Successful exploitation of this vulnerability could allow an authenticated user to recover credentials for other Linux users.
Johnson Controls reports that the following versions of Illustra Essential Gen 4, an IP camera, are affected:
Under certain circumstances the Linux users credentials may be recovered by an authenticated user.
CVE-2024-32756 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N).
Sam Hanson of Dragos reported this vulnerability to Johnson Controls.
Johnson Controls recommends users upgrade camera to Illustra.Ess4.01.02.13.6953
For more detailed mitigation instructions, please see Johnson Controls Product Security Advisory JCI-PSA-2024-07 v1.
Aligning with CISA recommendations, Johnson Controls recommends taking steps to minimize risks to all building automation systems.
CISA provides a section for control systems security recommended practices on the ICS web page on us-cert.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Further ICS security notices and product security guidance are located at Johnson Controls’ product security website
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability has a high attack complexity.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-32756
cwe.mitre.org/data/definitions/257.html
github.com/cisagov/CSAF
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us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.cisa.gov/resources-tools/resources/ics-recommended-practices
www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
www.cisa.gov/topics/industrial-control-systems
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www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
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