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AUSCERT External Security Bulletin Redistribution
Advisory (icsa-21-210-01) Hitachi ABB Power Grids eSOMS
30 July 2021
AusCERT Security Bulletin Summary
Product: Hitachi ABB Power Grids eSOMS
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
CVE Names: CVE-2021-35527
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ICS Advisory (ICSA-21-210-01)
Hitachi ABB Power Grids eSOMS
Original release date: July 29, 2021
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 7.5
o ATTENTION: Low attack complexity
o Vendor: Hitachi ABB Power Grids
o Equipment: eSOMS
o Vulnerability: Insufficiently Protected Credentials
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow access to user
credentials that are stored by the browser.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
Hitachi ABB Power Grids reports this vulnerability affects the following
o eSOMS: All Versions 6.3 and prior
3.2 VULNERABILITY OVERVIEW
3.2.1 INSUFFICIENTLY PROTECTED CREDENTIALS CWE-522
The web application password field allows a browser to store user credentials,
which may allow an attacker who gains control of the users' system, or
successfully exploits a cross site scripting vulnerability in another
application, to capture stored passwords.
CVE-2021-35527 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/
o CRITICAL INFRASTRUCTURE SECTORS: Energy
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Switzerland
Hitachi ABB Power Grids reported this vulnerability to CISA.
Hitachi ABB Power Grids recommends users update to Version 6.3.1 or later.
Hitachi ABB Power Grids also recommends implementing security best practices
and firewall configurations, which help protect a process control network from
attacks that originate from outside the network. Such practices include:
o Ensuring critical applications and 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.
o Firewalls should be configured to have the minimum number of ports exposed
and open ports should be justified and documented.
o Critical systems should not be used for Internet surfing, instant
messaging, or receiving e-mails.
o Portable computers and removable storage media should be carefully scanned
for viruses before they are connected to a control system.
o It is important to implement robust security awareness training to ensure
users can identify common attacks or content such as phishing emails or
For more information on this issue, see the Hitachi ABB Power Grid Security
CISA recommends users take the following measures to protect themselves from
social engineering attacks:
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
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 is not exploitable remotely.
For any questions related to this report, please contact the CISA at:
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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