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AUSCERT External Security Bulletin Redistribution
ESB-2021.4098
Advisory (icsa-21-336-07) Hitachi Energy PCM600 Update Manager
3 December 2021
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AusCERT Security Bulletin Summary
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Product: Hitachi Energy PCM600 Update Manager
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-22278
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-21-336-07
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ICS Advisory (ICSA-21-336-07)
Hitachi Energy PCM600 Update Manager
Original release date: December 02, 2021
Legal Notice
All information products included in https://us-cert.cisa.gov/ics are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For more
information about TLP, see https://us-cert.cisa.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 6.7
o Vendor: Hitachi Energy
o Equipment: PCM600 Update Manager
o Vulnerability: Improper Certificate Validation
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to bypass
the certificate validation and install an untrusted software package.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of PCM600 Update Manager, an update manager for the
PCM600 software (a protection and control IED manager), are affected:
o PCM600 Update Manager: Versions 2.1, 2.1.0.4, 2.2, 2.2.0.1, 2.2.0.2,
2.2.0.23, 2.3.0.60, 2.4.20041.1, and 2.4.20119.2
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER CERTIFICATE VALIDATION CWE-295
This vulnerability exists due to a logic error in the certificate validation in
the affected product. An attacker with administrator rights could exploit this
vulnerability by creating software packages and signing those packages with
specially crafted certificates, thereby pointing the PCM600 update server
location to a different location. The validation flaw causes untrusted software
packages to be installed using PCM600 Update Manager.
CVE-2021-22278 has been assigned to this vulnerability. A CVSS v3 base score of
6.7 has been calculated; the CVSS vector string is ( AV:L/AC:H/PR:L/UI:R/S:U/
C:H/I:H/A:H ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Energy
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Switzerland
3.4 RESEARCHER
A Department of Energy CyTRICS researcher from Idaho National Laboratory
reported this vulnerability to Hitachi Energy.
4. MITIGATIONS
Hitachi Energy recommends updating the PCM600 Update Manager to Update Manager
v2.4.21218.1. This can be done by checking directly on the recommended updates
in the PCM600 Update Manager or by downloading it from the Hitachi Energy
website .
Please see Hitachi Energy advisory 8DBD000056 for additional mitigation and
update information.
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:
o Ensure the least-privilege user principle is followed.
o Do not click web links or open unsolicited attachments in email messages.
o Refer to Recognizing and Avoiding Email Scams for more information on
avoiding email scams.
o Refer to Avoiding Social Engineering and Phishing Attacks for more
information on social engineering attacks.
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 us-cert.cisa.gov . 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 webpage on us-cert.cisa.gov in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to CISA for tracking
and correlation against other incidents.
No known public exploits specifically target this vulnerability. This
vulnerability has a high attack complexity. This vulnerability is not
exploitable remotely.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
CISA continuously strives to improve its products and services. You can help by
choosing one of the links below to provide feedback about this product.
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