Mitsubishi Electric MELSEC-Q/L and MELSEC iQ-R Improper Input Validation (CVE-2022-25163)

critical Tenable OT Security Plugin ID 500799

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Improper Input Validation vulnerability in Mitsubishi Electric MELSEC-Q Series QJ71E71-100 first 5 digits of serial number 24061 or prior, Mitsubishi Electric MELSEC-L series LJ71E71-100 first 5 digits of serial number 24061 or prior and Mitsubishi Electric MELSEC iQ-R Series RD81MES96N firmware version 08 or prior allows a remote unauthenticated attacker to cause a denial of service (DoS) condition or execute malicious code on the target products by sending specially crafted packets.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

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

Mitsubishi Electric has fixed this vulnerability in the following products:

- MELSEC-Q Series QJ71E71-100: First five digits of serial number 24062 and later
- MELSEC-L Series LJ71E71-100: First five digits of serial number 24062 and later
- MELSEC iQ-R Series RD81MES96N: firmware Version 09 and later

For more information on how to patch individual systems, please contact Mitsubishi Electric support.

If updating to a fixed version is not possible, Mitsubishi Electric recommends users take the following mitigations to minimize risk:

- Use a firewall, virtual private network (VPN), web application firewall (WAF), etc. to prevent unauthorized access when Internet access is required.
- Use within a LAN and block access from untrusted networks and hosts through firewalls.

Plugin Details

Severity: Critical

ID: 500799

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 2/13/2023

Updated: 3/4/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2022-25163

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/o:mitsubishi:melsec_iq-r_rd81mes96n_firmware, cpe:/o:mitsubishi:melsec_lj71e71-100_firmware, cpe:/o:mitsubishi:melsec_qj71e71-100_firmware

Required KB Items: Tenable.ot/Mitsubishi

Exploit Ease: No known exploits are available

Patch Publication Date: 6/2/2022

Vulnerability Publication Date: 6/2/2022

Reference Information

CVE: CVE-2022-25163

CWE: 20

Detections

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