CVE-2024-13276
📋 TL;DR
This vulnerability in Drupal File Entity module allows attackers to access sensitive files through forceful browsing by manipulating URLs. It affects Drupal 7 sites using File Entity module versions before 7.x-2.39.
💻 Affected Systems
- Drupal File Entity (fieldable files) module
📦 What is this software?
File Entity by File Entity Project
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access sensitive files containing credentials, configuration data, or user information, potentially leading to full system compromise.
Likely Case
Unauthorized access to uploaded files that should be protected, potentially exposing sensitive user data or internal documents.
If Mitigated
With proper access controls and file permissions, impact is limited to files that should already be publicly accessible.
🎯 Exploit Status
Requires knowledge of file paths and some trial-and-error to find sensitive files.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.x-2.39
Vendor Advisory: https://www.drupal.org/sa-contrib-2024-040
Restart Required: No
Instructions:
1. Update File Entity module to version 7.x-2.39 or later. 2. Clear Drupal caches. 3. Verify the update was successful.
🔧 Temporary Workarounds
Restrict file access via .htaccess
ApacheAdd access restrictions to sensitive file directories
Add 'Deny from all' to .htaccess in sensitive directories
🧯 If You Can't Patch
- Disable the File Entity module if not essential
- Implement strict file permission controls on server
🔍 How to Verify
Check if Vulnerable:
Check File Entity module version in Drupal admin at Reports > Available updatesCheck Version:
drush pm-list | grep 'file_entity'Verify Fix Applied:
Confirm File Entity module version is 7.x-2.39 or higher📡 Detection & Monitoring
Log Indicators:
- Multiple 403/404 errors for file paths
- Unusual file access patterns
Network Indicators:
- Repeated requests to file paths with incremental names/numbers
SIEM Query:
source="drupal_access" AND (status=403 OR status=404) AND uri LIKE "%.php" OR uri LIKE "%.txt" OR uri LIKE "%.conf"