EUVD-2025-4826

Comprehensive Technical Analysis of EUVD-2025-4826

1. Vulnerability Assessment and Severity Evaluation

The vulnerability in the Keap Official Opt-in Forms plugin for WordPress, identified as EUVD-2025-4826 (CVE-2024-13725), is classified as a Local File Inclusion (LFI) vulnerability. This type of vulnerability allows unauthenticated attackers to include and execute PHP files on the server, potentially leading to Remote Code Execution (RCE) under certain conditions.

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 a critical vulnerability due to the ease of exploitation (low complexity, no authentication required, no user interaction needed) and the severe impact on confidentiality, integrity, and availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Local File Inclusion (LFI): Attackers can manipulate the service parameter to include arbitrary PHP files on the server.
2. Remote Code Execution (RCE): If register_argc_argv is enabled and pearcmd.php is installed, attackers can achieve RCE by including and executing malicious PHP code.

Exploitation Methods:

• Unauthenticated Access: Attackers can exploit the vulnerability without needing to authenticate.
• Parameter Manipulation: By manipulating the service parameter, attackers can include and execute PHP files.
• Code Execution: If the server configuration allows, attackers can upload and execute malicious PHP code.

3. Affected Systems and Software Versions

Affected Software:

• Keap Official Opt-in Forms plugin for WordPress
• Versions: All versions up to and including 2.0.1

Affected Systems:

• WordPress installations using the vulnerable plugin versions.
• Servers with register_argc_argv enabled and pearcmd.php installed are at higher risk of RCE.

4. Recommended Mitigation Strategies

Immediate Actions:

1. Update the Plugin: Upgrade to a patched version of the Keap Official Opt-in Forms plugin (if available).
2. Disable register_argc_argv: Ensure that register_argc_argv is disabled in the PHP configuration.
3. Remove pearcmd.php: If not needed, remove pearcmd.php from the server.
4. Implement Web Application Firewalls (WAF): Use WAFs to block suspicious requests and parameter manipulations.
5. Regular Security Audits: Conduct regular security audits and vulnerability assessments.

Long-Term Strategies:

1. Patch Management: Establish a robust patch management process to ensure timely updates.
2. Security Training: Educate developers and administrators on secure coding practices and server configurations.
3. Intrusion Detection Systems (IDS): Deploy IDS to monitor and detect unusual activities.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European organizations using WordPress with the affected plugin. Given the widespread use of WordPress, the potential for data breaches, unauthorized access, and service disruptions is high. This underscores the need for vigilant cybersecurity practices and timely response mechanisms within the European cybersecurity community.

6. Technical Details for Security Professionals

Vulnerability Details:

• Vulnerable Parameter: service
• Exploitation Path: Attackers can manipulate the service parameter to include PHP files, leading to code execution if certain conditions are met.

Detection and Response:

1. Log Analysis: Monitor server logs for unusual file inclusion attempts.
2. File Integrity Monitoring: Use file integrity monitoring tools to detect unauthorized file changes.
3. Incident Response Plan: Develop and implement an incident response plan to quickly address and mitigate any detected exploitation attempts.

References:

• NVD Entry
• WordPress Plugin Repository
• Wordfence Threat Intelligence

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