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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1786
         Advisory (ICSA-19-136-02) Fuji Electric Alpha7 PC Loader
                                17 May 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Fuji Electric Alpha7 PC Loader
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-10975  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-19-136-02

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Advisory (ICSA-19-136-02)

Fuji Electric Alpha7 PC Loader

Original release date: May 16, 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
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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 3.3
  o ATTENTION: Low skill level to exploit
  o Vendor: Fuji Electric
  o Equipment: Alpha7 PC Loader
  o Vulnerability: Out-of-bounds Read

2. RISK EVALUATION

Successful exploitation of this vulnerability could crash the device.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Alpha7 PC Loader, a motor controller, are affected:

  o Alpha7 PC Loader Versions 1.1 and prior

3.2 VULNERABILITY OVERVIEW

3.2.1 OUT-OF-BOUNDS READ CWE-125

An out-of-bounds read vulnerability has been identified, which may crash the
system.

CVE-2019-10975 has been assigned to this vulnerability. A CVSS v3 base score of
3.3 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/
C:N/I:N/A:L ).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: Japan

3.4 RESEARCHER

kimiya of 9SG Security Team, working with Trend Micro Zero Day Initiative,
reported this vulnerability to NCCIC.

4. MITIGATIONS

Fuji Electric has released Version 1.2 of the software, which can be downloaded
from:

https://americas.fujielectric.com/engineers-room/online-tools/

NCCIC recommends that users take the following measures to protect themselves
from social engineering attacks:

  o Do not load files from untrusted sources.
  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.

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-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .

Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to NCCIC for tracking
and correlation against other incidents.

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