EUVD-2024-25125

Comprehensive Technical Analysis of EUVD-2024-25125

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2024-25125 pertains to an "Unrestricted Upload of File with Dangerous Type" in the Themeisle Multiple Page Generator Plugin – MPG. This vulnerability allows an attacker to upload a web shell to a web server, potentially leading to remote code execution (RCE). The CVSS (Common Vulnerability Scoring System) base score of 9.1 indicates a critical severity level. The scoring vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H breaks down as follows:

• Attack Vector (AV): Network (N) - The vulnerability is exploitable over the network.
• Attack Complexity (AC): Low (L) - The attack requires minimal skill or resources.
• Privileges Required (PR): High (H) - The attacker needs high-level privileges to exploit the vulnerability.
• User Interaction (UI): None (N) - No user interaction is required for the attack to succeed.
• Scope (S): Changed (C) - The vulnerability affects a different security scope.
• Confidentiality (C): High (H) - Complete loss of confidentiality.
• Integrity (I): High (H) - Complete loss of integrity.
• Availability (A): High (H) - Complete loss of availability.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector involves uploading a malicious file, such as a web shell, to the web server. This can be achieved through the plugin's file upload functionality, which does not adequately restrict dangerous file types. Once a web shell is uploaded, an attacker can execute arbitrary commands on the server, leading to:

• Remote Code Execution (RCE): The attacker can run malicious code on the server.
• Data Exfiltration: Sensitive data can be stolen.
• System Compromise: The attacker can gain full control over the server, potentially leading to further attacks within the network.

3. Affected Systems and Software Versions

The vulnerability affects the Themeisle Multiple Page Generator Plugin – MPG versions from n/a through 3.4.0. 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 are recommended:

• Update the Plugin: Ensure that the plugin is updated to a version that addresses this vulnerability. If a patch is available, apply it immediately.
• Restrict File Uploads: Implement strict file upload policies to restrict dangerous file types.
• Monitor and Audit: Regularly monitor file uploads and audit the server for any suspicious activities.
• Access Control: Limit access to the plugin's file upload functionality to trusted users only.
• Web Application Firewall (WAF): Deploy a WAF to detect and block malicious file upload attempts.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations and individuals using the affected plugin. Given the widespread use of WordPress and its plugins, this vulnerability could be exploited to compromise numerous websites, leading to data breaches, financial losses, and reputational damage. The high severity score underscores the need for immediate attention and remediation.

6. Technical Details for Security Professionals

Detection:

• File Integrity Monitoring: Use file integrity monitoring tools to detect unauthorized changes to the web server files.
• Log Analysis: Analyze server logs for unusual file upload activities and suspicious commands.

Response:

• Incident Response Plan: Have an incident response plan in place to quickly address any detected exploitation attempts.
• Patch Management: Ensure a robust patch management process to apply updates promptly.

Prevention:

• Security Best Practices: Follow security best practices for WordPress, including regular updates, strong passwords, and limiting administrative access.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate potential risks.

References:

• Patchstack: WordPress Multiple Page Generator Plugin 3.4.0 Remote Code Execution (RCE) Vulnerability

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