CVE-2025-48012
📋 TL;DR
CVE-2025-48012 is an authentication bypass vulnerability in Drupal's One Time Password module that allows attackers to replay captured authentication data to gain unauthorized access. This affects Drupal sites using the One Time Password module versions before 1.3.0. Attackers with stolen credentials can bypass multi-factor authentication protections.
💻 Affected Systems
- Drupal One Time Password module
📦 What is this software?
One Time Password by One Time Password Project
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover of privileged users (administrators, editors) leading to data theft, content manipulation, or site compromise.
Likely Case
Unauthorized access to user accounts with stolen credentials, potentially leading to privilege escalation if compromised accounts have elevated permissions.
If Mitigated
Limited impact if strong network controls, rate limiting, and monitoring are in place to detect replay attempts.
🎯 Exploit Status
Exploitation requires captured authentication data but is technically simple once credentials are obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.3.0
Vendor Advisory: https://www.drupal.org/sa-contrib-2025-063
Restart Required: No
Instructions:
1. Update the One Time Password module to version 1.3.0 via Drupal's update manager or Composer. 2. Clear Drupal caches. 3. Verify the update was successful.
🔧 Temporary Workarounds
Disable One Time Password module
allTemporarily disable the vulnerable module until patching is possible
drush pm:disable one_time_password
Implement network-level protections
allUse WAF rules to detect and block replay attack patterns
🧯 If You Can't Patch
- Implement strict network segmentation to limit access to affected systems
- Enable enhanced logging and monitoring for authentication attempts and replay patterns
🔍 How to Verify
Check if Vulnerable:
Check Drupal's module status page or use 'drush pm:list' to see if One Time Password module is installed and version is below 1.3.0Check Version:
drush pm:list --fields=name,version | grep one_time_passwordVerify Fix Applied:
Confirm module version is 1.3.0 or higher and test authentication flow with known credentials📡 Detection & Monitoring
Log Indicators:
- Multiple authentication attempts with same OTP/token
- Successful logins from unusual locations/times
- Failed replay attempts in authentication logs
Network Indicators:
- Repeated authentication requests with identical parameters
- Unusual traffic patterns to authentication endpoints
SIEM Query:
source="drupal_logs" AND (message="authentication" OR message="login") | stats count by src_ip, user | where count > threshold