EUVD-2024-47354

Comprehensive Technical Analysis of EUVD-2024-47354

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in the 简数采集器 (Keydatas) plugin for WordPress allows for arbitrary file uploads due to the lack of file type validation in the keydatas_downloadImages function. This flaw affects all versions up to and including 2.5.2. The severity of this vulnerability is rated with a CVSS Base Score of 9.8, which is considered critical. The CVSS vector 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 minimal skill and resources.
• Privileges Required (PR): None (N) - No authentication is 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) - 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

Given the nature of the vulnerability, potential attack vectors include:

• Unauthenticated File Upload: An attacker can upload arbitrary files to the server without needing any credentials.
• Remote Code Execution (RCE): By uploading malicious scripts (e.g., PHP files), an attacker can execute arbitrary code on the server, leading to full system compromise.
• Data Exfiltration: Attackers can upload scripts to exfiltrate sensitive data from the server.
• Persistent Backdoors: Malicious files can be uploaded to maintain persistent access to the compromised server.

3. Affected Systems and Software Versions

The vulnerability affects all versions of the 简数采集器 (Keydatas) plugin for WordPress up to and including version 2.5.2. Any WordPress site using this plugin within the affected version range is at risk.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following actions are recommended:

• Immediate Update: Upgrade the 简数采集器 (Keydatas) plugin to a version higher than 2.5.2 if available.
• Temporary Disablement: If an update is not immediately available, consider disabling the plugin until a patched version is released.
• File Upload Restrictions: Implement server-side file upload restrictions to only allow specific file types.
• Web Application Firewall (WAF): Deploy a WAF to monitor and block suspicious file upload attempts.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and address similar issues.
• User Education: Educate users about the risks of using outdated plugins and the importance of keeping all software up to date.

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. The potential for unauthenticated remote code execution poses a severe risk to the confidentiality, integrity, and availability of affected systems. This can lead to data breaches, financial losses, and reputational damage for organizations and individuals.

6. Technical Details for Security Professionals

Vulnerability Details:

• Function: keydatas_downloadImages
• Issue: Missing file type validation
• Exploit: Unauthenticated attackers can upload arbitrary files, potentially leading to RCE.

Detection and Response:

• Log Analysis: Monitor server logs for unusual file upload activities.
• Intrusion Detection Systems (IDS): Implement IDS to detect and alert on suspicious file upload patterns.
• Incident Response Plan: Develop and maintain an incident response plan to quickly address any detected exploitation attempts.

References:

• Wordfence Threat Intelligence
• WordPress Plugin Repository

Aliases:

• CVE-2024-6220

Assigner:

• Wordfence

EPSS Score:

• 4 (Indicates a moderate likelihood of exploitation)

ENISA IDs:

• Product: 简数采集器, versions ≤2.5.2
• Vendor: zhengdon

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