Hitachi Energys RTU500 Series Product Out-of-Bounds Read (CVE-2022-23937)

high Tenable OT Security Plugin ID 501741

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability exists in the Wind River VxWorks version 6.9 that affects the RTU500 series product versions listed below.

RTU500 series CMU Firmware versions 12.0.1 – 12.0.14 12.2.1 – 12.2.11 12.4.1 – 12.4.11 12.6.1 – 12.6.8 12.7.1 – 12.7.5 13.2.1 – 13.2.5 13.3.1 – 13.3.3 13.4.1

In Wind River VxWorks 6.9 and 7, a specific crafted packet may lead to an out-of-bounds read during an IKE initial exchange scenario.

This plugin only works with Tenable.ot.
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Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Hitachi Energy has released the following mitigations/fixes:

- Until the updates are made available, follow the General Mitigation Factors/Workarounds

Hitachi Energy recommends general mitigation factors/Workarounds:

- Recommended security practices and firewall configurations can help protect a process control network from attacks originating from outside the network including.
- Physically protect process control systems from direct access by unauthorized personnel.
- Do not allow process control systems direct connections to the internet.
- Separate process control systems from other networks by means of a firewall system that has a minimal number of ports exposed.
- Process control systems should not be used for internet surfing, instant messaging, or receiving emails.
- Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system.

For more information, see Hitachi Energy’s Security Advisories:

Plugin Details

Severity: High

ID: 501741

Version: 1.4

Type: remote

Family: Tenable.ot

Published: 9/29/2023

Updated: 3/4/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2022-23937

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:hitachienergy:rtu500_firmware

Required KB Items: Tenable.ot/ABB

Exploit Ease: No known exploits are available

Patch Publication Date: 3/29/2022

Vulnerability Publication Date: 3/29/2022

Reference Information

CVE: CVE-2022-23937

CWE: 125

Detections

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