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AUSCERT External Security Bulletin Redistribution
ESB-2021.4037
Advisory (icsa-21-334-05) Hitachi Energy Retail Operations and CSB Software
1 December 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Retail Operations
Counterparty Settlement and Billing
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Modify Arbitrary Files -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-35528
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-21-334-05
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ICS Advisory (ICSA-21-334-05)
Hitachi Energy Retail Operations and CSB Software
Original release date: November 30, 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 7.2
o ATTENTION: High attack complexity
o Vendor: Hitachi Energy
o Equipment: Retail Operations and Counterparty Settlement and Billing (CSB)
Product
o Vulnerability: Improper Access Control
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow unauthorized access
to data and modification of data inside the affected product.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
Hitachi Energy reports the following versions of Retail Operations and CSB
software systems are affected:
o Retail Operations: Version 5.7.3 and prior
o Counterparty Settlement and Billing (CSB): Version 5.7.3 and prior
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER ACCESS CONTROL CWE-284
A flaw in the application authentication and authorization mechanism that
depends on local validation of the session identifier allows an unauthorized,
signed Java Applet JAR file to be executed.
CVE-2021-35528 has been assigned to this vulnerability. A CVSS v3 base score of
7.2 has been calculated; the CVSS vector string is ( AV:L/AC:H/PR:H/UI:N/S:C/
C:H/I:H/A:N ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Energy
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Switzerland
3.4 RESEARCHER
Hitachi Energy reported this vulnerability to CISA.
4. MITIGATIONS
Hitachi Energy recommends the following actions to mitigate this issue:
o Retail Operations v5.7.3 and prior: Upgrade to v5.7.3.1
o Counterparty Settlement and Billing (CSB) v5.7.3: Upgrade to v5.7.3.1
Hitachi Energy recommends the following security practices and firewall
configurations in order to help protect a user's computer from attack:
o Harden the operating system.
o Routinely monitor the application process log for unrecognized user
sessions originating outside of the Retail Operations application.
Please see the Hitachi Energy Retail Operations and CSB advisories for
additional mitigation and update information.
For additional information and support, users should contact the product
provider or Hitachi Energy service organization .
CISA also 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
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 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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