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AUSCERT External Security Bulletin Redistribution
ESB-2019.2902
Advisory (ICSA-19-213-02) Fuji Electric FRENIC Loader
2 August 2019
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AusCERT Security Bulletin Summary
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Product: Fuji Electric FRENIC Loader
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-13512
Original Bulletin:
https://www.us-cert.gov/ics/advisories/icsa-19-213-02
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ICS Advisory (ICSA-19-213-02)
Fuji Electric FRENIC Loader
Original release date: August 01, 2019
Legal Notice
All information products included in http://ics-cert.us-cert.gov 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 http://www.us-cert.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 4.4
o ATTENTION: Low skill level to exploit
o Vendor: Fuji Electric
o Equipment: FRENIC Loader
o Vulnerability: Out-of-Bounds Read
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow information
disclosure.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of FRENIC Loader, an AC drive, are affected:
o FRENIC Loader 3.5.0.0 and prior
3.2 VULNERABILITY OVERVIEW
3.2.1 OUT-OF-BOUNDS READ CWE-125
The affected product is vulnerable to an out-of-bounds read vulnerability,
which may allow an attacker to read limited information from the device.
CVE-2019-13512 has been assigned to this vulnerability. A CVSS v3 base score of
4.4 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:L/
I:N/A:L ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Japan
3.4 RESEARCHER
Trend Micro's Zero Day Initiative working with kimiya of 9SG Security Team
reported this vulnerability to CISA.
4. MITIGATIONS
Fuji Electric has released a new version of FRENIC Loader that addresses the
reported vulnerability.
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:
o Minimize network exposure for all control system devices and/or systems,
and ensure that they are not accessible from the Internet .
o Locate control system networks and remote devices behind firewalls, and
isolate them from the business network.
o When remote access is required, use secure methods, such as Virtual Private
Networks (VPNs), recognizing that VPNs may have vulnerabilities and should
be updated to the most current version available. Also recognize that VPN
is only as secure as the connected devices.
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.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.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.
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.
No known public exploits specifically target this vulnerability. This
vulnerability is not exploitable remotely.
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