Honeywell Experion PKS and ACE Controllers Improper Neutralization of Special Elements in Output Used By a Downstream Component (CVE-2021-38395)

critical Tenable OT Security Plugin ID 500790

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Honeywell Experion PKS C200, C200E, C300, and ACE controllers are vulnerable to improper neutralization of special elements in output, which may allow an attacker to remotely execute arbitrary code and cause a denial-of-service condition.

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.

Honeywell recommends users follow all guidance in the Experion Network and Security Planning Guide to prevent attacks by malicious actors.

Additional information can be found in Honeywell Support document SN2021-02-22-01.

Plugin Details

Severity: Critical

ID: 500790

Version: 1.7

Type: remote

Family: Tenable.ot

Published: 2/1/2023

Updated: 4/11/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

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-2021-38395

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:honeywell:c200_controller_firmware:-, cpe:/o:honeywell:c200e_controller_firmware:-, cpe:/o:honeywell:c300_controller_firmware:-

Required KB Items: Tenable.ot/Honeywell

Exploit Ease: No known exploits are available

Patch Publication Date: 10/28/2022

Vulnerability Publication Date: 10/28/2022

Reference Information

CVE: CVE-2021-38395

CWE: 74

Detections

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