ICSA-17-061-01_Eaton xComfort Ethernet Communication Interface
Monitor7.5ICS-CERT ICSA-17-061-01Mar 2, 2017
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary
The xComfort Ethernet Communication Interface (ECI) contains an improper access control vulnerability (CWE-284) that allows remote attackers to read sensitive data without authentication. The affected versions are xComfort ECI version 1.07 and earlier. An attacker can extract encryption keys, passwords, and system configuration information by sending network requests to the device. Eaton has not released a firmware patch and has marked this product as no fix planned.
What this means
What could happen
An attacker with network access to the xComfort Ethernet Communication Interface (ECI) can read sensitive data such as encryption keys, passwords, or configuration information without authentication, potentially exposing the entire xComfort home automation system to further compromise.
Who's at risk
Building automation and facilities management operators running Eaton xComfort systems should be concerned. This affects any facility using xComfort Ethernet Communication Interface (ECI) devices for HVAC, lighting, access control, or energy management. Particular attention needed if the ECI is connected to corporate networks or accessible from multiple subnets.
How it could be exploited
An attacker sends network requests to the xComfort ECI on its management or API ports. The device fails to properly enforce access controls on sensitive data endpoints, allowing the attacker to retrieve encryption keys, credentials, or configuration details without providing valid authentication credentials.
Prerequisites
- Network access to the xComfort ECI device (reachable from the attacker's network segment)
- No authentication credentials required
remotely exploitableno authentication requiredlow complexityno patch available
Exploitability
Low exploit probability (EPSS 0.2%)
Affected products (1)
ProductAffected VersionsFix Status
xComfort ECI:≤ 1.07No fix (EOL)
Remediation & Mitigation
0/4
Do now
0/2HARDENINGImplement network segmentation and firewall rules to restrict access to the xComfort ECI to authorized engineering workstations and management systems only
WORKAROUNDConsider disabling remote management features on the xComfort ECI if not actively used for operations
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HOTFIXUpgrade xComfort ECI firmware to version 1.08 or later if available from Eaton
Mitigations - no patch available
0/1xComfort ECI: has reached End of Life. The vendor will not release a patch. Apply the following compensating controls:
HARDENINGMonitor network traffic to and from the xComfort ECI for unauthorized access attempts
CVEs (1)
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