CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
29.5%
Successful exploitation of these vulnerabilities could allow attackers with physical access to the device to obtain sensitive information or crash the device being accessed.
The following versions of the Hamilton-T1 Ventilator, are affected:
Hard-Coded credentials in the ventilator allow attackers with physical access to obtain admin privileges for the deviceβs configuration interface.
CVE-2020-27278 has been assigned to this vulnerability. A CVSS v3 base score of 3.5 has been calculated; the CVSS vector string is (AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).
An XML validation vulnerability in the ventilator allows privileged attackers with physical access to render the device persistently unusable by uploading specially crafted configuration files.
CVE-2020-27282 has been assigned to this vulnerability. A CVSS v3 base score of 4.3 has been calculated; the CVSS vector string is (AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
An information disclosure vulnerability in the ventilator allows attackers with physical access to the configuration interfaceβs logs to get valid checksums for tampered configuration files.
CVE-2020-27290 has been assigned to this vulnerability. A CVSS v3 base score of 2.1 has been calculated; the CVSS vector string is (AV:P/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).
Julian Suleder, Raphael Pavlidis, and Nils Emmerich of ERNW Research GmbH and Dr. Oliver Matula of ERNW Enno Rey Netzwerke GmbH reported these vulnerabilities to the Federal Office for Information Security (BSI, Germany), in the context of the BSI project ManiMed β Manipulation of Medical Devices. BSI then provided this report to CISA.
Hamilton Medical recommends users of affected versions update to a version later than T1 Ventilator Version 2.2.3 where possible. Additionally, Hamilton Medical recommends users:
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities
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 us-cert.cisa.gov. Several recommended 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 on us-cert.cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01BβTargeted Cyber Intrusion Detection and Mitigation Strategies.
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.
No known public exploits specifically target these vulnerabilities. These vulnerabilities are not exploitable remotely.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-27278
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-27282
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-27290
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cwe.mitre.org/data/definitions/112.html
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CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
29.5%