CVE-2024-3704
📋 TL;DR
CVE-2024-3704 is a critical SQL injection vulnerability in OpenGnsys version 1.1.1d that allows attackers to bypass authentication and potentially access the entire database. This affects all systems running the vulnerable OpenGnsys version, particularly those with internet-facing login pages.
💻 Affected Systems
- OpenGnsys
📦 What is this software?
Opengnsys by Opengnsys
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including sensitive credentials, configuration data, and user information leading to full system takeover.
Likely Case
Authentication bypass allowing unauthorized access to the OpenGnsys management interface and potential data exfiltration.
If Mitigated
Limited impact with proper input validation and database permissions restricting damage to non-sensitive data.
🎯 Exploit Status
SQL injection on login page requires no authentication. Exploitation is straightforward for attackers with basic SQLi knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patched in security updates referenced in vendor advisories
Vendor Advisory: https://opengnsys.es/web/parche-de-seguridad-cve-2024-370x
Restart Required: Yes
Instructions:
1. Backup current OpenGnsys installation and database. 2. Apply security patch from OpenGnsys advisory. 3. Restart OpenGnsys services. 4. Verify fix by testing login functionality.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection patterns targeting the login endpoint
Network Segmentation
linuxRestrict access to OpenGnsys login page to trusted IP addresses only
iptables -A INPUT -p tcp --dport [OpenGnsys-port] -s [trusted-IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [OpenGnsys-port] -j DROP
🧯 If You Can't Patch
- Implement strict input validation and parameterized queries at application layer
- Monitor and alert on suspicious SQL patterns in application logs
🔍 How to Verify
Check if Vulnerable:
Check if running OpenGnsys version 1.1.1d via web interface or configuration filesCheck Version:
Check OpenGnsys web interface or configuration files for version informationVerify Fix Applied:
Test login page with SQL injection payloads (e.g., ' OR '1'='1) and verify they are rejected📡 Detection & Monitoring
Log Indicators:
- Unusual SQL syntax in login attempts
- Multiple failed login attempts with SQL patterns
- Successful logins from unexpected IP addresses
Network Indicators:
- SQL keywords in HTTP POST requests to login endpoint
- Unusual database query patterns
SIEM Query:
source="opengnsys.log" AND ("' OR" OR "' UNION" OR "' SELECT" OR "' --" OR ";--")