CVE-2024-7605
📋 TL;DR
The HelloAsso WordPress plugin has an authorization vulnerability where authenticated users with Contributor-level access or higher can modify plugin options without proper permission checks. This affects all versions up to 1.1.10, potentially allowing attackers to disrupt plugin functionality or service availability.
💻 Affected Systems
- HelloAsso WordPress Plugin
📦 What is this software?
Helloasso by Helloasso
⚠️ Risk & Real-World Impact
Worst Case
An attacker could modify critical plugin settings to disable functionality, redirect payments, or disrupt the HelloAsso integration entirely, potentially affecting financial transactions.
Likely Case
Attackers modify plugin options to break functionality, cause service disruption, or change configuration settings that affect user experience.
If Mitigated
With proper user access controls and monitoring, impact is limited to minor configuration changes that can be quickly reverted.
🎯 Exploit Status
Exploitation requires authenticated access with at least Contributor privileges. The vulnerability is in the ha_ajax function which lacks proper capability checks.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.1.11
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3145151/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find HelloAsso plugin and click 'Update Now'. 4. Verify version is 1.1.11 or higher.
🔧 Temporary Workarounds
Restrict User Roles
allTemporarily restrict or remove Contributor-level access from untrusted users until patching is complete.
Disable Plugin
allTemporarily disable the HelloAsso plugin if not critically needed until patched.
🧯 If You Can't Patch
- Implement strict user access controls and monitor for unauthorized configuration changes
- Add web application firewall rules to block suspicious AJAX requests to the ha_ajax function
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → HelloAsso → Version. If version is 1.1.10 or lower, you are vulnerable.Check Version:
wp plugin list --name=helloasso --field=versionVerify Fix Applied:
After updating, verify the plugin version shows 1.1.11 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusual AJAX requests to ha_ajax function from non-admin users
- Multiple failed or successful plugin option modifications
Network Indicators:
- POST requests to /wp-admin/admin-ajax.php with action=ha_ajax from non-admin IPs
SIEM Query:
source="wordpress" AND (uri="/wp-admin/admin-ajax.php" AND parameters.action="ha_ajax") AND user.role!="administrator"