Honeywell Experion PKS, Experion LX, PlantCruise by Experion, Safety Manager, Safety Manager SC Buffer Access with Incorrect Length Value (CVE-2023-5396)

high Tenable OT Security Plugin ID 502235

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Server receiving a malformed message creates connection for a hostname that may cause a stack overflow resulting in possible remote code execution. See Honeywell Security Notification for recommendations on upgrading and versioning.

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 fixed the reported issues and advises users to upgrade to version referenced in the Security Notice or CVE record.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should:

- Ensure the least-privilege user principle is followed.
- Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
- Locate control system networks and remote devices behind firewalls and isolate them from business networks.
- 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.

Plugin Details

Severity: High

ID: 502235

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 5/2/2024

Updated: 5/3/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: cpe:/o:honeywell:c300_firmware

Required KB Items: Tenable.ot/Honeywell

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 4/25/2024

Reference Information

CVE: CVE-2023-5396

CWE: 805

Detections

Analytics