CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
81.6%
CVSS v3 9.8
ATTENTION: Exploitable remotely/low skill level to exploit/public exploits are available
Vendor: Fuji Electric
Equipment: FRENIC Loader, FRENIC-Mini (C1), FRENIC-Mini (C2), FRENIC-Eco, FRENIC-Multi, FRENIC-MEGA, FRENIC-Ace
Vulnerabilities: Buffer Over-read, Out-of-bounds Read, Stack-based Buffer Overflow
This updated advisory is a follow-up to the original advisory titled ICSA-18-270-03 Fuji Electric FRENIC Devices that was published September 27, 2018, on the NCCIC/ICS-CERT website.
Successful exploitation of these vulnerabilities could allow for arbitrary remote code execution affecting the availability of the device.
The following versions of FRENIC Loader, FRENIC-Mini (C1), FRENIC-Mini (C2), FRENIC-Eco, FRENIC-Multi, FRENIC-MEGA, FRENIC-Ace, HVAC drive devices, are affected:
4.2.1 BUFFER OVER-READ CWE-126
A buffer over-read vulnerability may allow remote code execution on the device.
CVE-2018-14790 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
4.2.2 OUT-OF-BOUNDS READ CWE-125
The program does not properly parse FNC files that may allow for information disclosure.
CVE-2018-14798 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
4.2.3 STACK-BASED BUFFER OVERFLOW CWE-121
The program does not properly check user-supplied comments which may allow for arbitrary remote code execution.
CVE-2018-14802 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
Michael Flanders and Ghirmay Desta working with Trend Microβs Zero Day Initiative, reported these vulnerabilities to NCCIC.
--------- Begin Update A Part 1 of 1 --------
Fuji Electric has released a new version of firmware for the affected FRENIC Loader products that can be found at:
--------- End Update A Part 1 of 1 --------
NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. 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-CERT website in the Technical Information Paper, ICS-TIP-12-146-01BβTargeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to NCCIC for tracking and correlation against other incidents.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-14790
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-14798
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-14802
cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?product=https://www.cisa.gov/news-events/ics-advisories/icsa-18-270-03
cwe.mitre.org/data/definitions/121.html
cwe.mitre.org/data/definitions/125.html
cwe.mitre.org/data/definitions/126.html
felib.fujielectric.co.jp/download/search2.htm?dosearch=1&siteswitch=1&product1_id=P10008&product2_id=&product3_id=&series_id=&documentGroup=&material1_id=&material2_id=&stopproduct=&site=america&lang=en
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CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
81.6%