7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
6.8 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.3 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
29.7%
If exploited, these vulnerabilities may allow privileged access to the monitorβs operating system. However, physical access to the MyCareLink monitor is required. Additionally, these vulnerabilities may allow a MyCareLink monitor, when operated within close physical proximity of an implantable cardiac device, to read and write arbitrary memory values of that device.
The following MyCareLink Monitors are affected:
3.2.1 USE OF HARD-CODED PASSWORD CWE-259
The affected product contains a hard-coded operating system password. An attacker with physical access can remove the case of the device, connect to the debug port, and use the password to gain privileged access to the operating system
CVE-2018-8870 has been assigned to this vulnerability. A CVSS v3 base score of 6.4 has been assigned; the CVSS vector string is (AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
3.2.2 EXPOSED DANGEROUS METHOD OR FUNCTION CWE-749
The affected product contains debug code meant to test the functionality of the monitorβs communication interfaces, including the interface between the monitor and implantable cardiac device. An attacker with physical access to the device can apply the other vulnerabilities within this advisory to access this debug functionality.
This debug functionality provides the ability to read and write arbitrary memory values to implantable cardiac devices via inductive or short range wireless protocols. An attacker with close physical proximity to a target implantable cardiac device can use this debug functionality.
CVE-2018-8868 has been assigned to this vulnerability. A CVSS v3 base score of 6.2 has been assigned; the CVSS vector string is (AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L).
Peter Morgan of Clever Security reported these vulnerabilities to NCCIC.
Medtronic will release several rolling over-the-air product updates that will mitigate the vulnerabilities described within this advisory. These updates will be applied to devices automatically as part of standard, reoccurring update processes. In addition, Medtronic has increased security monitoring of affected devices and related infrastructure.
Medtronic recommends users take additional defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should:
Medtronic has released additional patient focused information, at the following location:
<https://www.medtronic.com/security>
NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
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-12-146-01BβTargeted Cyber Intrusion Detection and Mitigation Strategies.
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 exploit.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-8868
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-8870
cwe.mitre.org/data/definitions/259.html
cwe.mitre.org/data/definitions/749.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=Medtronic%20MyCareLink%20Patient%20Monitor+https://www.cisa.gov/news-events/ics-medical-advisories/icsma-18-179-01
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-18-179-01&title=Medtronic%20MyCareLink%20Patient%20Monitor
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:P/AC:H/PR:N/UI:N/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-18-179-01
www.medtronic.com/security
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-medical-advisories/icsma-18-179-01
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Medtronic%20MyCareLink%20Patient%20Monitor&body=www.cisa.gov/news-events/ics-medical-advisories/icsma-18-179-01
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
6.8 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.3 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
29.7%