CVE-2025-6675
📋 TL;DR
This vulnerability allows attackers to bypass multi-factor authentication in Drupal Enterprise MFA - TFA for Drupal by using an alternate path or channel. It affects all Drupal sites using vulnerable versions of the Enterprise MFA - TFA module. Attackers could potentially gain unauthorized access to user accounts without completing MFA requirements.
💻 Affected Systems
- Enterprise MFA - TFA for Drupal
📦 What is this software?
Miniorange 2fa by Miniorange
Miniorange 2fa by Miniorange
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative access to Drupal sites, leading to data theft, site defacement, or complete system compromise.
Likely Case
Attackers bypass MFA to access user accounts with elevated privileges, potentially stealing sensitive data or performing unauthorized actions.
If Mitigated
With proper network segmentation and monitoring, impact is limited to isolated systems with rapid detection of unauthorized access attempts.
🎯 Exploit Status
Exploitation requires understanding of the authentication bypass mechanism but appears straightforward based on CWE-288 classification.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.8.0, 5.2.1, 5.0.*, 5.1.*
Vendor Advisory: https://www.drupal.org/sa-contrib-2025-082
Restart Required: No
Instructions:
1. Update Enterprise MFA - TFA module to version 4.8.0 or higher for 4.x branch. 2. Update to 5.2.1 or higher for 5.x branch. 3. Clear Drupal cache after update.
🔧 Temporary Workarounds
Disable Enterprise MFA - TFA module
linuxTemporarily disable the vulnerable module until patching is possible
drush pm-disable enterprise_mfa_tfa
Implement additional authentication layer
allAdd web application firewall rules to block suspicious authentication attempts
🧯 If You Can't Patch
- Implement network segmentation to isolate Drupal systems
- Enable detailed authentication logging and monitor for MFA bypass attempts
🔍 How to Verify
Check if Vulnerable:
Check installed module version via Drupal admin interface or using drush: drush pm-list | grep enterprise_mfa_tfaCheck Version:
drush pm-list --fields=name,version | grep enterprise_mfa_tfaVerify Fix Applied:
Verify module version is 4.8.0+ or 5.2.1+ and test MFA functionality📡 Detection & Monitoring
Log Indicators:
- Authentication attempts without MFA completion
- Multiple failed login attempts followed by successful login
- User account access from unusual locations
Network Indicators:
- Unusual authentication traffic patterns
- Requests to authentication endpoints without MFA verification
SIEM Query:
source="drupal" AND (event_type="authentication" AND mfa_status="bypassed") OR (event_type="user_login" AND NOT mfa_completed="true")