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How the CVE Works:
The vulnerability (CVE-2025-XXXX) in Moodle’s user tours manager allows attackers to duplicate existing tours via CSRF. Since the endpoint lacks proper CSRF token validation, an attacker can craft a malicious link or webpage that triggers an unauthorized tour duplication when a logged-in Moodle admin visits it. This occurs because the application does not verify if the request was intentionally made by the user, enabling unintended actions without consent.
DailyCVE Form:
Platform: Moodle LMS
Version: <4.1.18, 4.3.0-4.3.11, 4.4.0-4.4.7, 4.5.0-4.5.3
Vulnerability: CSRF tour duplication
Severity: Low
Date: Apr 25, 2025
What Undercode Say:
Exploitation:
1. Attacker crafts HTML form/JS payload:
<form action="https://target-moodle/user/tour/duplicate.php" method="POST"> <input type="hidden" name="tourid" value="1"> </form> <script>document.forms[bash].submit();</script>
2. Victim admin clicks malicious link while authenticated.
Protection:
- Update Moodle to patched versions (4.1.18, 4.3.12, 4.4.8, 4.5.4).
2. Implement CSRF tokens in tour duplication requests:
// Example PHP CSRF check
if (!confirm_sesskey()) {
throw new moodle_exception('invalidcsrftoken');
}
3. Use `.htaccess` to restrict unauthorized POST requests:
<IfModule mod_rewrite.c>
RewriteCond %{REQUEST_METHOD} POST
RewriteCond %{HTTP_REFERER} !^https://your-moodle\.com [bash]
RewriteRule . - [bash]
</IfModule>
Detection:
1. Audit logs for unexpected `user/tour/duplicate.php` requests.
2. Check Moodle version:
grep "\$release" moodle/version.php
Mitigation:
1. Disable tours if unused via admin panel.
2. Apply WAF rules to block CSRF patterns.
References:
- Moodle Security Advisory: [bash]
- NVD Entry: CVE-2025-XXXX
- GitHub Advisory: GHSA-xxxx-xxxx-xxxx
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
