CVE-2023-37969
📋 TL;DR
This CVE describes a missing authorization vulnerability in the Checkout with Zelle on Woocommerce WordPress plugin that allows attackers to bypass access controls. It affects all WordPress sites using this plugin version 3.1 and earlier. Attackers could potentially access restricted functionality or data.
💻 Affected Systems
- Checkout with Zelle on Woocommerce WordPress plugin
⚠️ 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.
- 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 modify payment settings, access customer payment data, or manipulate Zelle transactions, potentially leading to financial fraud or data theft.
Likely Case
Unauthorized users could access administrative functions of the Zelle payment module, potentially modifying payment configurations or viewing restricted data.
If Mitigated
With proper access controls and authentication checks, only authorized administrators can access payment configuration and transaction data.
🎯 Exploit Status
Exploitation requires some level of access to the WordPress site but bypasses authorization checks within the plugin.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 3.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Checkout with Zelle on Woocommerce'. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete plugin, then install latest version from WordPress repository.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
allDisable the vulnerable plugin until patched version is available
wp plugin deactivate wc-zelle
Access Restriction via .htaccess
linuxRestrict access to plugin directories
# Add to .htaccess in plugin directory:
Order Deny,Allow
Deny from all
🧯 If You Can't Patch
- Deactivate the Checkout with Zelle plugin and use alternative payment methods
- Implement web application firewall rules to block suspicious access to plugin endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'Checkout with Zelle on Woocommerce' version 3.1 or earlierCheck Version:
wp plugin get wc-zelle --field=versionVerify Fix Applied:
Verify plugin version is greater than 3.1 in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to /wp-content/plugins/wc-zelle/ endpoints
- Multiple failed authentication attempts followed by successful access to payment functions
Network Indicators:
- Unusual HTTP requests to Zelle plugin endpoints from unauthorized IPs
- POST requests to payment configuration endpoints without proper authentication
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-admin/admin-ajax.php" AND action="*zelle*" AND user_role!="administrator")