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 3. Cybersecurity Advisories
 4. ICS Advisory

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ICS Advisory


ICONICS AND MITSUBISHI ELECTRIC PRODUCTS

Release Date
August 17, 2023
Alert Code
ICSA-23-229-01



1. EXECUTIVE SUMMARY

 * CVSS v3 5.9
 * ATTENTION: Exploitable remotely
 * Vendor: ICONICS, Mitsubishi Electric
 * Equipment: ICONICS Product Suite
 * Vulnerabilities: Buffer Overflow, Out-of-Bounds Read, Observable Timing
   Discrepancy, Double Free, and NULL Pointer Dereference


2. RISK EVALUATION

Successful exploitation of these vulnerabilities could result in information
disclosure, denial-of-service, or remote code execution.


3. TECHNICAL DETAILS


3.1 AFFECTED PRODUCTS

ICONICS reports these vulnerabilities affect the following products using
OpenSSL:

 * ICONICS Suite including GENESIS64, Hyper Historian, AnalytiX, and MobileHMI:
   Version 10.97.2


3.2 VULNERABILITY OVERVIEW

3.2.1 CLASSIC BUFFER OVERFLOW CWE-120(link is external)

A denial of service and potential crash vulnerability due to a buffer overrun
condition exists in the OpenSSL library used in the ICONICS Suite. This
vulnerability is in the X.509 certificate name constraint checking.

CVE-2022-3602 has been assigned to this vulnerability. A CVSS v3 base score of
5.9 has been calculated; the CVSS vector string is
(AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H(link is external)).

3.2.2 CLASSIC BUFFER OVERFLOW CWE-120(link is external)

A denial-of-service vulnerability due to a buffer overrun condition exists in
the OpenSSL library used in the ICONICS Suite. This vulnerability is in the
X.509 certificate verification.

CVE-2022-3786 has been assigned to this vulnerability. A CVSS v3 base score of
5.9 has been calculated; the CVSS vector string is
(AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H(link is external)).

3.2.3 OUT-OF-BOUNDS READ CWE-125(link is external)

A denial-of-service vulnerability due to an out of bounds read condition exists
in the OpenSSL library used in the ICONICS Suite. This vulnerability is in the
X.509 certificate verification.

CVE-2022-4203 has been assigned to this vulnerability. A CVSS v3 base score of
4.4 has been calculated; the CVSS vector string is
(AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H(link is external)).

3.2.4 OBSERVABLE TIMING DISCREPANCY CWE-208(link is external)

An information disclosure vulnerability due to an observable timing discrepancy
exists in the OpenSSL library used in the ICONICS Suite. This vulnerability is
in the RSA decryption implementation.

CVE-2022-4304 has been assigned to this vulnerability. A CVSS v3 base score of
5.9 has been calculated; the CVSS vector string is
(AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N(link is external)).

3.2.5 DOUBLE FREE CWE-415(link is external)

A denial of service and potential crash vulnerability due to a double free
condition exists in the OpenSSL library used in the ICONICS Suite. This
vulnerability is in the reading of a PEM file.

CVE-2022-4450 has been assigned to this vulnerability. A CVSS v3 base score of
5.9 has been calculated; the CVSS vector string is
(AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H(link is external)).

3.2.6 NULL POINTER DEREFERENCE CWE-476(link is external)

A denial of service and potential crash vulnerability due to a NULL Pointer
dereference exists in the OpenSSL library used in the ICONICS Suite. This
vulnerability can occur when signatures are being verified.

CVE-2023-0401 has been assigned to this vulnerability. A CVSS v3 base score of
5.9 has been calculated; the CVSS vector string is
(AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H(link is external)).


3.3 BACKGROUND

 * CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
 * COUNTRIES/AREAS DEPLOYED: Worldwide
 * COMPANY HEADQUARTERS LOCATION: ICONICS is headquartered in the United States.
   Mitsubishi Electric is headquartered in Japan.


3.4 RESEARCHER

ICONICS informed CISA that these products are affected by vulnerabilities in
third-party components.


4. MITIGATIONS

Version 10.97.2 Critical Fixes Rollup 2 and later is not vulnerable to these
exploits. ICONICS recommends that users of its products take the following
mitigation steps:

 * Ensure the 10.97.2 Critical Fixes Rollup release is applied to version
   10.97.2 systems.
 * For systems that do not contain the patch/fix:
   * Do not use the BACnet/SC feature on a production system.

ICONICS and Mitsubishi Electric recommend updating the ICONICS Suite with the
latest security patches as they become available. ICONICS Suite security patches
may be found here (login required).(link is external)

ICONICS and Mitsubishi Electric are releasing security updates as critical
fixes/rollup releases. Refer to the ICONICS whitepaper on security
vulnerabilities, the most recent version of which can be found here(link is
external), and to the Mitsubishi Electric security advisories 2022-014(link is
external) and 2023-009(link is external) for information on the availability of
the security updates.

CISA recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. Specifically, users should:

 * Minimize network exposure for all control system devices and/or systems, and
   ensure they are not accessible from the Internet.
 * Locate control system networks and remote devices behind firewalls and
   isolate them from business networks.
 * When remote access is required, use secure methods, such as virtual private
   networks (VPNs), recognizing VPNs may have vulnerabilities and should be
   updated to the most current version available. Also recognize VPN is only as
   secure as its 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 at 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.

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.

This product is provided subject to this Notification and this Privacy &
Use policy.


VENDOR

ICONICS, Mitsubishi Electric


PLEASE SHARE YOUR THOUGHTS

We recently updated our anonymous product survey; we’d welcome your feedback.


RELATED ADVISORIES

Aug 22, 2023
ICS Advisory | ICSA-23-234-03


ROCKWELL AUTOMATION THINMANAGER THINSERVER

Aug 22, 2023
ICS Advisory | ICSA-23-234-01


HITACHI ENERGY AFF66X

Aug 22, 2023
ICS Advisory | ICSA-23-234-02


TRANE THERMOSTATS

Aug 17, 2023
ICS Advisory | ICSA-23-229-04


WALCHEM INTUITION 9

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