CVE-2023-51376 – CVE-2023-51376 is a missing authorization vulne... (How to Fix)

📋 TL;DR

CVE-2023-51376 is a missing authorization vulnerability in the ProjectHuddle Client Site WordPress plugin that allows unauthorized users to access functionality intended only for authorized users. This affects WordPress sites using ProjectHuddle Client Site plugin versions up to 1.0.34. The vulnerability enables broken access control where users can perform actions without proper authentication.

💻 Affected Systems

Products:

ProjectHuddle Client Site WordPress Plugin

Versions: n/a through 1.0.34

Operating Systems: Any OS running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: Only affects WordPress installations with ProjectHuddle Client Site plugin installed and activated.

📦 What is this software?

Surefeedback by Brainstormforce

View all CVEs affecting Surefeedback →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Unauthorized users could access sensitive project data, modify client site configurations, or perform administrative actions within the ProjectHuddle ecosystem, potentially leading to data exposure or unauthorized changes.

🟠

Likely Case

Unauthorized users accessing client site functionality they shouldn't have access to, potentially viewing project details or making limited changes to client site settings.

🟢

If Mitigated

With proper network segmentation and authentication controls, impact would be limited to the specific plugin functionality rather than broader system compromise.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: LOW

Exploitation requires understanding of WordPress plugin structure but is straightforward once identified. The vulnerability is in authorization checks rather than authentication.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.0.35 or later

Vendor Advisory: https://patchstack.com/database/vulnerability/projecthuddle-child-site/wordpress-projecthuddle-client-site-plugin-1-0-34-broken-access-control-vulnerability

Restart Required: No

Instructions:

1. Log into WordPress admin panel
2. Navigate to Plugins → Installed Plugins
3. Find 'ProjectHuddle Client Site'
4. Click 'Update Now' if available
5. If no update appears, download version 1.0.35+ from WordPress.org
6. Deactivate old plugin, upload new version, activate

🔧 Temporary Workarounds

Disable Plugin

all

Temporarily disable the vulnerable plugin until patched

wp plugin deactivate projecthuddle-child-site

Restrict Access

all

Use web application firewall rules to restrict access to ProjectHuddle endpoints

🧯 If You Can't Patch

Implement strict network access controls to limit who can access the WordPress site
Enable detailed logging and monitoring for unauthorized access attempts to ProjectHuddle endpoints

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → ProjectHuddle Client Site → Version. If version is 1.0.34 or lower, you are vulnerable.

Check Version:

wp plugin get projecthuddle-child-site --field=version

Verify Fix Applied:

After updating, verify plugin version shows 1.0.35 or higher in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

Unauthorized access attempts to ProjectHuddle API endpoints
Multiple failed authentication attempts followed by successful ProjectHuddle actions

Network Indicators:

Unusual traffic patterns to /wp-content/plugins/projecthuddle-child-site/ endpoints from unauthorized IPs

SIEM Query:

source="wordpress.log" AND "projecthuddle" AND ("unauthorized" OR "access denied")

📊 Metadata

CVE ID: CVE-2023-51376

CVSS v3 Score: 4.3 (MEDIUM)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CWE: CWE-862

Published: June 14, 2024

Last Updated: November 21, 2024

🔗 References

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🔗 Related Vulnerabilities

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