CVE-2024-48901
📋 TL;DR
This CVE describes an improper authorization vulnerability in Moodle where users can access report schedules without proper edit permissions. This affects Moodle instances where users have report viewing capabilities but should not be able to schedule reports. The vulnerability allows unauthorized access to scheduling functionality.
💻 Affected Systems
- Moodle
📦 What is this software?
Moodle by Moodle
Moodle by Moodle
Moodle by Moodle
Moodle by Moodle
⚠️ Risk & Real-World Impact
Worst Case
Unauthorized users could schedule reports they shouldn't have access to, potentially exposing sensitive data or causing resource exhaustion through excessive report generation.
Likely Case
Users with limited report access could schedule reports they're not authorized to edit, potentially accessing data beyond their intended permissions.
If Mitigated
With proper access controls and monitoring, impact would be limited to minor information disclosure or configuration changes.
🎯 Exploit Status
Exploitation requires authenticated access to Moodle. Attack complexity is low as it involves accessing specific report scheduling functionality without proper authorization checks.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Moodle security releases for specific patched version
Vendor Advisory: https://moodle.org/security/
Restart Required: No
Instructions:
1. Check Moodle security advisories for affected versions
2. Update to the latest patched version of Moodle
3. Apply the security patch if available for your version
4. Verify authorization checks for report scheduling are functioning correctly
🔧 Temporary Workarounds
Disable report scheduling
allTemporarily disable report scheduling functionality until patched
Navigate to Moodle admin panel > Reports > Schedules > Disable scheduling
Restrict report access
allReview and tighten report access permissions for all users
Review user roles and capabilities in Moodle admin panel
🧯 If You Can't Patch
- Implement strict access controls and monitoring for report scheduling activities
- Regularly audit user permissions and report access logs for unauthorized scheduling attempts
🔍 How to Verify
Check if Vulnerable:
Test if users without edit permissions can access report scheduling functionality. Check Moodle version against security advisories.Check Version:
Check Moodle version in Site administration > Notifications or via moodle_version table in databaseVerify Fix Applied:
Verify that users without proper edit permissions cannot access report scheduling. Confirm Moodle version is updated to patched release.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to report scheduling pages
- Report schedule creation/modification by users without edit permissions
Network Indicators:
- HTTP requests to report scheduling endpoints from unauthorized users
SIEM Query:
source="moodle_logs" AND (event="report_schedule_access" OR event="unauthorized_access") AND user_role!="editor"