4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:N/A:N
4.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.8 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
28.4%
Successful exploitation of these vulnerabilities could allow an attacker access to administrative controls and system configurations, which could allow changes to system configuration items causing patient data to be sent to a remote destination.
The following versions of SureSigns VS4, a vital signs patient monitor, are affected:
3.2.1 IMPROPER INPUT VALIDATION CWE-20
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties required to process the data safely and correctly.
CVE-2020-16237 has been assigned to this vulnerability. A CVSS v3 base score of 2.1 has been calculated; the CVSS vector string is (AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L).
3.2.2 IMPROPER ACCESS CONTROL CWE-284
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CVE-2020-16241 has been assigned to this vulnerability. A CVSS v3 base score of 6.3 has been calculated; the CVSS vector string is (AV:P/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H).
3.2.3 IMPROPER AUTHENTICATION CWE-287
When an actor claims to have a given identity, the software does not prove or insufficiently proves the claim is correct.
CVE-2020-16239 has been assigned to this vulnerability. A CVSS v3 base score of 4.9 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N).
Cleveland Clinic reported these vulnerabilities to Philips.
As a mitigation to these vulnerabilities, Philips recommends users change all system passwords on the SureSigns VS4 with unique passwords for each device and secure the device when not in use to prevent unauthorized access, as referenced in the Installation and Configuration Guide available on Incenter. Philips also recommends users consider replacing the SureSigns VS4 device with a newer technology.
Users with questions regarding specific SureSigns VS4 patient monitor installations and upgrade options should contact Philips service support or regional service support or call 1-800-722-9377.
Please see the Philips advisory for vulnerabilities discussed in this disclosure, and visit the Philips product security website for the latest security information for Philips products.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should:
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.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.gov in the Technical Information Paper, ICS-TIP-12-146-01B–Targeted 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. Low skill level is needed to exploit.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-16237
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-16239
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-16241
www.philips.com/productsecurity
cwe.mitre.org/data/definitions/20.html
cwe.mitre.org/data/definitions/284.html
cwe.mitre.org/data/definitions/287.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=Philips%20SureSigns%20VS4+https://www.cisa.gov/news-events/ics-medical-advisories/icsma-20-233-01
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-20-233-01&title=Philips%20SureSigns%20VS4
www.fda.gov/MedicalDevices/DigitalHealth/ucm373213.htm
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
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-20-233-01
www.oig.dhs.gov/
www.philips.com/productsecurity
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-medical-advisories/icsma-20-233-01
www.us-cert.gov/ics
www.us-cert.gov/ics
www.us-cert.gov/ics/recommended-practices
www.us-cert.gov/ics/tips/ICS-TIP-12-146-01B
www.us-cert.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.usa.gov/
www.usa.philips.com/healthcare/solutions/customer-service-solutions
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Philips%20SureSigns%20VS4&body=www.cisa.gov/news-events/ics-medical-advisories/icsma-20-233-01
4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:N/A:N
4.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.8 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
28.4%