Fuji Electric Alpha7 PC Loader

1. EXECUTIVE SUMMARY

• CVSS v3 3.3

• ATTENTION: Low skill level to exploit

• **Vendor:**Fuji Electric

• **Equipment:**Alpha7 PC Loader

• **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:

• 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

• **CRITICAL INFRASTRUCTURE SECTORS:**Critical Manufacturing
• **COUNTRIES/AREAS DEPLOYED:**Worldwide
• 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://felib.fujielectric.co.jp/download/search2.htm?dosearch=1&site=global&lang=en&documentGroup=software

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

• Do not load files from untrusted sources.
• Do not click web links or open unsolicited attachments in email messages.
• Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
• 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.

No known public exploits specifically target this vulnerability. This vulnerability is not exploitable remotely.