EUVD-2024-50439

Comprehensive Technical Analysis of EUVD-2024-50439

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in the Super Backup & Clone - Migrate for WordPress plugin (EUVD-2024-50439) is classified as an arbitrary file upload vulnerability. This flaw arises due to the absence of file type validation and capability checks in the ibk_restore_migrate_check() function. The severity of this vulnerability is rated at a base score of 9.8 according to CVSS v3.1, indicating a critical risk.

CVSS Vector Breakdown:

• AV:N (Network Vector): The vulnerability is exploitable over the network.
• AC:L (Low Complexity): The attack requires low skill or resources.
• PR:N (No Privileges Required): No authentication is needed to exploit the vulnerability.
• UI:N (No User Interaction): No user interaction is required.
• S:U (Unchanged): The impact does not change the scope.
• C:H (High Confidentiality Impact): Complete loss of confidentiality.
• I:H (High Integrity Impact): Complete loss of integrity.
• A:H (High Availability Impact): Complete loss of availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated File Upload: An attacker can upload arbitrary files to the server without needing any authentication.
• Remote Code Execution (RCE): By uploading malicious scripts (e.g., PHP files), an attacker can execute arbitrary code on the server.

Exploitation Methods:

• File Upload: An attacker can craft a malicious file and send it to the vulnerable endpoint.
• Code Execution: Once the file is uploaded, the attacker can trigger its execution, leading to RCE.

3. Affected Systems and Software Versions

Affected Software:

• Super Backup & Clone - Migrate for WordPress plugin

Affected Versions:

• All versions up to and including 2.3.3

Vendor:

• azzaroco

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Ensure that the plugin is updated to a version higher than 2.3.3 if a patch is available.
• Disable the Plugin: If an update is not available, consider disabling the plugin until a fix is released.

Long-Term Mitigations:

• Implement File Type Validation: Ensure that all file uploads are validated for allowed file types.
• Capability Checks: Add capability checks to restrict file uploads to authorized users only.
• Regular Audits: Conduct regular security audits and code reviews to identify and mitigate similar vulnerabilities.

Additional Security Measures:

• Web Application Firewall (WAF): Deploy a WAF to monitor and block suspicious file uploads.
• Intrusion Detection Systems (IDS): Use IDS to detect and alert on unauthorized 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 WordPress plugin. Given the widespread use of WordPress and its plugins, the potential for large-scale exploitation is high. This could lead to data breaches, website defacements, and other malicious activities, impacting the confidentiality, integrity, and availability of affected systems.

6. Technical Details for Security Professionals

Vulnerability Details:

• Function: ibk_restore_migrate_check()
• Issue: Missing file type validation and capability checks.
• Exploitability: Unauthenticated attackers can upload arbitrary files, leading to RCE.

Detection and Response:

• Log Analysis: Monitor server logs for unusual file upload activities.
• File Integrity Monitoring: Use file integrity monitoring tools to detect unauthorized file changes.
• Incident Response: Have an incident response plan in place to quickly address any detected exploitation attempts.

References:

• Wordfence Threat Intelligence
• Codecanyon Plugin Page

Aliases:

• CVE-2024-9290

Assigner:

• Wordfence

EPSS Score:

• 41 (indicating a high likelihood of exploitation)

ENISA IDs:

• Product: 166fdc06-41a3-323e-a9cb-6c977bde8851
• Vendor: 02cc2fb1-2a6c-36aa-98c8-75cafee726a7

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