CVE-2024-0619
📋 TL;DR
The Payflex Payment Gateway WordPress plugin has a missing capability check vulnerability that allows unauthenticated attackers to modify order statuses. This affects all WordPress sites using Payflex Payment Gateway versions 2.5.0 and earlier. Attackers can mark orders as paid without actual payment, potentially causing revenue loss for e-commerce sites.
💻 Affected Systems
- Payflex Payment Gateway WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers mark all orders as paid without payment, causing complete revenue loss and inventory depletion without compensation.
Likely Case
Attackers selectively mark high-value orders as paid, causing significant but targeted revenue loss.
If Mitigated
With proper monitoring, unauthorized order status changes are detected quickly and can be reversed before fulfillment.
🎯 Exploit Status
The vulnerability is in a publicly accessible callback function requiring no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.5.1 or later
Vendor Advisory: https://plugins.trac.wordpress.org/browser/payflex-payment-gateway/trunk/partpay.php
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Go to Plugins → Installed Plugins. 3. Find Payflex Payment Gateway. 4. Click 'Update Now' if available. 5. If no update appears, download version 2.5.1+ from WordPress.org and manually update.
🔧 Temporary Workarounds
Disable Payflex Plugin
allTemporarily disable the Payflex Payment Gateway plugin until patched
wp plugin deactivate payflex-payment-gateway
Block Payment Callback Endpoint
linuxBlock access to the vulnerable payment_callback() function via web server configuration
# Apache: RewriteRule ^/wp-content/plugins/payflex-payment-gateway/.*\.php$ - [F,L]
# Nginx: location ~ /wp-content/plugins/payflex-payment-gateway/.*\.php$ { deny all; }
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block requests to the payment_callback endpoint
- Enable detailed logging of all order status changes and implement real-time alerts for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Payflex Payment Gateway version 2.5.0 or earlierCheck Version:
wp plugin get payflex-payment-gateway --field=versionVerify Fix Applied:
Verify Payflex Payment Gateway plugin version is 2.5.1 or later in WordPress admin📡 Detection & Monitoring
Log Indicators:
- POST requests to /wp-content/plugins/payflex-payment-gateway/partpay.php with order status changes
- Order status updates without corresponding payment transactions
Network Indicators:
- HTTP requests to plugin callback URLs from unexpected IP addresses
SIEM Query:
source="web_access_logs" AND uri="/wp-content/plugins/payflex-payment-gateway/partpay.php" AND method="POST" AND NOT user_agent="WordPress/*"🔗 References
- https://plugins.trac.wordpress.org/browser/payflex-payment-gateway/trunk/partpay.php#L751
- https://www.wordfence.com/threat-intel/vulnerabilities/id/9f740cfa-7163-4634-9705-0e01ee571a11?source=cve
- https://plugins.trac.wordpress.org/browser/payflex-payment-gateway/trunk/partpay.php#L751
- https://www.wordfence.com/threat-intel/vulnerabilities/id/9f740cfa-7163-4634-9705-0e01ee571a11?source=cve
