10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9 High
AI Score
Confidence
High
0.005 Low
EPSS
Percentile
77.5%
Successful exploitation of these vulnerabilities together could result in the attacker being able to modify or fabricate data from the implanted cardiac device being uploaded to the CareLink Network and remotely execute code on the MCL Smart Patient Reader device, which could allow control of a paired cardiac device. The exploitation must be initiated within Bluetooth signal proximity of the vulnerable product. Medtronic is currently unaware of any cyberattack, privacy breach, or patient harm as a result of these vulnerabilities.
The following versions of the Medtronic MyCareLink Smart Patient Reader, are affected:
The affected products contain an authentication protocol vulnerability where the method used to authenticate between the MCL Smart Patient Reader and the Medtronic MyCareLink Smart mobile app is vulnerable to bypass. This vulnerability enables an attacker to use another mobile device or malicious application on the patientβs smartphone to authenticate to the patientβs Medtronic Smart Reader, fooling the device into believing it is communicating with the original Medtronic smart phone application when executed within range of Bluetooth communication.
CVE-2020-25183 has been assigned to this vulnerability. A CVSS v3 base score of 8.0 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
The affected products are vulnerable when an authenticated attacker runs a debug command, which can be sent to the patient reader and cause a heap overflow event within the MCL Smart Patient Reader software stack. The heap overflow could allow an attacker to remotely execute code on the MCL Smart Patient Reader, potentially leading to control of the device
CVE-2020-25187 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H).
The affected products are vulnerable to a race condition in the MCL Smart Patient Reader software update system, which allows unsigned firmware to be uploaded and executed on the Patient Reader. If exploited, an attacker could remotely execute code on the MCL Smart Patient Reader device, leading to control of the device.
CVE-2020-27252 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H).
Sternum, based in Tel Aviv, Israel, discovered and initially reported these vulnerabilities to Medtronic.
A team of researchers from the University of California Santa Barbara, University of Florida, and University of Michigan also independently discovered the lack of authentication vulnerability. This team consists of Eric Gustafson, Sara Rampazzi, Paul Grosen, Christopher Kruegel, and Giovanni Vigna.
A firmware update to eliminates these vulnerabilities has been developed by Medtronic and is available by updating the MyCareLink Smartapp via the associated mobile application store. Upgrading to the latest v5.2 mobile application version will ensure the Patient Reader is also updated on next use. The userβs smart phone must be updated to the following operating system version for the patches to be applied: iOS 10 and above; Android 6.0 and above.
Medtronic has released additional patient focused information:
https://www.medtronic.com/xg-en/product-security/security-bulletins.html
In response to these vulnerabilities, Medtronic has applied additional controls for monitoring and responding to improper use of the MCL Smart Patient Reader:
Medtronic recommends that users take additional defensive measures to minimize risk. Specifically, users should:
Report any concerning behavior regarding these products to your healthcare provider or a Medtronic representative.
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-2020-25183
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-25187
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-27252
cwe.mitre.org/data/definitions/122.html
cwe.mitre.org/data/definitions/287.html
cwe.mitre.org/data/definitions/367.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=Medtronic%20MyCareLink%20Smart+https://www.cisa.gov/news-events/ics-medical-advisories/icsma-20-345-01
us-cert.cisa.gov/ics
us-cert.cisa.gov/ics
us-cert.cisa.gov/ics/recommended-practices
us-cert.cisa.gov/ics/tips/ICS-TIP-12-146-01B
us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-medical-advisories/icsma-20-345-01&title=Medtronic%20MyCareLink%20Smart
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-medical-advisories/icsma-20-345-01
www.medtronic.com/security
www.medtronic.com/xg-en/product-security/security-bulletins.html
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-medical-advisories/icsma-20-345-01
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Medtronic%20MyCareLink%20Smart&body=www.cisa.gov/news-events/ics-medical-advisories/icsma-20-345-01
10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9 High
AI Score
Confidence
High
0.005 Low
EPSS
Percentile
77.5%