External risk intelligence

Echelon SmartServer and i.LON Devices Allow Unencrypted Connections.

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2018-8855

Certain Echelon devices allow unencrypted web connections and insecure firmware updates. This presents a risk of unauthorized access and potential manipulation of device operations, impacting organizational data confidentiality and operational integrity. Attackers could exploit these weaknesses to compromise industrial

4Halo Surface Signal

Echelon Smartserver 1 Firmware

before 4.11.007

External exposure likelihood

Halo Surface Signal score for CVE-2018-8855

The affected devices are Industrial Control System gateways and servers designed to manage network communications. These products are typically deployed to bridge internal industrial networks with external or management networks, making their web and FTP interfaces commonly reachable as edge services in industrial facility deployments.

Horizon Alert

Summary of the vulnerability and why it matters

Certain Echelon devices, including SmartServer 1, SmartServer 2, i.LON 100, and i.LON 600, are vulnerable due to unencrypted web connections and insecure configuration and firmware updates. This allows unauthorized actors to potentially access sensitive data or gain control over device operations. The primary impact is a heightened risk to operational integrity and data confidentiality within organizations utilizing these systems.

  • Vulnerable Echelon devices
  • Unencrypted web and FTP services
  • Compromised device integrity and data

Attack Path

How an attacker could exploit the issue

The identified vulnerabilities present a pathway for unauthorized access and control over affected Echelon devices. These devices, by default, permit unencrypted web connections and can receive configuration and firmware updates via insecure FTP. An attacker could exploit these weaknesses to gain access and potentially alter device configurations or introduce malicious code. The impact on an organization includes compromised system integrity and potential disruption of industrial operations.

  • Unencrypted web connections are exposed.
  • Attackers access via the internet.
  • Insecure FTP triggers control.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability affects Echelon SmartServer and i.LON devices, which are often used in industrial control systems. The devices allow unencrypted web connections and can receive configuration and firmware updates through insecure FTP. This could enable unauthorized access and manipulation of industrial operations. The severity indicates a significant risk to operational continuity and data integrity.

  • Likely attacker skill: Low
  • Required access: Network access
  • Business risk: High urgency

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability affects Echelon SmartServer and i.LON devices, allowing unencrypted web connections and insecure configuration/firmware updates via FTP. Attackers could exploit these weaknesses to gain unauthorized access and potentially compromise connected systems. The business risk includes unauthorized access to sensitive operational data and potential disruption of industrial processes.

  • Identify Echelon SmartServer and i.LON devices.
  • Restrict network access to affected devices.
  • Apply vendor updates and verify fixes.
  • Monitor for unusual network activity.

Frequently asked questions

What are Echelon SmartServer and i.LON devices and what are their functions in industrial control systems?

Echelon SmartServer 1, SmartServer 2, i.LON 100, and i.LON 600 are devices integral to industrial control systems. They function as gateways or servers, facilitating network communications and bridging various industrial networks to ensure seamless operation and management.

What is CWE-319 in the context of CVE-2018-8855 for Echelon devices?

CVE-2018-8855 is associated with CWE-319, a weakness indicating that sensitive information is transmitted without encryption. For these Echelon devices, this unencrypted transmission occurs over their web connections and during firmware updates performed via FTP.

How can an attacker exploit the unencrypted web connections and insecure FTP updates on Echelon devices?

An attacker can exploit the default unencrypted web connections and insecure FTP for configuration and firmware updates on Echelon devices. This allows them to potentially access sensitive data or gain unauthorized control over the device's operations.

What is the relevance of CVE-2018-8855 for industrial control systems and why is it considered an external threat?

This vulnerability impacts Echelon devices commonly used in industrial control systems, which manage critical network communications. The CVSS v3.1 attack vector is 'Network', meaning an attacker can exploit this weakness remotely, classifying it as an external threat.

What practical steps should be taken to mitigate the risks associated with these Echelon device vulnerabilities?

Organizations should identify all affected Echelon SmartServer and i.LON devices, restrict network access to them, and promptly apply vendor-provided updates. Monitoring for unusual network activity is also recommended to detect potential compromises.

References