CVE-2024-42163
📋 TL;DR
This vulnerability in FIWARE Keyrock allows attackers to predict password reset tokens due to insufficient randomness. Attackers can take over any user account by generating valid password reset links. All users of FIWARE Keyrock version 8.4 and earlier are affected.
💻 Affected Systems
- FIWARE Keyrock
📦 What is this software?
Keyrock by Fiware
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover of all users, including administrators, leading to full system compromise and data breach.
Likely Case
Targeted account takeover of specific users, potentially leading to unauthorized access to sensitive data and privilege escalation.
If Mitigated
Limited impact with proper monitoring and multi-factor authentication in place, though account compromise remains possible.
🎯 Exploit Status
Attack requires only the ability to predict or brute-force password reset tokens.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.5 or later
Vendor Advisory: https://www.ait.ac.at/themen/cyber-security/pentesting/security-advisories
Restart Required: Yes
Instructions:
1. Backup your current Keyrock installation. 2. Upgrade to FIWARE Keyrock version 8.5 or later. 3. Restart the Keyrock service. 4. Verify the fix by testing password reset functionality.
🔧 Temporary Workarounds
Disable Password Reset
allTemporarily disable the password reset functionality until patching is complete.
Modify Keyrock configuration to disable password reset endpoints
Implement Rate Limiting
allAdd rate limiting to password reset endpoints to prevent brute-force attacks.
Configure web server or application firewall to limit requests to /password/reset endpoints
🧯 If You Can't Patch
- Implement multi-factor authentication for all user accounts
- Monitor logs for unusual password reset activity and failed attempts
🔍 How to Verify
Check if Vulnerable:
Check if running FIWARE Keyrock version 8.4 or earlier. Review password reset token generation code for insufficient randomness.Check Version:
Check Keyrock configuration files or admin interface for version informationVerify Fix Applied:
After upgrading to version 8.5+, test password reset functionality and verify tokens are cryptographically random.📡 Detection & Monitoring
Log Indicators:
- Multiple failed password reset attempts from single IP
- Successful password resets for multiple accounts from same source
- Unusual pattern of password reset requests
Network Indicators:
- High volume of requests to password reset endpoints
- Requests to /password/reset with predictable token patterns
SIEM Query:
source="keyrock.log" AND ("password reset" OR "/password/reset") | stats count by src_ip