EUVD-2024-49746

Comprehensive Technical Analysis of EUVD-2024-49746

1. Vulnerability Assessment and Severity Evaluation

The vulnerability in the WPGYM - Wordpress Gym Management System plugin (EUVD-2024-49746) is classified as an arbitrary file upload vulnerability. This type of vulnerability allows unauthenticated attackers to upload arbitrary files to the server, potentially leading to remote code execution (RCE). The severity of this vulnerability is rated with a CVSS Base Score of 9.8, which is considered critical. The CVSS vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H indicates the following:

• Attack Vector (AV): Network (N) - The vulnerability is exploitable over the network.
• Attack Complexity (AC): Low (L) - The attack requires low complexity to exploit.
• Privileges Required (PR): None (N) - No privileges are required to exploit the vulnerability.
• User Interaction (UI): None (N) - No user interaction is required.
• Scope (S): Unchanged (U) - The vulnerability does not change the security scope.
• Confidentiality (C): High (H) - There is a high impact on confidentiality.
• Integrity (I): High (H) - There is a high impact on integrity.
• Availability (A): High (H) - There is a high impact on availability.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector for this vulnerability is the MJ_gmgt_user_avatar_image_upload() function, which lacks proper file type validation. An attacker could exploit this by:

• Uploading Malicious Files: An attacker could upload a PHP file or other executable scripts disguised as an image file.
• Remote Code Execution: Once the malicious file is uploaded, the attacker could execute arbitrary code on the server, leading to full control over the affected system.
• Data Exfiltration: The attacker could use the uploaded file to exfiltrate sensitive data from the server.
• Persistent Access: The attacker could establish a backdoor for persistent access to the server.

3. Affected Systems and Software Versions

The vulnerability affects all versions of the WPGYM - Wordpress Gym Management System plugin up to and including version 67.1.0. 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 should be taken:

• Update the Plugin: Immediately update the WPGYM - Wordpress Gym Management System plugin to a version higher than 67.1.0, if available.
• Temporary Disable: If an update is not available, consider temporarily disabling the plugin until a patch is released.
• Implement File Upload Validation: Ensure that all file uploads are properly validated for type and content.
• Web Application Firewall (WAF): Deploy a WAF to monitor and block suspicious file uploads.
• Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues.

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 using the affected plugin are at risk of data breaches, unauthorized access, and potential financial losses. The high CVSS score indicates a critical risk, which could lead to widespread exploitation if not addressed promptly.

6. Technical Details for Security Professionals

• Vulnerable Function: The MJ_gmgt_user_avatar_image_upload() function is the point of vulnerability.
• Exploitation: The lack of file type validation allows attackers to upload executable files, leading to RCE.
• Detection: Monitor for unusual file uploads and unexpected file types in the upload directory.
• Response: Implement logging and alerting for file upload activities. Regularly review and update security policies for file uploads.
• Patching: Ensure that the plugin is updated to the latest version that includes a fix for this vulnerability.

Conclusion

The arbitrary file upload vulnerability in the WPGYM - Wordpress Gym Management System plugin poses a critical risk to affected systems. Immediate action is required to update the plugin and implement additional security measures to prevent exploitation. Organizations should prioritize this vulnerability in their security remediation efforts to protect against potential data breaches and unauthorized access.

References

• Wordfence Threat Intelligence
• Codecanyon WPGYM Plugin

Aliases

• CVE-2024-9942

Assigner

• Wordfence

EPSS

• 1

ENISA ID Product

• Product Name: WPGYM - Wordpress Gym Management System
• Product Version: * ≤67.1.0

ENISA ID Vendor

• Vendor Name: dasinfomedia