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AUSCERT External Security Bulletin Redistribution
Advisory (ICSA-18-151-03) Yokogawa STARDOM Controllers
1 June 2018
AusCERT Security Bulletin Summary
Product: Yokogawa STARDOM Controllers
Operating System: Network Appliance
Impact/Access: Administrator Compromise -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
CVE Names: CVE-2018-10592
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Advisory (ICSA-18-151-03) Yokogawa STARDOM Controllers
Original release date: May 31, 2018
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1. EXECUTIVE SUMMARY
CVSS v3 9.8
ATTENTION: Exploitable remotely/low skill level to exploit
Equipment: STARDOM Controllers
Vulnerability: Hard-coded Credentials
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to gain
access to the affected device, which could result in remote code execution.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
Yokogawa reports the vulnerability affects the following STARDOM Controller
FCJ (R4.02 and prior),
FCN-100 (R4.02 and prior),
FCN-RTU (R4.02 and prior), and
FCN-500 (R4.02 and prior).
3.2 VULNERABILITY OVERVIEW
3.2.1 USE OF HARD-CODED CREDENTIALS CWE-798
The affected controllers utilize hard-coded credentials that could allow an
attacker to gain unauthorized administrative access to the device, which could
result in remote code execution.
CVE-2018-10592 has been assigned to this vulnerability. A CVSS v3 base score
of 9.8 has been calculated; the CVSS vector string is
o Critical Infrastructure Sectors: Critical Manufacturing, Energy, and Food
o Countries/Areas Deployed: Worldwide
o Company Headquarters Location: Japan
VDLab of Venustech and Dongfang Electric Corporation (DEC) reported this
vulnerability to NCCIC.
Yokogawa has recommended users upgrade the FCN/FCJ software to Version R4.10
or later and reports that the vulnerability is remediated in that version.
Yokogawa strongly suggests all users introduce appropriate security measures
not only for the vulnerability identified but also to the overall system.
Yokogawa recommends users with questions related to this report and
information on obtaining the updates, please utilize the Product Inquiry
contact details at the following location:
Yokogawas Security Advisory Report, YSAR-18-0004: Vulnerability of hardcoded
password in STARDOM controllers, and other Yokogawa security reports are
available at the following URL:
NCCIC recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:
o Minimize and restrict remote device access where remote access is not
o Minimize network exposure for all control system devices and/or systems,
and ensure that they are not accessible from the Internet.
o Locate control system networks and remote devices behind firewalls, and
isolate them from the business network.
o When remote access is required, use secure methods, such as Virtual Private
Networks (VPNs), recognizing that VPNs may have vulnerabilities and should
be updated to the most current version available. Also recognize that VPN
is only as secure as the connected devices.
NCCIC reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
NCCIC also provides a section for control systems security recommended
practices on the ICS-CERT web page. Several recommended practices are
available for reading and download, including Improving Industrial Control
Systems Cybersecurity with Defense-in-Depth Strategies.
Additional mitigation guidance and recommended practices are publicly
available on the ICS-CERT website in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to NCCIC for
tracking and correlation against other incidents.
No known public exploits specifically target this vulnerability.
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