce in Europe, this vulnerability could affect a large number of businesses and individuals.

6. Technical Details for Security Professionals

Vulnerability Details:

• Function Affected: 'wcdp_save_canvas_design_ajax'
• Issue: Missing file type validation allows arbitrary file uploads.
• Exploitability: Unauthenticated attackers can exploit this vulnerability remotely.

Detection and Response:

• Log Analysis: Monitor server logs for suspicious file upload activities and unauthorized access attempts.
• Intrusion Detection Systems (IDS): Implement IDS to detect and alert on unusual file upload patterns.
• Incident Response Plan: Develop and maintain an incident response plan to quickly address and mitigate any potential breaches.

References:

• Wordfence Threat Intelligence: Wordfence Vulnerability Report
• Codecanyon Plugin Page: WooCommerce Designer Pro
• NVD Entry: CVE-2025-6440

Aliases:

• CVE-2025-6440

Assigner:

• Wordfence

ENISA IDs:

• Product: WooCommerce Designer Pro (versions ≤1.9.26)
• Vendor: JMA Plugins

By addressing this vulnerability promptly and effectively, organizations can significantly reduce the risk of cyber attacks and ensure the security of their WordPress-based e-commerce platforms.