PatchSiren cyber security CVE debrief

CVE-2024-32756 Johnson Controls, Inc. CVE debrief

CVE-2024-32756 is a medium-severity vulnerability (CVSS 6.8) affecting Johnson Controls Illustra Essentials Gen 4 cameras. The issue allows an authenticated user to recover Linux user credentials under certain circumstances. The vulnerability was disclosed by CISA on June 27, 2024, with an advisory update on July 2, 2024 that modified the mitigation schedule. The affected product is Illustra Essentials Gen 4 cameras running firmware version Illustra.Ess4.01.02.10.5982 or earlier. Johnson Controls has released firmware version Illustra.Ess4.01.02.13.6953 to address this vulnerability. The CVSS vector indicates network attack vector, low attack complexity, high privileges required, no user interaction, changed scope, and high confidentiality impact with no integrity or availability impact.

Vendor: Johnson Controls, Inc.
Product: Illustra Essentials Gen 4
CVSS: MEDIUM 6.8
CISA KEV: Not listed in stored evidence
Original CVE published: 2024-06-27
Original CVE updated: 2024-07-02
Advisory published: 2024-06-27
Advisory updated: 2024-07-02

Who should care

Organizations deploying Johnson Controls Illustra Essentials Gen 4 cameras in physical security and surveillance environments, particularly those in critical infrastructure sectors. Security teams responsible for IoT/OT device management and firmware maintenance should prioritize patching.

Technical summary

The vulnerability exists in the Linux-based firmware of Illustra Essentials Gen 4 cameras. An authenticated attacker can, under certain conditions, recover Linux user credentials. This represents a confidentiality breach with potential for further system compromise. The attack requires network access and authenticated privileges but does not require user interaction. The scope change in the CVSS vector indicates the vulnerable component impacts resources beyond its security scope.

Defensive priority

medium

Recommended defensive actions

Upgrade affected Illustra Essentials Gen 4 cameras to firmware version Illustra.Ess4.01.02.13.6953 or later
Review Johnson Controls Product Security Advisory JCI-PSA-2024-07 v1 for detailed mitigation instructions
Apply defense-in-depth strategies for industrial control systems per CISA guidance
Monitor Johnson Controls product security website for additional security notices
Follow established internal incident response procedures and report suspected malicious activity to CISA

Evidence notes

Vulnerability disclosed in CISA advisory ICSA-24-179-05 on June 27, 2024. Advisory updated July 2, 2024 with changes to mitigation schedule. Affected product confirmed as Illustra Essentials Gen 4 with firmware <=Illustra.Ess4.01.02.10.5982. Remediation firmware Illustra.Ess4.01.02.13.6953 available.

Official resources

2024-06-27