EUVD-2024-54466

Comprehensive Technical Analysis of EUVD-2024-54466

1. Vulnerability Assessment and Severity Evaluation

The vulnerability in the Envolve Plugin for WordPress, identified as EUVD-2024-54466 (CVE-2024-11617), allows for arbitrary file uploads due to missing file type validation in the 'zetra_languageUpload' and 'zetra_fontsUpload' functions. This vulnerability is present in all versions up to and including 1.0. The severity of this vulnerability is rated with a CVSS Base Score of 9.8, 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): The vulnerability does not affect other systems.
• C:H (High Confidentiality Impact): Complete loss of system confidentiality.
• I:H (High Integrity Impact): Complete loss of system integrity.
• A:H (High Availability Impact): Complete loss of system availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated File Upload: An attacker can upload arbitrary files, including malicious scripts, without needing to authenticate.
• Remote Code Execution (RCE): By uploading a malicious file, an attacker can execute arbitrary code on the server, leading to full system compromise.

Exploitation Methods:

• Direct File Upload: An attacker can directly upload a malicious file (e.g., a PHP script) through the vulnerable functions.
• Web Shell Deployment: Once a malicious file is uploaded, it can act as a web shell, allowing the attacker to execute commands on the server.
• Data Exfiltration: The attacker can use the uploaded file to exfiltrate sensitive data from the server.

3. Affected Systems and Software Versions

Affected Systems:

• WordPress sites using the Envolve Plugin versions up to and including 1.0.

Software Versions:

• Envolve Plugin versions ≤ 1.0.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update or Remove the Plugin: Immediately update the Envolve Plugin to a version that addresses this vulnerability or remove it if an update is not available.
• Disable File Upload Functions: Temporarily disable the 'zetra_languageUpload' and 'zetra_fontsUpload' functions until a patch is applied.

Long-Term Mitigations:

• Regular Patching: Ensure that all plugins and themes are regularly updated to the latest versions.
• Input Validation: Implement strict input validation and sanitization for file uploads.
• Web Application Firewall (WAF): Deploy a WAF to monitor and block suspicious file upload attempts.
• Security Audits: Conduct regular security audits and vulnerability assessments on all plugins and themes.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations and individuals using WordPress with the Envolve Plugin. The potential for remote code execution can lead to data breaches, unauthorized access, and system compromises, affecting the confidentiality, integrity, and availability of information. This underscores the importance of robust cybersecurity practices and timely patch management.

6. Technical Details for Security Professionals

Vulnerability Details:

• Vulnerable Functions: 'zetra_languageUpload' and 'zetra_fontsUpload'
• Missing Validation: The functions lack proper file type validation, allowing arbitrary file uploads.

Detection and Response:

• Log Analysis: Monitor server logs for unusual file upload activities.
• File Integrity Monitoring: Implement file integrity monitoring to detect unauthorized file changes.
• Incident Response Plan: Develop and maintain an incident response plan to quickly address any detected exploitation attempts.

References:

• Wordfence Threat Intelligence: Wordfence Vulnerability Report
• ThemeForest Product Page: Envolve Consulting Business WordPress Theme

Assigner:

• Wordfence: The vulnerability was assigned by Wordfence, a leading provider of WordPress security solutions.

ENISA IDs:

• Product ID: 9a8da38e-acf4-35ff-8ac6-4d1f67130df2
• Vendor ID: 34107155-b6d0-3d2a-a7e8-971a354d22d5

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