CVE-2018-11682
📋 TL;DR
CVE-2018-11682 involves hardcoded support credentials in Lutron IoT devices that allow attackers to gain administrative control through TELNET sessions. This affects Lutron lighting control systems using Stanza integration protocol revisions M through Y. The vendor disputes the severity, claiming the access only allows lighting control rather than full system compromise.
💻 Affected Systems
- Lutron lighting control systems with Stanza integration
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain complete administrative control of IoT devices, potentially enabling lateral movement to other systems, disruption of critical lighting infrastructure, or data exfiltration.
Likely Case
Unauthorized users gain access to lighting control systems, allowing them to manipulate lighting settings, potentially causing operational disruptions or safety issues in controlled environments.
If Mitigated
With proper network segmentation and access controls, impact is limited to lighting control manipulation without broader system compromise.
🎯 Exploit Status
Exploitation requires network access to TELNET service on affected devices
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: http://www.lutron.com/TechnicalDocumentLibrary/040249.pdf
Restart Required: No
Instructions:
No official patch available. Consult vendor documentation for protocol updates or configuration changes.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Lutron devices on separate VLANs with strict firewall rules
Disable TELNET Service
allDisable TELNET service if not required for operations
🧯 If You Can't Patch
- Implement strict network access controls to limit TELNET access to authorized IPs only
- Monitor TELNET authentication attempts and failed logins
🔍 How to Verify
Check if Vulnerable:
Attempt TELNET connection to Lutron device on default port and test default credentialsCheck Version:
Check device firmware version through Lutron interface or documentationVerify Fix Applied:
Verify TELNET service is disabled or requires proper authentication📡 Detection & Monitoring
Log Indicators:
- Failed TELNET authentication attempts
- Successful TELNET logins from unusual sources
Network Indicators:
- TELNET traffic to Lutron devices from unauthorized sources
- Unusual TELNET command patterns
SIEM Query:
source_port:23 AND (destination_ip:LUTRON_DEVICE_IP OR destination_hostname:*lutron*)🔗 References
- http://sadfud.me/explotos/CVE-2018-11629
- http://www.lutron.com/TechnicalDocumentLibrary/040249.pdf
- https://reversecodes.wordpress.com/2018/06/02/0-day-tomando-el-control-de-las-instalaciones-de-la-nasa-en-cabo-canaveral/
- http://sadfud.me/explotos/CVE-2018-11629
- http://www.lutron.com/TechnicalDocumentLibrary/040249.pdf
- https://reversecodes.wordpress.com/2018/06/02/0-day-tomando-el-control-de-las-instalaciones-de-la-nasa-en-cabo-canaveral/
