Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2021.0576
ICS Medical Advisory (ICSMA-21-047-01)
17 February 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Hamilton-T1
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Administrator Compromise -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-27290 CVE-2020-27282 CVE-2020-27278
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsma-21-047-01
- --------------------------BEGIN INCLUDED TEXT--------------------
ICS Medical Advisory (ICSMA-21-047-01)
Hamilton-T1
Original release date: February 16, 2021
Legal Notice
All information products included in https://us-cert.cisa.gov/ics are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For more
information about TLP, see https://us-cert.cisa.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 4.3
o ATTENTION: Low skill level to exploit
o Vendor: Hamilton Medical AG
o Equipment: Hamilton-T1
o Vulnerabilities: Use of Hard-coded Credentials, Missing XML Validation
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow attackers with
physical access to the device to obtain sensitive information or crash the
device being accessed.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of the Hamilton-T1 Ventilator, are affected:
o T1 Ventilator Versions 2.2.3 and prior
3.2 VULNERABILITY OVERVIEW
3.2.1 USE OF HARD-CODED CREDENTIALS CWE-798
Hard-Coded credentials in the ventilator allow attackers with physical access
to obtain admin privileges for the device's 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 ).
3.2.2 MISSING XML VALIDATION CWE-112
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 ).
3.2.3 EXPOSURE OF SENSITIVE INFORMATION TO AN UNAUTHORIZED ACTOR CWE-200
An information disclosure vulnerability in the ventilator allows attackers with
physical access to the configuration interface's 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 ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Switzerland
3.4 RESEARCHER
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 - Manipulation of Medical Devices.
BSI then provided this report to CISA.
4. MITIGATIONS
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:
o Maintain tight physical control of the ventilator.
o Be attentive to notifications, alarms, and alerts.
o Do not connect to any third-party devices or use any unauthorized software.
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-12-146-01B--Targeted 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.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
CISA continuously strives to improve its products and services. You can help by
choosing one of the links below to provide feedback about this product.
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=vjJC
-----END PGP SIGNATURE-----