CVE-2023-34732
📋 TL;DR
This vulnerability in Flytxt NEON-dX allows attackers to perform brute force attacks against the change password function by exploiting the userId parameter. Attackers can discover user passwords through automated guessing attempts. Organizations using the affected version of NEON-dX are at risk.
💻 Affected Systems
- Flytxt NEON-dX
📦 What is this software?
Neon Dx by Flytxt
⚠️ Risk & Real-World Impact
Worst Case
Attackers could compromise administrative accounts, gain full system access, and potentially pivot to other systems in the network.
Likely Case
Attackers will compromise regular user accounts to access sensitive data and perform unauthorized actions within the application.
If Mitigated
With proper rate limiting and account lockout policies, impact is limited to temporary account lockouts and failed login noise.
🎯 Exploit Status
Exploitation requires access to the change password function but no authentication; tools for brute forcing are widely available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None known
Restart Required: No
Instructions:
No official patch available; implement workarounds and monitor for vendor updates.
🔧 Temporary Workarounds
Implement Rate Limiting
allAdd rate limiting to the change password endpoint to prevent brute force attempts.
Configure web server or application firewall to limit requests to /change-password endpoint to 5 per minute per IP.
Add Account Lockout
allImplement account lockout after multiple failed password change attempts.
Modify application code to lock user accounts after 5 failed password change attempts for 30 minutes.
🧯 If You Can't Patch
- Restrict network access to NEON-dX to trusted IPs only using firewall rules.
- Monitor logs for repeated failed password change attempts and alert on suspicious patterns.
🔍 How to Verify
Check if Vulnerable:
Check if running version v0.0.1-SNAPSHOT-6.9-qa-2-9-g5502a0c; test by attempting multiple password change requests to see if they're rate-limited.Check Version:
Check application configuration files or version endpoint if available.Verify Fix Applied:
Verify that rate limiting or account lockout is enforced by testing with automated tools.📡 Detection & Monitoring
Log Indicators:
- Multiple failed password change attempts for same userId
- Unusual patterns of POST requests to /change-password
Network Indicators:
- High volume of requests to change password endpoint from single IP
SIEM Query:
source="neon-dx" AND (url="/change-password" AND status="400" OR "401") | stats count by src_ip, user_id | where count > 10