CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:H
AI Score
Confidence
Low
EPSS
Percentile
9.0%
Successful exploitation of these vulnerabilities could allow the attacker to upload or transfer files of dangerous types that can be automatically processed within the product’s environment.
The following versions of Hitachi’s RTU500 series CMU Firmware are affected:
A vulnerability exists in the stb-language file handling that affects the RTU500 series product versions listed below. A malicious actor could print random memory content in the RTU500 system log, if an authorized user uploads a specially crafted stb-language file.
CVE-2024-1531 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.2 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:H).
A CVSS v4 score has also been calculated for CVE-2024-1531. A base score of 7.0 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N).
A vulnerability exists in the stb-language file handling that affects the RTU500 series product versions listed below. A malicious actor could enforce diagnostic texts being displayed as empty strings, if an authorized user uploads a specially crafted stb-language file.
CVE-2024-1532 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H).
A CVSS v4 score has also been calculated for CVE-2024-1532. A base score of 6.9 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N).
Hitachi Energy reported these vulnerabilities to CISA.
Hitachi Energy has released the following mitigations for CVE-2024-1531 and CVE-2024-1532:
Until the updates are made available, Hitachi Energy recommends the following general mitigation factors/workarounds for the products with RTU500 series CMU firmware Versions 12.0.1 - 12.0.14, 12.2.1 - 12.2.11, 12.4.1 - 12.4.11, 12.6.1 - 12.6.9, 13.4.1 - 13.4.4, and 13.5.1 - 13.5.3 to address the vulnerabilities CVE-2024-1531 and CVE-2024-1532:
For more information, see Hitachi Energy’s Security Advisories:
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/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.
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/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.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-1531
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-1531
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-1532
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-1532
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cwe.mitre.org/data/definitions/434.html
cwe.mitre.org/data/definitions/434.html
github.com/cisagov/CSAF
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
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www.cisa.gov/resources-tools/resources/ics-recommended-practices
www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
www.cisa.gov/topics/industrial-control-systems
www.cisa.gov/topics/industrial-control-systems
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
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