EUVD-2025-205805

Comprehensive Technical Analysis of EUVD-2025-205805

1. Vulnerability Assessment and Severity Evaluation

The EUVD entry EUVD-2025-205805 describes a Cross-Site Request Forgery (CSRF) vulnerability in the ConoHa by GMO WING WordPress Migrator plugin. This vulnerability allows an attacker to upload a web shell to a web server, which can lead to complete control over the affected system. The CVSS (Common Vulnerability Scoring System) base score of 9.6 indicates a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H breaks down as follows:

• 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 privileges are required to exploit the vulnerability.
• UI:R (User Interaction Required): The attack requires some form of user interaction.
• S:C (Changed Scope): The vulnerability can affect resources beyond the security scope managed by the security authority.
• C:H (High Confidentiality Impact): There is a high impact on the confidentiality of the system.
• I:H (High Integrity Impact): There is a high impact on the integrity of the system.
• A:H (High Availability Impact): There is a high impact on the availability of the system.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector for this CSRF vulnerability involves tricking an authenticated user into performing an action on the web server. The attacker can craft a malicious link or form that, when clicked or submitted by the user, uploads a web shell to the server. Once the web shell is uploaded, the attacker can execute arbitrary commands on the server, leading to:

• Data Exfiltration: Stealing sensitive information.
• System Compromise: Gaining full control over the server.
• Persistent Access: Maintaining long-term access to the compromised system.

3. Affected Systems and Software Versions

The vulnerability affects the WING WordPress Migrator plugin versions from n/a through 1.1.9. Any WordPress site using this plugin within the specified version range is at risk.

4. Recommended Mitigation Strategies

To mitigate this vulnerability, the following steps should be taken:

• Update the Plugin: Ensure that the WING WordPress Migrator plugin is updated to a version that addresses this vulnerability.
• Implement CSRF Protection: Use anti-CSRF tokens to validate requests and prevent unauthorized actions.
• User Education: Educate users about the risks of clicking on unknown links or submitting forms from untrusted sources.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and address potential security issues.
• Web Application Firewalls (WAF): Deploy WAFs to monitor and block suspicious activities.

5. Impact on European Cybersecurity Landscape

The impact of this vulnerability on the European cybersecurity landscape is significant due to the widespread use of WordPress and its plugins. Organizations and individuals relying on the WING WordPress Migrator plugin are at risk of severe data breaches and system compromises. This underscores the importance of timely patch management and proactive security measures to protect against such vulnerabilities.

6. Technical Details for Security Professionals

Detection:

• Log Analysis: Monitor server logs for unusual upload activities or unauthorized access attempts.
• Intrusion Detection Systems (IDS): Implement IDS to detect and alert on suspicious network activities.

Response:

• Incident Response Plan: Have a well-defined incident response plan to quickly address and mitigate any detected vulnerabilities.
• Patch Management: Ensure a robust patch management process to apply updates promptly.

Prevention:

• Security Hardening: Implement security hardening measures for WordPress installations, including disabling unused plugins and themes.
• Regular Updates: Keep all software, including WordPress core, plugins, and themes, up to date.

References:

• Patchstack Vulnerability Database: Patchstack VDP
• NIST National Vulnerability Database: NVD

By following these recommendations and staying vigilant, organizations can significantly reduce the risk posed by this CSRF vulnerability.