Hitachi Energy MicroSCADA Pro/X SYS600 Products (Update A)

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1. EXECUTIVE SUMMARY

• CVSS v3 8.8
• ATTENTION: Low attack complexity
• Vendor: Hitachi Energy
• Equipment: MicroSCADA X SYS600, MicroSCADA Pro
• Vulnerability: Improper Use of Validation Framework

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an unauthorized user to execute administrator level scripts.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

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

• SYS600: 10.4 and earlier
• SYS600: 9.4 FP2 Hotfix 4 and earlier

3.2 Vulnerability Overview

3.2.1 IMPROPER USE OF VALIDATION FRAMEWORK CWE-1173

An input validation vulnerability exists in the Monitor Pro interface of MicroSCADA Pro and MicroSCADA X SYS600. An authenticated user could launch an administrator level remote code execution regardless of the authenticated user's role.

CVE-2022-3388 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

3.3 BACKGROUND

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

3.4 RESEARCHER

Hitachi Energy reported this vulnerability to CISA.

4. MITIGATIONS

Hitachi Energy released the following recommended immediate actions:

For SYS600 9.x:

• Update to version SYS600 9.4 FP2 Hotfix 5 or up-grade to at least SYS600 version 10.4.1.
• A requirement to install SYS600 9.4 FP2 Hotfix 5 is to have at least the SYS600 9.4 FP2 Hotfix 4 installed.

For SYS600 10.x:

• Update to at least SYS600 version 10.4.1 Or apply general mitigation factors from Hitachi Energy.

For more information, see Hitachi Energy's Cybersecurity Advisory.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

• Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
• Locate control system networks and remote devices behind firewalls and isolating them from business networks.
• When remote access is required, use more 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 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 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.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

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 this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

• November 29, 2022: Initial Publication
• November 09, 2023: Update A - Update to Affected Product Versions, CWE, & Recommended Immediate Actions

• Hitachi Energy