CVE-2024-42165
📋 TL;DR
This vulnerability in FIWARE Keyrock allows attackers to predict activation tokens due to insufficient randomness, enabling unauthorized account activation for any user. Systems running FIWARE Keyrock version 8.4 or earlier are affected, potentially compromising user accounts and authentication integrity.
💻 Affected Systems
- FIWARE Keyrock
📦 What is this software?
Keyrock by Fiware
⚠️ Risk & Real-World Impact
Worst Case
Attackers could activate accounts for any registered user, gaining unauthorized access to user data and potentially escalating privileges within the system.
Likely Case
Attackers would activate accounts for targeted users, gaining access to their data and potentially using those accounts for further attacks.
If Mitigated
With proper monitoring and rate limiting, unauthorized activation attempts could be detected and blocked before successful exploitation.
🎯 Exploit Status
Exploitation requires predicting activation tokens, which may be feasible due to insufficient randomness in token generation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: > 8.4
Vendor Advisory: https://www.ait.ac.at/themen/cyber-security/pentesting/security-advisories
Restart Required: Yes
Instructions:
1. Upgrade FIWARE Keyrock to version 8.5 or later. 2. Restart the Keyrock service. 3. Verify the fix by testing activation token generation.
🔧 Temporary Workarounds
Disable User Self-Registration
allTemporarily disable user self-registration to prevent new account activation attacks.
Modify Keyrock configuration to disable user registration
Implement Rate Limiting
allAdd rate limiting to activation endpoints to prevent brute-force token prediction attempts.
Configure web server or application rate limiting for /v1/auth/activate endpoints
🧯 If You Can't Patch
- Implement network-level controls to restrict access to activation endpoints
- Monitor activation logs for suspicious patterns and implement alerting
🔍 How to Verify
Check if Vulnerable:
Check FIWARE Keyrock version. If version is 8.4 or earlier, the system is vulnerable.Check Version:
Check Keyrock configuration files or API endpoints for version informationVerify Fix Applied:
Verify the installation is running Keyrock version 8.5 or later and test activation token generation for randomness.📡 Detection & Monitoring
Log Indicators:
- Multiple failed activation attempts from single IP
- Successful activation for users who didn't request it
- Unusual activation patterns outside normal business hours
Network Indicators:
- High volume of requests to activation endpoints
- Requests to /v1/auth/activate with predictable token patterns
SIEM Query:
source="keyrock.log" AND ("activate" OR "activation") AND status="200" | stats count by src_ip, user