EUVD-2024-44466

Comprehensive Technical Analysis of EUVD-2024-44466

1. Vulnerability Assessment and Severity Evaluation

The vulnerability in the InstaWP Connect – 1-click WP Staging & Migration plugin for WordPress allows unauthenticated attackers to perform arbitrary option updates due to missing authorization checks on REST API calls. This vulnerability is present in all versions up to and including 0.1.0.38. The severity of this vulnerability is rated with a CVSS Base Score of 9.8, which is considered critical.

CVSS Vector Breakdown:

• AV:N (Network): The vulnerability is exploitable over the network.
• AC:L (Low): The attack complexity is low, meaning it does not require specialized conditions.
• PR:N (None): No privileges are required to exploit the vulnerability.
• UI:N (None): No user interaction is required.
• S:U (Unchanged): The scope of the vulnerability does not change.
• C:H (High): Confidentiality impact is high.
• I:H (High): Integrity impact is high.
• A:H (High): Availability impact is high.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Access: Attackers can exploit the vulnerability without needing any credentials.
• REST API Calls: The vulnerability is triggered through unauthorized REST API calls.

Exploitation Methods:

• Arbitrary Option Updates: Attackers can update arbitrary site options, leading to significant changes in the site's configuration.
• Administrator Account Creation: Attackers can create new administrator accounts, gaining full control over the WordPress site.
• Connecting to InstaWP API: Attackers can connect the site to the InstaWP API, potentially leading to data exfiltration or unauthorized actions.

3. Affected Systems and Software Versions

Affected Software:

• InstaWP Connect – 1-click WP Staging & Migration plugin for WordPress

Affected Versions:

• All versions up to and including 0.1.0.38

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Ensure that the InstaWP Connect plugin is updated to a version higher than 0.1.0.38.
• Disable REST API: Temporarily disable the REST API if an immediate update is not possible.
• Monitor for Unauthorized Changes: Implement monitoring to detect any unauthorized changes to site options or the creation of new administrator accounts.

Long-Term Strategies:

• Regular Updates: Maintain a regular update schedule for all plugins and themes.
• Access Controls: Implement strict access controls and authentication mechanisms for REST API endpoints.
• Security Plugins: Use security plugins like Wordfence to monitor and protect against vulnerabilities.

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. The potential for unauthorized access and control over WordPress sites can lead to data breaches, unauthorized data manipulation, and loss of service. Given the widespread use of WordPress, this vulnerability could affect a large number of websites, including those of critical infrastructure and public services.

6. Technical Details for Security Professionals

Vulnerability Details:

• Missing Authorization Checks: The REST API endpoints lack proper authorization checks, allowing unauthenticated users to perform actions that should be restricted to authorized users.
• Arbitrary Option Updates: The vulnerability allows attackers to update any site option, which can include critical settings like site URL, database credentials, and user roles.

Code Reference:

• The vulnerability is located in the class-instawp-rest-api.php file, specifically around line 926. Security professionals should review this section of the code to understand the missing authorization checks.

References:

• Wordfence Threat Intelligence
• WordPress Plugin Repository

Aliases:

• CVE-2024-4898

Assigner:

• Wordfence

EPSS Score:

• 46 (indicating a moderate likelihood of exploitation)

ENISA IDs:

• Product: 96d72156-055b-396c-bf59-baff9a13b930
• Vendor: dd74bca3-6f33-3318-b061-f689054dc78e

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risk of unauthorized access and ensure the integrity and availability of their WordPress sites.