CVE-2024-33529
📋 TL;DR
This vulnerability allows authenticated administrators in ILIAS e-learning platforms to execute arbitrary operating system commands by uploading files with dangerous file types. It affects ILIAS versions 7 before 7.30, 8 before 8.11, and 9.0. Attackers with administrative access can achieve remote code execution on the server.
💻 Affected Systems
- ILIAS Learning Management System
📦 What is this software?
Ilias by Ilias
Ilias by Ilias
Ilias by Ilias
⚠️ Risk & Real-World Impact
Worst Case
Full server compromise allowing attackers to execute arbitrary commands, access sensitive data, install malware, or pivot to other systems.
Likely Case
Attackers with administrative credentials achieve remote code execution, potentially compromising the entire ILIAS instance and underlying server.
If Mitigated
With proper access controls limiting administrative privileges, impact is reduced to authorized administrators only.
🎯 Exploit Status
Exploitation requires administrative privileges but is straightforward once authenticated
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: ILIAS 7.30, ILIAS 8.11, ILIAS 9.1
Vendor Advisory: https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&cmd=layout&ref_id=1719&obj_id=170040
Restart Required: No
Instructions:
1. Backup your ILIAS installation and database. 2. Download the patched version from the official ILIAS website. 3. Follow the ILIAS upgrade documentation for your version. 4. Verify the upgrade was successful.
🔧 Temporary Workarounds
Restrict Administrative Access
allLimit administrative accounts to only essential personnel and implement strong authentication controls
File Upload Restrictions
allImplement additional file type validation and upload restrictions at the web server or application firewall level
🧯 If You Can't Patch
- Implement strict access controls for administrative accounts and monitor administrative activity
- Deploy a web application firewall with rules to block suspicious file uploads and command execution attempts
🔍 How to Verify
Check if Vulnerable:
Check your ILIAS version in the administration interface or by examining the installation filesCheck Version:
Check the ILIAS administration dashboard or examine the ilias.ini.php configuration fileVerify Fix Applied:
Verify the version number shows 7.30 or higher for ILIAS 7, 8.11 or higher for ILIAS 8, or 9.1 or higher for ILIAS 9📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads by administrative users
- Suspicious system commands in web server logs
- Multiple failed upload attempts with unusual file types
Network Indicators:
- Unusual outbound connections from the ILIAS server
- Command and control traffic patterns
SIEM Query:
source="web_server_logs" AND (uri="*upload*" OR uri="*file*upload*") AND (user_agent="*admin*" OR user="*admin*") AND status=200🔗 References
- https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&cmd=layout&ref_id=1719&obj_id=170040
- https://insinuator.net/2024/05/security-advisory-achieving-php-code-execution-in-ilias-elearning-lms-before-v7-30-v8-11-v9-1/
- https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&cmd=layout&ref_id=1719&obj_id=170040
- https://insinuator.net/2024/05/security-advisory-achieving-php-code-execution-in-ilias-elearning-lms-before-v7-30-v8-11-v9-1/
