CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
35.8%
Successful exploitation of these vulnerabilities could allow an attacker to access cookies and take over the user’s session.
The following versions of System Configuration Tool (SCT) are affected:
3.2.1 SENSITIVE COOKIE WITHOUT ‘HTTPONLY’ FLAG CWE-1004
System Configuration Tool (SCT) versions 14 and 15 are vulnerable during a cross-site scripting attack. This could allow an attacker to access cookies and take control of an affected system.
CVE-2022-21939 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:H/PR:N/UI:R/S:U/C:H/I:H/A:H).
3.2.2 SENSITIVE COOKIE IN HTTPS SESSION WITHOUT ‘SECURE’ ATTRIBUTE CWE-614
System Configuration Tool (SCT) versions 14 and 15 are vulnerable during a cross-site scripting attack. This could allow an attacker to access cookies and take control of an affected system.
CVE-2022-21940 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:H/PR:N/UI:R/S:U/C:H/I:H/A:H).
Johnson Controls, Inc. reported these vulnerabilities to CISA.
Johnson Controls recommends users take the following actions to mitigate the vulnerabilities.
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 these vulnerabilities. These vulnerabilities have a high attack complexity.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-21939
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-21940
cisa.gov/ics
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cwe.mitre.org/data/definitions/1004.html
cwe.mitre.org/data/definitions/614.html
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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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