9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.003 Low
EPSS
Percentile
68.2%
Successful exploitation of these vulnerabilities could cause a denial-of-service condition, allow privilege escalation or allow remote code execution.
Honeywell reports these vulnerabilities affect the following versions of Experion PKS, LX, and PlantCruise:
3.2.1 HEAP-BASED BUFFER OVERFLOW CWE-122
Experion Server or Console Station could experience a denial-of-service condition due to a heap overflow during the handling of a specially crafted message for a specific configuration operation.
CVE-2023-23585 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
3.2.2 STACK-BASED BUFFER OVERFLOW CWE-121
Experion Server or Console Station could experience a denial-of-service condition or remote code execution due to a stack overflow during the handling of a specially crafted message for a specific configuration operation.
CVE-2023-25078 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
3.2.3 UNEXPECTED STATUS CODE OR RETURN VALUE CWE-394
C300 could leak configuration data when an error is generated in response to a specially crafted message.
CVE-2023-25948 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
3.2.4 UNCONTROLLED RESOURCE CONSUMPTION CWE-400
C300 could experience a denial-of-service condition due to a buffer overflow in the handling of a specially crafted message received by the controller.
CVE-2023-26597 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
3.2.5 IMPROPER ENCODING OR ESCAPING OF OUTPUT CWE-116
C300 could experience a denial-of-service condition due to a stack overflow when decoding a message from the server.
CVE-2023-24480 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
3.2.6 DESERIALIZATION OF UNTRUSTED DATA CWE-502
C300 could experience a denial-of-service condition due to a buffer overflow when an error is generated in response to a specially crafted message.
CVE-2023-25770 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
3.2.7 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY CWE-345
C300 may be loaded with malicious firmware which could enable remote code execution.
CVE-2023-25178 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
3.2.8 INCORRECT COMPARISON CWE-697
Experion Server may experience a denial-of-service condition due to an incorrect comparison when handling a specially crafted message.
CVE-2023-22435 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
3.2.9 HEAP-BASED BUFFER OVERFLOW CWE-122
Experion Server may experience a denial-of-service condition due to a heap overflow which could occur when handling a specially crafted message.
CVE-2023-24474 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
ARMIS cyber researchers reported these vulnerabilities to Honeywell.
Honeywell recommends users upgrade Experion Platforms to version R520.2. Download information includes the following:
Honeywell advises users to follow security best practices for Experion platform environments to ensure access is limited to authorized users only. Users should ensure the backup files are maintained in a network location or physical drive with access limited to authorized users only and should not share them.
Honeywell Security Notifications are available on the Honeywell website. For access, users should visit the Honeywell website and sign in, select the search icon at the top of the web page, and search for “SN2023-06-22”.
CISA recommends users take defensive measures to minimize the risk of exploitation of 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 these vulnerabilities. These vulnerabilities are exploitable remotely. These vulnerabilities have a low attack complexity.
process.honeywell.com/
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-22435
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-23585
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-24474
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web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-25948
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