CVE-2025-67509
📋 TL;DR
CVE-2025-67509 is a read-only bypass vulnerability in Neuron AI framework's MySQLSelectTool that allows file writing via SQL injection. Attackers who can influence tool input (e.g., through prompt injection) may write arbitrary files to the database server if the MySQL account has FILE privilege. This affects Neuron versions 2.8.11 and below.
💻 Affected Systems
- Neuron AI Framework
📦 What is this software?
Neuron by Neuron Ai
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution via web shell deployment, data exfiltration, or complete system compromise if files can be written to web-accessible directories with executable permissions.
Likely Case
File system writes to database server, potentially leading to data manipulation, denial of service, or privilege escalation depending on file locations and permissions.
If Mitigated
Limited impact if MySQL FILE privilege is revoked, proper input validation is implemented, or web directories are not writable.
🎯 Exploit Status
Exploitation requires ability to influence MySQLSelectTool input, which typically means some level of access to agent endpoints.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.8.12
Vendor Advisory: https://github.com/neuron-core/neuron-ai/security/advisories/GHSA-j8g6-5gqc-mq36
Restart Required: Yes
Instructions:
1. Backup your current Neuron installation. 2. Update to version 2.8.12 via composer: composer require neuron-core/neuron-ai:2.8.12. 3. Restart your web server and any running Neuron services.
🔧 Temporary Workarounds
Revoke MySQL FILE Privilege
allRemove FILE privilege from MySQL/MariaDB user accounts used by Neuron to prevent file writing operations.
REVOKE FILE ON *.* FROM 'neuron_user'@'localhost';
FLUSH PRIVILEGES;
Input Validation Enhancement
allAdd additional validation to block SQL commands containing INTO OUTFILE, INTO DUMPFILE, and other file-writing constructs.
🧯 If You Can't Patch
- Restrict MySQL user permissions to read-only operations only
- Implement network segmentation to isolate database servers from web-accessible systems
🔍 How to Verify
Check if Vulnerable:
Check Neuron version in composer.json or via php artisan --version if using Laravel integration. Versions 2.8.11 and below are vulnerable.Check Version:
composer show neuron-core/neuron-ai | grep versionsVerify Fix Applied:
Confirm version is 2.8.12 or higher and test that MySQLSelectTool rejects queries containing INTO OUTFILE or INTO DUMPFILE.📡 Detection & Monitoring
Log Indicators:
- MySQL queries containing INTO OUTFILE or INTO DUMPFILE from Neuron application
- File creation in unexpected directories on database server
Network Indicators:
- Unusual outbound file transfers from database server
- SQL injection attempts targeting Neuron endpoints
SIEM Query:
source="mysql.log" AND ("INTO OUTFILE" OR "INTO DUMPFILE") AND src_ip="neuron_server_ip"