Successful exploitation of these vulnerabilities could allow for configuration and firmware manipulation or remote code execution.
The following versions of Safety Manager, a safety solution of the Experion Process Knowledge System, are affected:
The affected product uses the unauthenticated Safety Builder protocol, which does not validate or authenticate the download logic. This could allow an attacker to preform remote code execution on the CPU module.
CVE-2022-30315 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).
The affected product utilizes the Safety Builder protocol, which does not have native authentication. An attacker capable of invoking the protocols’ functionalities could cause configuration and system changes.
CVE-2022-30313 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L).
The affected product access to the boot configuration is controlled by credentials hard-coded in the Safety Manger firmware. This could allow an attacker with serial interface access to control the boot process and manipulate the firmware image.
CVE-2022-30314 has been assigned to this vulnerability. A CVSS v3 base score of 6.8 has been assigned; the CVSS vector string is (AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N).
The affected product firmware images are not signed and only rely on insecure checksums for regular integrity checks. This could allow an attacker with access to the serial interface to control the boot process or push malicious firmware.
CVE-2022-30316 has been assigned to this vulnerability. A CVSS v3 base score of 6.8 has been assigned; the CVSS vector string is (AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N).
Daniel dos Santos and Jos Wetzels from Forescout Technologies reported these vulnerabilities to CISA.
Honeywell recommends the following:
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability these vulnerabilities. Specifically, users should:
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 at 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.
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 exploits specifically target this vulnerability.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-30313
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-30314
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-30315
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-30316
cisa.gov/ics
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cwe.mitre.org/data/definitions/306.html
cwe.mitre.org/data/definitions/345.html
cwe.mitre.org/data/definitions/345.html
cwe.mitre.org/data/definitions/798.html
process.honeywell.com/us/en/products/control-and-supervisory-systems/safety-systems/safety-manager
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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/uscert/ics/alerts/ICS-ALERT-10-301-01
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