CVE-2023-37871
📋 TL;DR
This vulnerability allows unauthenticated attackers to bypass authorization in the WooCommerce GoCardless payment gateway plugin by manipulating user-controlled keys. It enables Insecure Direct Object References (IDOR), potentially exposing sensitive payment data. All WordPress sites using affected versions of the plugin are vulnerable.
💻 Affected Systems
- WooCommerce GoCardless Gateway
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access, modify, or delete payment information, customer data, and transaction records, leading to financial fraud, data breaches, and regulatory violations.
Likely Case
Unauthorized access to payment gateway functionality, potential exposure of customer payment details, and manipulation of payment processing.
If Mitigated
With proper access controls and input validation, impact is limited to attempted unauthorized access that gets blocked.
🎯 Exploit Status
Exploitation requires manipulating object references in API calls or web requests.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.5.7 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'WooCommerce GoCardless Gateway'. 4. Click 'Update Now' if available, or download version 2.5.7+ from WordPress repository. 5. Activate the updated plugin.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate woocommerce-gateway-gocardless
Web Application Firewall Rules
allBlock suspicious requests to GoCardless endpoints.
Add WAF rules to block requests with manipulated object IDs to /wp-content/plugins/woocommerce-gateway-gocardless/
🧯 If You Can't Patch
- Implement strict access controls and input validation for all user-controlled parameters.
- Monitor and log all access to GoCardless payment endpoints for suspicious activity.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for 'WooCommerce GoCardless Gateway' version 2.5.6 or lower.Check Version:
wp plugin get woocommerce-gateway-gocardless --field=versionVerify Fix Applied:
Verify plugin version is 2.5.7 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to GoCardless API endpoints
- Requests with manipulated object IDs or parameters
Network Indicators:
- Unusual traffic patterns to /wp-content/plugins/woocommerce-gateway-gocardless/
SIEM Query:
source="wordpress.log" AND ("woocommerce-gateway-gocardless" OR "gocardless") AND (status=403 OR status=401)🔗 References
- https://patchstack.com/database/vulnerability/woocommerce-gateway-gocardless/wordpress-woocommerce-gocardless-gateway-plugin-2-5-6-unauthenticated-insecure-direct-object-references-idor-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/woocommerce-gateway-gocardless/wordpress-woocommerce-gocardless-gateway-plugin-2-5-6-unauthenticated-insecure-direct-object-references-idor-vulnerability?_s_id=cve
