CVE-2023-37832
📋 TL;DR
CVE-2023-37832 is a vulnerability in Elenos ETG150 FM transmitter firmware that lacks rate limiting on authentication endpoints, allowing attackers to perform brute-force attacks to obtain user credentials. This affects organizations using the vulnerable transmitter version for broadcasting. Attackers could gain unauthorized access to the transmitter's management interface.
💻 Affected Systems
- Elenos ETG150 FM transmitter
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers obtain administrative credentials, gain full control of the transmitter, disrupt FM broadcasting operations, and potentially cause permanent damage to equipment.
Likely Case
Attackers obtain user credentials through brute-force attacks and gain unauthorized access to the transmitter management interface, allowing configuration changes or service disruption.
If Mitigated
With proper rate limiting and network controls, attackers cannot successfully brute-force credentials, maintaining system integrity and availability.
🎯 Exploit Status
The vulnerability requires no authentication to exploit. Attackers only need network access to the transmitter's management interface to perform brute-force attacks.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
Contact Elenos for firmware updates or security patches. Check their official website or support channels for security advisories regarding this CVE.
🔧 Temporary Workarounds
Implement Network-Level Rate Limiting
allUse network firewalls or WAFs to limit authentication attempts per IP address
Restrict Network Access
allLimit access to the transmitter management interface to trusted IP addresses only
🧯 If You Can't Patch
- Isolate the transmitter on a dedicated network segment with strict access controls
- Implement strong password policies and monitor authentication logs for brute-force attempts
🔍 How to Verify
Check if Vulnerable:
Check the firmware version via the transmitter's web interface or serial console. If version is v3.12, the system is vulnerable.Check Version:
Check via web interface at http://[transmitter-ip]/status or via serial console connectionVerify Fix Applied:
Test authentication endpoints with rapid login attempts. If rate limiting is properly implemented, subsequent attempts should be blocked or delayed.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts from single IP address
- Unusual authentication patterns outside normal hours
Network Indicators:
- High volume of HTTP POST requests to login endpoints
- Traffic patterns suggesting automated credential guessing
SIEM Query:
source="transmitter_logs" AND (event_type="auth_failure" AND count > 10 within 5 minutes)