CVE-2022-26116
📋 TL;DR
This CVE describes SQL injection vulnerabilities in FortiNAC that allow authenticated attackers to execute unauthorized SQL commands via crafted string parameters. It affects multiple FortiNAC versions, potentially leading to data breaches or system compromise. Users of vulnerable FortiNAC versions are at risk if attackers gain authenticated access.
💻 Affected Systems
- FortiNAC
📦 What is this software?
Fortinac by Fortinet
Fortinac by Fortinet
Fortinac by Fortinet
Fortinac by Fortinet
Fortinac by Fortinet
Fortinac by Fortinet
Fortinac by Fortinet
Fortinac by Fortinet
Fortinac by Fortinet
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise, data exfiltration, or remote code execution leading to complete control over the FortiNAC system and network devices it manages.
Likely Case
Unauthorized access to sensitive network data, manipulation of network access controls, or privilege escalation within FortiNAC.
If Mitigated
Limited impact due to network segmentation, strong authentication, and monitoring, potentially only minor data exposure if detected early.
🎯 Exploit Status
Exploitation requires authenticated access; SQL injection is a common attack vector with low complexity once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Fortinet advisory for specific patched versions (e.g., 8.3.8, 8.5.3, 8.6.6, 8.7.7, 8.8.12, 9.1.6, 9.2.3 or later as per vendor updates).
Vendor Advisory: https://fortiguard.com/psirt/FG-IR-22-062
Restart Required: Yes
Instructions:
1. Review Fortinet advisory FG-IR-22-062. 2. Identify current FortiNAC version. 3. Upgrade to a patched version as specified by Fortinet. 4. Restart the FortiNAC system after upgrade. 5. Verify the fix using version checks and monitoring.
🔧 Temporary Workarounds
Restrict Access
allLimit network access to FortiNAC to trusted IPs and enforce strong authentication.
🧯 If You Can't Patch
- Implement network segmentation to isolate FortiNAC from critical systems.
- Enhance monitoring for SQL injection attempts in logs and network traffic.
🔍 How to Verify
Check if Vulnerable:
Check FortiNAC version via web interface or CLI; compare with affected versions listed in the advisory.Check Version:
Log into FortiNAC CLI or web interface and use version command (e.g., 'get system status' or similar as per Fortinet documentation).Verify Fix Applied:
After patching, confirm version is updated to a patched release and monitor for any anomalous SQL activity.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in application logs, multiple failed login attempts followed by SQL patterns.
Network Indicators:
- Abnormal database traffic from FortiNAC system, unexpected outbound connections.
SIEM Query:
Example: search for events from FortiNAC with keywords like 'sql', 'injection', or specific parameter strings in URI or payloads.