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 1. Home
 2. News & Events
 3. Cybersecurity Advisories
 4. ICS Advisory

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ICS Advisory


HITACHI ENERGY TROPOS DEVICES SERIES 1400/2400/6400

Release Date
December 17, 2024
Alert Code
ICSA-24-352-02
Related topics:
Industrial Control System Vulnerabilities, Industrial Control Systems


View CSAF(link is external)


1. EXECUTIVE SUMMARY

 * CVSS v3 5.3
 * ATTENTION: Exploitable remotely/low attack complexity
 * Vendor: Hitachi Energy
 * Equipment: TropOS Devices Series 1400/2400/6400
 * Vulnerability: Improper Input Validation


2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to cause a
denial-of-service condition.


3. TECHNICAL DETAILS


3.1 AFFECTED PRODUCTS

The following products of Hitachi Energy are affected:

 * TropOS devices series 1400/2400/6400: All versions prior to 8.9.6


3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER INPUT VALIDATION CWE-20(LINK IS EXTERNAL)

The monlist feature in ntp_request.c in ntpd in NTP before 4.2.7p26 allows
remote attackers to cause a denial of service (traffic amplification) via forged
(1) REQ_MON_GETLIST or (2) REQ_MON_GETLIST_1 requests, as exploited in the wild
in December 2013.

CVE-2013-5211(link is external) has been assigned to this vulnerability. A CVSS
v3 base score of 5.3 has been assigned; the CVSS vector string is
(CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L(link is external)).


3.3 BACKGROUND

 * CRITICAL INFRASTRUCTURE SECTORS: Energy
 * COUNTRIES/AREAS DEPLOYED: Worldwide
 * COMPANY HEADQUARTERS LOCATION: Switzerland


3.4 RESEARCHER

Hitachi Energy PSIRT reported this vulnerability to CISA.


4. MITIGATIONS

Hitachi Energy has identified the following specific workarounds and mitigations
users can apply to reduce risk:

 * Update to Version 8.9.6 or later when available
 * Hitachi Energy recommends users implement countermeasures for DoS with proper
   firewall rule sets and filters, as well as to apply mitigation as described
   in the Mitigation Factors/Workarounds
   Section.

Hitachi Energy recommends users follow recommended security practices and
firewall configurations, which can help protect a process control network from
attacks that originate from outside the network. Such practices include that
process control systems are physically protected from direct access by
unauthorized personnel, have no direct connections to the Internet, and are
separated from other networks by means of a firewall system that has a minimal
number of ports exposed, and others that have to be evaluated case by case.
Process control systems should not be used for Internet surfing, instant
messaging, or receiving e-mails. Portable computers and removable storage media
should be carefully scanned for viruses before they are connected to a control
system.

For more information, see Hitachi Energy Cybersecurity Advisory "DoS
Vulnerability in Hitachi Energy's TropOS core routers and edge nodes."(link is
external)

CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability, such as:

 * Minimize network exposure for all control system devices and/or systems,
   ensuring they are not accessible from the Internet.
 * Locate control system networks and remote devices behind firewalls and
   isolating them from business networks.
 * When remote access is required, use more secure methods, such as Virtual
   Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be
   updated to the most recent version available, and are only as secure as the
   connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment
prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices
on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense
best practices are available for reading and download, including Improving
Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies
for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available
on the ICS webpage at cisa.gov in the technical information paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies.

Organizations observing suspected malicious activity should follow established
internal procedures and report findings to CISA for tracking and correlation
against other incidents.

No known public exploitation specifically targeting this vulnerability has been
reported to CISA at this time.


5. UPDATE HISTORY

 * December 17, 2024: Initial Publication

This product is provided subject to this Notification and this Privacy &
Use policy.


VENDOR

 * Hitachi Energy


TAGS

Sector: Energy Sector
Topics: Industrial Control System Vulnerabilities, Industrial Control Systems


PLEASE SHARE YOUR THOUGHTS

We recently updated our anonymous product survey; we’d welcome your feedback.


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