CVE-2024-34818 – This Cross-Site Request Forgery (CSRF) vulnerab... (How to Fix)

📋 TL;DR

This Cross-Site Request Forgery (CSRF) vulnerability in the WebinarPress WordPress plugin allows attackers to trick authenticated administrators into performing unintended actions. It affects all WordPress sites running WebinarPress versions up to 1.33.17. Attackers could modify plugin settings or perform other administrative actions without the victim's knowledge.

💻 Affected Systems

Products:

WebinarPress WordPress Plugin

Versions: n/a through 1.33.17

Operating Systems: All operating systems running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: Only affects WordPress installations with WebinarPress plugin installed and activated. Requires an authenticated administrator to be tricked into clicking a malicious link.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:

Review the CVE details at NVD
Check vendor security advisories for your specific version
Test if the vulnerability is exploitable in your environment
Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could completely compromise the WordPress site by changing administrator credentials, installing backdoors, or modifying critical site settings through forged requests executed by authenticated administrators.

🟠

Likely Case

Attackers modify webinar settings, change plugin configurations, or perform other administrative actions that could disrupt webinar functionality or compromise user data.

🟢

If Mitigated

With proper CSRF protections and user awareness, the impact is minimal as legitimate requests would be properly validated and users would be cautious about clicking suspicious links.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ✅ No

Complexity: LOW

CSRF attacks are well-understood and relatively easy to implement. Exploitation requires social engineering to trick authenticated users into clicking malicious links.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.33.18 or later

Vendor Advisory: https://patchstack.com/database/vulnerability/wp-webinarsystem/wordpress-webinar-plugin-1-33-17-cross-site-request-forgery-csrf-vulnerability

Restart Required: No

Instructions:

1. Log into WordPress admin panel
2. Navigate to Plugins → Installed Plugins
3. Find WebinarPress plugin
4. Click 'Update Now' if available
5. Alternatively, download version 1.33.18+ from WordPress repository
6. Deactivate old version and upload new version
7. Reactivate plugin

🔧 Temporary Workarounds

Implement CSRF Protection Headers

all

Add security headers to WordPress to help prevent CSRF attacks

Add to .htaccess: Header set X-Frame-Options "SAMEORIGIN"
Add to .htaccess: Header set Content-Security-Policy "frame-ancestors 'self'"

Use WordPress Security Plugins

all

Install security plugins that provide CSRF protection

Install Wordfence, iThemes Security, or Sucuri Security plugin

🧯 If You Can't Patch

Temporarily deactivate the WebinarPress plugin until patching is possible
Implement strict access controls and limit administrative access to trusted networks only

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Installed Plugins → WebinarPress version

Check Version:

wp plugin list --name=webinar* --field=version

Verify Fix Applied:

Verify WebinarPress version is 1.33.18 or higher in WordPress admin panel

📡 Detection & Monitoring

Log Indicators:

Unusual administrative actions from unexpected IP addresses
Multiple failed CSRF token validations in WordPress logs

Network Indicators:

HTTP POST requests to WebinarPress admin endpoints without proper referrer headers
Requests containing WebinarPress-specific parameters from unexpected sources

SIEM Query:

source="wordpress.log" AND ("webinar" OR "webinarpress") AND ("admin" OR "settings") AND status=200 AND referrer NOT CONTAINS own_domain

📊 Metadata

CVE ID: CVE-2024-34818

CVSS v3 Score: 7.1 (HIGH)

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

CWE: CWE-352

Published: May 14, 2024

Last Updated: November 21, 2024

🔗 References

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