-----BEGIN PGP SIGNED MESSAGE-----
AUSCERT External Security Bulletin Redistribution
Multiple vulnerabilities have been identified in Medtronic
MyCareLink 24950 Patient Monitor
8 August 2018
AusCERT Security Bulletin Summary
Product: Medtronic MyCareLink 24950 Patient Monitor
Operating System: Network Appliance
Impact/Access: Access Privileged Data -- Console/Physical
Provide Misleading Information -- Console/Physical
CVE Names: CVE-2018-10626 CVE-2018-10622
- --------------------------BEGIN INCLUDED TEXT--------------------
Medtronic MyCareLink 24950 Patient Monitor
Original release date: August 07, 2018
All information products included in http://ics-cert.us-cert.gov 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 http://www.us-cert.gov/tlp/.
1. EXECUTIVE SUMMARY
CVSS v3 4.9
Equipment: MyCareLink Patient Monitor
Vulnerabilities: Insufficient Verification of Data Authenticity, Storing
Passwords in a Recoverable Format
2. RISK EVALUATION
Successful exploitation of these vulnerabilities may allow an attacker with
physical access to obtain per-product credentials that are utilized to
authenticate data uploads and encrypt data at rest. Additionally, an attacker
with access to a set of these credentials and additional identifiers can
upload invalid data to the Medtronic CareLink network.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of the Medtronic MyCareLink 24950 Patient Monitor, are
24950 MyCareLink Monitor, all versions,
24952 MyCareLink Monitor, all versions.
3.2 VULNERABILITY OVERVIEW
3.2.1 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY CWE-345
The affected products update service does not sufficiently verify the
authenticity of the data uploaded. An attacker who obtains per-product
credentials from the monitor and paired implantable cardiac device information
can potentially upload invalid data to the Medtronic CareLink network.
CVE-2018-10626 has been assigned to this vulnerability. A CVSS v3 base score
of 4.4 has been calculated; the CVSS vector string is
3.2.2 STORING PASSWORDS IN A RECOVERABLE FORMAT CWE-257
The affected products use per-product credentials that are stored in a
recoverable format. An attacker can use these credentials for network
authentication and encryption of local data at rest.
CVE-2018-10622 has been assigned to this vulnerability. A CVSS v3 base score
of 4.9 has been calculated; the CVSS vector string is
CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Ireland
Billy Rios, Jesse Young, and Jonathan Butts of Whitescope LLC reported these
vulnerabilities to NCCIC.
Medtronic has made server-side updates to address the insufficient
verification vulnerability identified in this advisory. Medtronic is
implementing additional server-side mitigations to enhance data integrity and
Medtronic recommends users take additional defensive measures to minimize the
risk of exploitation. Specifically, users should:
Maintain good physical control over the home monitor.
Only use home monitors obtained directly from their healthcare provider or a
Medtronic representative to ensure integrity of the system.
Medtronic has released additional patient focused information, at the
NCCIC recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. Specifically, users should:
Do not upload and run files without verifying the integrity of the file.
Interact with, and only obtain files, software, and software patches from
trustworthy reputable sources.
Minimize network exposure for all medical devices and/or systems, and ensure
that they are not accessible from the Internet.
NCCIC reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
NCCIC also provides a section for control systems security recommended
practices on the ICS-CERT web page. 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-CERT website in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to NCCIC for
tracking and correlation against other incidents.
No known public exploits specifically target these vulnerabilities. These
vulnerabilities are not exploitable remotely. High skill level is needed to
For any questions related to this report, please contact the NCCIC at:
Toll Free: 1-888-282-0870
For industrial control systems cybersecurity information:
or incident reporting: https://ics-cert.us-cert.gov/Report-Incident?
The NCCIC continuously strives to improve its products and services. You can
help by choosing one of the links below to provide feedback about this
- --------------------------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 email@example.com
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:
Australian Computer Emergency Response Team
The University of Queensland
Internet Email: firstname.lastname@example.org
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-----
-----END PGP SIGNATURE-----