3.8 Low
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:A/AC:M/Au:S/C:P/I:P/A:N
7.1 High
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
6.2 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
33.0%
CVSS v3 4.9
Vendor: Medtronic
Equipment: MyCareLink Patient Monitor
Vulnerabilities: Insufficient Verification of Data Authenticity, Storing Passwords in a Recoverable Format
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.
The following versions of the Medtronic MyCareLink 24950 Patient Monitor, are affected:
The affected productβs 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 (AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N).
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 (AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N).
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 authenticity.
Medtronic recommends users take additional defensive measures to minimize the risk of exploitation. 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 these vulnerabilities. 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-2018-10622
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-10626
cwe.mitre.org/data/definitions/257.html
cwe.mitre.org/data/definitions/345.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
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mailto:?subject=Medtronic%20MyCareLink%2024950%20Patient%20Monitor&body=www.cisa.gov/news-events/ics-medical-advisories/icsma-18-219-01
3.8 Low
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:A/AC:M/Au:S/C:P/I:P/A:N
7.1 High
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
6.2 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
33.0%