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CVE-2023-6751: Unauthorized Plugin Settings Update Vulnerability in Hostinger WordPress Plugin

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Overview

A critical vulnerability, identified as CVE-2023-6751, has been discovered in the Hostinger plugin for WordPress. This vulnerability affects all versions up to and including 1.9.7 of the plugin. The vulnerability allows unauthenticated attackers to manipulate plugin settings, potentially leading to system compromise or data leakage. It is therefore crucial for users and administrators of WordPress sites running the Hostinger plugin to take immediate action to mitigate this risk.

Vulnerability Summary

CVE ID: CVE-2023-6751
Severity: High (7.3 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Unauthorized settings update leading to potential system compromise or data leakage

Affected Products

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Product | Affected Versions

Hostinger Plugin for WordPress | Up to and including 1.9.7

How the Exploit Works

The exploit leverages a missing capability check in the function publish_website within the Hostinger plugin for WordPress. An attacker can send a specially crafted request to this function, which would then allow them to manipulate the plugin’s settings, including enabling or disabling maintenance mode, without requiring any form of authentication.

Conceptual Example Code

This is a
conceptual
example of how the vulnerability might be exploited. It represents a hypothetical HTTP request to the vulnerable endpoint:

POST /wp-admin/admin-ajax.php?action=hostinger_publish_website HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "maintenance_mode": "enable" }

In this example, the attacker is trying to enable the maintenance mode on the target site by sending a malicious JSON payload to the administrative endpoint of the WordPress site.

Mitigation Guidance

The recommended mitigation strategy is to apply the vendor patch as soon as it becomes available. In the meantime, users can employ a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. Regular monitoring of system logs for any suspicious activity is also advised.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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