CVE-2023-3105
📋 TL;DR
The LearnDash LMS WordPress plugin up to version 4.6.0 contains an Insecure Direct Object Reference vulnerability that allows authenticated users at any privilege level to bypass authorization controls. This enables attackers to change user passwords, potentially leading to administrator account takeover. All WordPress sites using vulnerable LearnDash versions are affected.
💻 Affected Systems
- LearnDash LMS WordPress Plugin
📦 What is this software?
Learndash by Learndash
⚠️ Risk & Real-World Impact
Worst Case
Complete site compromise through administrator account takeover, leading to data theft, malware installation, or site defacement.
Likely Case
Privilege escalation allowing attackers to gain administrative access and modify site content, user data, or install malicious plugins.
If Mitigated
Limited impact if proper access controls and monitoring are in place, potentially only affecting non-critical user accounts.
🎯 Exploit Status
Exploitation requires authenticated access but at any privilege level. Attack path is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.6.1
Vendor Advisory: https://www.learndash.com/release-notes/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find LearnDash LMS and click 'Update Now'. 4. Verify version is 4.6.1 or higher.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
allDisable LearnDash plugin until patched to prevent exploitation
wp plugin deactivate sfwd-lms
Restrict User Registration
allTemporarily disable new user registration to limit attack surface
wp option update users_can_register 0
🧯 If You Can't Patch
- Implement strict access controls and monitor for unusual user activity
- Apply web application firewall rules to block suspicious user modification requests
🔍 How to Verify
Check if Vulnerable:
Check LearnDash plugin version in WordPress admin panel under Plugins > Installed PluginsCheck Version:
wp plugin get sfwd-lms --field=versionVerify Fix Applied:
Confirm LearnDash version is 4.6.1 or higher in plugin details📡 Detection & Monitoring
Log Indicators:
- Unusual password reset requests
- User privilege escalation attempts
- Multiple failed login attempts followed by successful password changes
Network Indicators:
- HTTP POST requests to user modification endpoints from non-admin accounts
SIEM Query:
source="wordpress.log" AND ("password_change" OR "user_update") AND user_role!="administrator"