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AUSCERT External Security Bulletin Redistribution
ESB-2022.4665
Advisory (icsma-22-263-01) Medtronic NGP 600 Series Insulin Pumps
21 September 2022
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AusCERT Security Bulletin Summary
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Product: Medtronic NGP 600 Series Insulin Pumps
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Mitigation
CVE Names: CVE-2022-32537
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsma-22-263-01
Comment: CVSS (Max): 4.8 CVE-2022-32537 (CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N)
CVSS Source: ICS-CERT
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
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ICS Medical Advisory (ICSMA-22-263-01)
Medtronic NGP 600 Series Insulin Pumps
Original release date: September 20, 2022
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 4.8
o ATTENTION: Exploitable from an adjacent network
o Vendor: Medtronic
o Equipment: MiniMed 600 Series Insulin Pumps, Guardian Link 3 Transmitter,
Guardian 2 Link Transmitter, Carelink USB, Contour Next Link 2.4
o Vulnerability: Protection Mechanism Failure
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an unauthorized user
to deliver too much or too little insulin through delivery of an unintended
insulin bolus or because insulin delivery is slowed or stopped.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of the Medtronic NGP 600 Series Insulin Pumps and
accessory components are affected:
o MiniMed 620G: MMT-1710
o MiniMed 630G: MMT-1715, MMT-1754, MMT-1755
o MiniMed 640G: MMT-1711, MMT-1712, MMT-1751, MMT-1752
o MiniMed 670G: MMT-1740, MMT-1741, MMT-1742, MMT-1760, MMT-1762, MMT-1762,
MMT-1780, MMT-1781, MMT-1782
3.2 VULNERABILITY OVERVIEW
3.2.1 PROTECTION MECHANISM FAILURE CWE-693
A vulnerability exists which could allow an unauthorized user to learn aspects
of the communication protocol used to pair system components while the pump is
being paired with other system components. Exploitation requires nearby
wireless signal proximity with the patient and the device; advanced technical
knowledge is required for exploitation.
CVE-2022-32537 has been assigned to this vulnerability. A CVSS v3 base score of
4.8 has been calculated; the CVSS vector string is ( AV:A/AC:H/PR:L/UI:N/S:U/
C:N/I:H/A:N ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Ireland
3.4 RESEARCHER
Medtronic internally identified and reported this vulnerability to CISA.
4. MITIGATIONS
Medtronic recommends users to take the following actions:
1. Turn off the "Remote Bolus" feature on the pump.
2. Only connect or link devices in a private place.
Note: Turning off the remote bolus feature will ensure no remote bolus is
possible.
Medtronic has identified the following precautions to assist users:
o Ensure the pump and connected system components are always controlled by an
authorized user.
o Be attentive to pump notifications, alarms, and alerts.
o Immediately cancel any boluses not initiated by authorized personnel;
monitor blood glucose levels closely and reach out to Medtronic 24-Hour
Technical Support to report the bolus.
o Disconnect the USB device from the computer when not downloading pump data.
o Users should not confirm remote connection requests or any other remote
action on the pump screen unless it is initiated by authorized care
personnel.
o Avoid sharing pump or device serial numbers with anyone other than the
healthcare provider, distributors, and Medtronic.
o Users should not accept, calibrate, or bolus using a blood glucose reading
not initiated by authorized care personnel.
o Users should not connect to or allow any third-party devices to connect to
the pump
o Do not use software not authorized by Medtronic as being safe for use with
the pump.
o Medtronic advises patients experiencing symptoms of severe hypoglycemia or
diabetic ketoacidosis to seek immediate medical attention.
o Users are encouraged to reach out to Medtronic 24-Hour Technical Support
(1-800-646-4633) if they suspect a pump setting or insulin delivery have
changed unexpectedly, without proper knowledge.
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 this vulnerability. This
vulnerability has a high attack complexity.
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.
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