CVE-2017-14004
📋 TL;DR
GE GEMNet License server (EchoServer) uses default or hard-coded credentials, allowing remote attackers to bypass authentication and gain unauthorized access to affected devices. This affects all current versions of the software, primarily impacting industrial control systems using GE healthcare equipment.
💻 Affected Systems
- GE GEMNet License server (EchoServer)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of medical device licensing servers, potential disruption of healthcare services, unauthorized access to sensitive medical systems, and possible manipulation of device functionality.
Likely Case
Unauthorized access to license servers, potential theft of sensitive configuration data, and disruption of medical device licensing services.
If Mitigated
Limited impact with proper network segmentation and access controls, though credential exposure remains a concern.
🎯 Exploit Status
Exploitation requires network access to the EchoServer port (typically 8000). No special tools needed beyond basic network scanning and credential testing.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in advisory
Vendor Advisory: https://ics-cert.us-cert.gov/advisories/ICSMA-18-037-02
Restart Required: No
Instructions:
1. Contact GE Healthcare for updated software or configuration guidance. 2. Change all default credentials immediately. 3. Implement network segmentation per ICS-CERT recommendations.
🔧 Temporary Workarounds
Credential Hardening
allChange all default and hard-coded credentials to strong, unique passwords.
Network Segmentation
allIsolate GEMNet servers from untrusted networks using firewalls and VLANs.
🧯 If You Can't Patch
- Implement strict network access controls - allow only trusted IP addresses to connect to EchoServer port (typically 8000).
- Monitor authentication logs for failed login attempts and credential testing patterns.
🔍 How to Verify
Check if Vulnerable:
Attempt to authenticate to the EchoServer service (port typically 8000) using known default credentials. Network scanning for open port 8000 on medical network segments.Check Version:
Check device documentation or contact GE Healthcare for version identification methods.Verify Fix Applied:
Verify that default credentials no longer work. Confirm strong passwords are in use. Validate network segmentation prevents unauthorized access.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts, successful logins from unexpected sources, multiple authentication attempts from single IP.
Network Indicators:
- Unexpected connections to port 8000, traffic patterns suggesting credential testing.
SIEM Query:
source_port:8000 AND (event_type:authentication_failure OR event_type:authentication_success)