CVE-2023-5806
📋 TL;DR
This SQL injection vulnerability in Mergen Software Quality Management System allows attackers to execute arbitrary SQL commands through unvalidated user input. It affects all systems running versions before v1.2, potentially compromising database integrity and confidentiality.
💻 Affected Systems
- Mergen Software Quality Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, modification, deletion, and potential remote code execution on the database server.
Likely Case
Unauthorized data access, extraction of sensitive information, and potential privilege escalation within the application.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing successful exploitation.
🎯 Exploit Status
SQL injection vulnerabilities are typically easy to exploit with basic web security testing tools.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.2 or later
Vendor Advisory: https://www.usom.gov.tr/bildirim/tr-24-0040
Restart Required: Yes
Instructions:
1. Download v1.2 or later from official vendor sources. 2. Backup current installation and database. 3. Install the updated version following vendor documentation. 4. Restart the application service.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection protection rules to block malicious requests.
Input Validation Filter
allImplement application-level input validation to reject SQL special characters.
🧯 If You Can't Patch
- Isolate the system from internet access and restrict to internal network only.
- Implement strict network segmentation and monitor all database access attempts.
🔍 How to Verify
Check if Vulnerable:
Check application version in admin panel or configuration files. If version is below 1.2, system is vulnerable.Check Version:
Check application configuration or admin interface for version information.Verify Fix Applied:
Confirm version is 1.2 or higher and test SQL injection attempts are properly rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual database query patterns
- SQL syntax errors in application logs
- Multiple failed login attempts with SQL characters
Network Indicators:
- HTTP requests containing SQL keywords (SELECT, UNION, DROP, etc.)
- Unusual database port traffic
SIEM Query:
source="web_logs" AND ("SELECT" OR "UNION" OR "DROP" OR "INSERT" OR "UPDATE") AND status=200