CVSS3
Attack Vector
ADJACENT
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
HIGH
Availability Impact
LOW
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L
AI Score
Confidence
Low
EPSS
Percentile
20.6%
An attacker with physical access to the Kantech Gen1 ioSmart card reader in certain circumstances can recover the reader’s communication memory between the card and reader.
The following versions of Kantech Gen1 ioSmart card reader are affected:
3.2.1 MISSING RELEASE OF MEMORY AFTER EFFECTIVE LIFETIME CWE-401
Kantech Gen1 ioSmart card readers with firmware versions prior to 1.7.2 do not properly release memory after its effective lifetime. An attacker with physical access to the Kantech Gen1 ioSmart card reader in certain circumstances can recover the reader’s communication memory between the card and reader. CWE-200: Exposure of Sensitive Information to an Unauthorized Actor also applies to this vulnerability.
CVE-2023-0248 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.5 has been calculated; the CVSS vector string is (AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L).
Colin O’Flynn at NewAE Technology Inc. reported this vulnerability to Johnson Controls. Johnson Controls reported this vulnerability to CISA.
Johnson Controls recommends users update their Kantech Gen1 ioSmart card reader firmware to version 1.7.2 or higher.
Johnson Controls also makes the following recommendations and wishes to provide the following information:
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:
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 this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely. This vulnerability has a high attack complexity.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-0248
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cwe.mitre.org/data/definitions/401.html
github.com/cisagov/CSAF
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
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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
www.cisa.gov/topics/industrial-control-systems
www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
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