CVE-2023-37931
📋 TL;DR
This SQL injection vulnerability in FortiVoice Enterprise allows authenticated attackers to execute arbitrary SQL commands via crafted HTTP/HTTPS requests. Affected systems include FortiVoice Enterprise versions 7.0.0 through 7.0.1 and all versions before 6.4.8. Attackers could potentially access, modify, or delete sensitive database information.
💻 Affected Systems
- FortiVoice Enterprise
📦 What is this software?
Fortivoice by Fortinet
Fortivoice by Fortinet
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the FortiVoice system, including credential theft, data exfiltration, privilege escalation, and potential lateral movement to connected systems.
Likely Case
Unauthorized access to sensitive call records, user credentials, and configuration data leading to information disclosure and potential service disruption.
If Mitigated
Limited impact due to network segmentation, proper authentication controls, and monitoring preventing successful exploitation.
🎯 Exploit Status
Requires authenticated access to the FortiVoice web interface. Attackers need to craft specific HTTP/HTTPS requests to exploit the SQL injection.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.0.2 or 6.4.8 and later
Vendor Advisory: https://fortiguard.com/psirt/FG-IR-23-220
Restart Required: No
Instructions:
1. Log into FortiVoice web interface. 2. Navigate to System > Maintenance > Firmware. 3. Upload and install firmware version 7.0.2 or 6.4.8+. 4. Verify successful upgrade in System Information.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict access to FortiVoice web interface to trusted IP addresses only
Authentication Hardening
allImplement strong authentication policies and monitor for suspicious login attempts
🧯 If You Can't Patch
- Implement strict network segmentation to isolate FortiVoice systems from critical networks
- Enable comprehensive logging and monitoring for SQL injection attempts and unusual database queries
🔍 How to Verify
Check if Vulnerable:
Check FortiVoice firmware version in System > Dashboard > System Information. If version is between 7.0.0-7.0.1 or below 6.4.8, system is vulnerable.Check Version:
show system status (via CLI) or check System Information in web interfaceVerify Fix Applied:
Verify firmware version shows 7.0.2 or higher, or 6.4.8 or higher. Test web interface functionality remains operational.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed authentication attempts followed by successful login
- HTTP requests with SQL syntax in parameters
Network Indicators:
- Unusual database connection patterns from FortiVoice appliance
- HTTP/HTTPS requests containing SQL keywords to FortiVoice interface
SIEM Query:
source="fortivoice" AND (http_uri="*SELECT*" OR http_uri="*UNION*" OR http_uri="*INSERT*" OR http_uri="*DELETE*")