CVE-2020-21119
📋 TL;DR
This SQL injection vulnerability in Kliqqi-CMS allows attackers to manipulate database queries through the recordIDValue parameter in the admin panel. Attackers can gain escalated privileges and execute arbitrary code on affected systems. Organizations running Kliqqi-CMS 2.0.2 are affected.
💻 Affected Systems
- Kliqqi-CMS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with administrative access, data exfiltration, and persistent backdoor installation.
Likely Case
Privilege escalation leading to unauthorized administrative access and potential data manipulation.
If Mitigated
Limited impact with proper input validation and database permissions restricting damage.
🎯 Exploit Status
Exploitation requires admin panel access but SQL injection is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.3 or later
Vendor Advisory: https://github.com/Kliqqi-CMS/Kliqqi-CMS/issues/259
Restart Required: No
Instructions:
1. Backup database and files. 2. Download latest version from official repository. 3. Replace vulnerable file admin/admin_update_module_widgets.php. 4. Verify parameter sanitization is implemented.
🔧 Temporary Workarounds
Input Validation Workaround
allAdd parameter validation to recordIDValue parameter
Edit admin/admin_update_module_widgets.php and add: if(!is_numeric($_POST['recordIDValue'])) { die('Invalid input'); }
🧯 If You Can't Patch
- Restrict access to admin panel using IP whitelisting or VPN
- Implement web application firewall with SQL injection rules
🔍 How to Verify
Check if Vulnerable:
Check if admin/admin_update_module_widgets.php exists and version is 2.0.2Check Version:
Check version in includes/main.php or config filesVerify Fix Applied:
Verify admin/admin_update_module_widgets.php has parameter validation for recordIDValue📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts to admin panel
Network Indicators:
- POST requests to admin/admin_update_module_widgets.php with SQL payloads
SIEM Query:
source="web_logs" AND uri="/admin/admin_update_module_widgets.php" AND (payload CONTAINS "UNION" OR payload CONTAINS "SELECT" OR payload CONTAINS "--")