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             AUSCERT External Security Bulletin Redistribution

                               ESB-2023.2946
         ICS Advisory | ICSA-23-138-03 Hitachi Energy's MicroSCADA
                           Pro/X SYS600 Products
                                19 May 2023

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

Product:           Hitachi Energy's MicroSCADA Pro/X SYS600 Products
Publisher:         ICS-CERT
Operating System:  Network Appliance
Resolution:        Patch/Upgrade
CVE Names:         CVE-2011-1207  

Original Bulletin: 
   https://www.cisa.gov/news-events/ics-advisories/icsa-23-138-03

Comment: CVSS (Max):  6.7 CVE-2011-1207 (CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H)
         CVSS Source: ICS-CERT
         Calculator:  https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

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ICS Advisory (ICSA-23-138-03)

Hitachi Energy's MicroSCADA Pro/X SYS600 Products

Release Date
May 18, 2023

1. EXECUTIVE SUMMARY

  o CVSS v3 6.7
  o ATTENTION: Public exploits are available
  o Vendor: Hitachi Energy
  o Equipment: MicroSCADA Pro/X SYS600 Products
  o Vulnerabilities: Permissions, Privileges, and Access Controls

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to
execute arbitrary code on the affected product.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Hitachi Energy's MicroSCADA Pro/X SYS600 products are
affected:

  o SYS600: 9.4 FP2 Hotfix 5 and earlier
  o SYS600: 10.1.1 and earlier

3.2 VULNERABILITY OVERVIEW

3.2.1 PERMISSIONS, PRIVILEGES, AND ACCESS CONTROLS CWE-264

The ActiveBar ActiveX control distributed in ActBar.ocx 1.0.3.8 in SYS600
product does not properly restrict the SetLayoutData method, which could allow
attackers to execute arbitrary code via a crafted data argument.

CVE-2011-1207 has been assigned to this vulnerability. A CVSS v3 base score of
6.7 has been calculated; the CVSS vector string is ( AV:L/AC:H/PR:L/UI:R/S:U/
C:H/I:H/A:H ).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Energy
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: Switzerland

3.4 RESEARCHER

Hitachi Energy reported this vulnerability to CISA.

4. MITIGATIONS

Hitachi Energy has released the following mitigations/fixes:

  o SYS600 9.x: upgrade to at least SYS600 version 10.2 or apply general
    mitigation factors.
  o SYS600 10.x update to at least SYS600 version 10.2 or apply general
    mitigation factors.

Hitachi Energy recommends general mitigation factors and workarounds:

  o Recommended security practices and firewall configurations can help protect
    a process control network from attacks originating from outside the
    network.
  o Keep process control systems physically protected from direct access by
    unauthorized personnel.
  o Ensure process control systems have no direct connections to the internet,
    are separated from other networks by means of a firewall system that has a
    minimal number of ports exposed, and other practices that must be evaluated
    case by case.
  o Avoid using process control systems for internet surfing, instant
    messaging, or receiving emails.
  o Carefully scan portable computers and removable storage media for malware
    before connection to a control system.
  o Ensure proper password policies and processes are followed.

Hitachi Energy recommends following the cybersecurity deployment guideline as
follows: 1MRK511518 MicroSCADA X Cyber Security Deployment Guideline.

For more information, see Hitachi Energy cybersecurity advisory 8DBD000142 .

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 they are not accessible from the Internet .
  o Locate control system networks and remote devices behind firewalls and
    isolate them from business networks.
  o 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.

CISA also recommends users take the following measures to protect themselves
from social engineering attacks:

  o Do not click web links or open attachments in unsolicited 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.

This vulnerability is not exploitable remotely. This vulnerability has a high
attack complexity.

Related Advisories

May 18, 2023
ICS Advisory | ICSA-23-138-01

Carlo Gavazzi Powersoft

May 18, 2023
ICS Advisory | ICSA-20-051-02

Rockwell Automation FactoryTalk Diagnostics (Update B)

May 18, 2023
ICS Advisory | ICSA-23-138-02

Mitsubishi Electric MELSEC WS Series

May 18, 2023
ICS Advisory | ICSA-23-138-04

Johnson Controls OpenBlue Enterprise Manager Data Collector

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