EUVD-2025-9694

Comprehensive Technical Analysis of EUVD-2025-9694

1. Vulnerability Assessment and Severity Evaluation

The vulnerability in the tagDiv Composer plugin for WordPress, identified as EUVD-2025-9694 (CVE-2024-13645), involves PHP Object Instantiation via the module parameter. This vulnerability allows unauthenticated attackers to instantiate a PHP object, which can be exploited if a Property-Oriented Programming (POP) chain is present in another installed plugin or theme.

Severity Evaluation:

• Base Score: 9.8 (CVSS:3.1)
• Vector String: 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 following factors:

• Attack Vector (AV): Network (N)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): None (N)
• User Interaction (UI): None (N)
• Scope (S): Unchanged (U)
• Confidentiality (C): High (H)
• Integrity (I): High (H)
• Availability (A): High (H)

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Access: Attackers can exploit this vulnerability without needing to authenticate.
• Network Access: The attack can be conducted over the network, making it accessible to remote attackers.

Exploitation Methods:

• PHP Object Instantiation: Attackers can instantiate PHP objects by manipulating the module parameter.
• POP Chain Exploitation: If another plugin or theme with a POP chain is installed, attackers can leverage this to perform actions such as deleting arbitrary files, retrieving sensitive data, or executing arbitrary code.

3. Affected Systems and Software Versions

Affected Software:

• tagDiv Composer Plugin for WordPress
• Versions: All versions up to and including 5.3

Affected Systems:

• WordPress Sites: Any WordPress installation using the tagDiv Composer plugin version 5.3 or earlier.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Upgrade to a version higher than 5.3 if available.
• Disable the Plugin: If an update is not available, consider disabling the plugin until a patch is released.
• Monitor for Suspicious Activity: Implement monitoring to detect any unusual activity related to PHP object instantiation.

Long-Term Strategies:

• Regular Updates: Ensure all plugins and themes are regularly updated.
• Security Audits: Conduct regular security audits of all installed plugins and themes.
• Use Security Plugins: Implement security plugins like Wordfence to detect and mitigate vulnerabilities.

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 tagDiv Composer plugin. The potential for unauthenticated remote code execution and data breaches can lead to severe consequences, including:

• Data Breaches: Sensitive information can be compromised.
• Service Disruption: Websites can be taken offline or defaced.
• Reputation Damage: Organizations may suffer reputational damage due to security incidents.

6. Technical Details for Security Professionals

Vulnerability Details:

• Vulnerable Parameter: The module parameter in the tagDiv Composer plugin is susceptible to PHP Object Instantiation.
• Exploitation Conditions: The vulnerability can only be fully exploited if a POP chain is present in another installed plugin or theme.

Detection and Response:

• Log Analysis: Monitor server logs for unusual PHP object instantiation attempts.
• Intrusion Detection Systems (IDS): Implement IDS to detect and alert on suspicious activities related to this vulnerability.
• Patch Management: Ensure a robust patch management process to quickly apply updates when available.

References:

• NVD Entry: CVE-2024-13645
• Wordfence Threat Intel: Vulnerability Details
• Plugin Documentation: tagDiv Composer Page Builder Basics

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risks associated with EUVD-2025-9694 and enhance their overall cybersecurity posture.