7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.013 Low
EPSS
Percentile
85.9%
Successful exploitation of these vulnerabilities could cause affected modules to stop working.
Hitachi Energy reports these vulnerabilities affect open-source software (OpenLDAP and OpenSSL) used by the following Gateway Station (GWS) versions:
3.2.1 NULL POINTER DEREFERENCE CWE-476
A NULL pointer dereference was found in affected versions of OpenLDAP. An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, causing a denial-of-service condition on the user authentication function.
Note: Local authentication will continue to work; the authentication service is not installed by default.
CVE-2020-25692 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/C:N/I:N/A:H).
3.2.2 INFINITE LOOP CWE-835
A vulnerability exists in the OpenSSL’s BN_mod_sqrt() function, which computes a modular square root containing a bug that can cause it to loop forever for non-prime moduli. Internally, this function is used when parsing certificates containing elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. Successful exploitation may cause a denial-of-service condition.
CVE-2022-0778 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/C:N/I:N/A:H).
Hitachi Energy reported these vulnerabilities to CISA.
Hitachi Energy has created an update to address the reported vulnerabilities and recommends users update to at least GWS version 3.3.0.0
For CVE-2020-25692, the vulnerability impacts GWS if the authentication service is installed. It is not installed by default but is required during the installation process of GWS, or installed manually later. Authentication Service (previously ABB Authentication Service) is only needed when GWS users are authenticated using centralized SDM600 user account management.
Hitachi Energy recommends the following general mitigation factors and security practices:
For more information, see Hitachi security advisory 8DBD000118.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 at cisa.gov/ics. 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.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics 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.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-25692
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-0778
cisa.gov/ics
cisa.gov/ics
cwe.mitre.org/data/definitions/476.html
cwe.mitre.org/data/definitions/835.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
search.abb.com/library/Download.aspx?DocumentID=8DBD000118
twitter.com/CISAgov
twitter.com/intent/tweet?text=Hitachi%20Energy%20Gateway%20Station+https://www.cisa.gov/news-events/ics-advisories/icsa-23-059-01
us-cert.cisa.gov/ics/Recommended-Practices
us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-23-059-01&title=Hitachi%20Energy%20Gateway%20Station
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-23-059-01
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-23-059-01
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Hitachi%20Energy%20Gateway%20Station&body=www.cisa.gov/news-events/ics-advisories/icsa-23-059-01
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.013 Low
EPSS
Percentile
85.9%