ICS Medical Advisory (ICSMA-21-019-01)

Philips Interventional Workstations

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1. EXECUTIVE SUMMARY

  • CVSS v3 6.5
  • ATTENTION: Low skill level to exploit
  • Vendor: Philips
  • Equipment: Philips Interventional WorkSpot, Coronary Tools/Dynamic Coronary Roadmap/Stentboost Live, ViewForum
  • Vulnerability: OS Command Injection

2. RISK EVALUATION

Successful exploitation of this vulnerability makes it possible for someone within the hospital network to remotely shut down or restart the workstation. In the event the workstation is remotely shut down, physicians are still able to use diagnostic imaging from the X-ray system.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

This issue affects four Haswell workstations labeled with 12NC identification numbers (4598 009 39471, 4598 009 39481, 4598 009 70861, 4598 009 98531) when running the following versions of interventional software:

  • Interventional Workspot (Release 1.3.2, 1.4.0, 1.4.1, 1.4.3, 1.4.5)
  • Coronary Tools/Dynamic Coronary Roadmap/Stentboost Live (Release 1.0)
  • ViewForum (Release 6.3V1L10)

3.2 VULNERABILITY OVERVIEW

3.2.1    IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN OS COMMAND ('OS COMMAND INJECTION') CWE-78

The software constructs all or part of an OS command using externally influenced input from an upstream component but does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when sent to a downstream component.

CVE-2020-27298 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Netherlands

3.4 RESEARCHER

Philips reported this vulnerability to CISA.

4. MITIGATIONS

Philips has released a software patch to proactively address this vulnerability in the installed base and will schedule service activities with impacted users to implement the correction. As a mitigation for this vulnerability, users with expertise are advised to change the IPMI password for the workstation interface.

Users with questions regarding specific Philips Interventional Workspot and/or installations and correction eligibility should contact a Philips service support team, regional service support, or call 1-800-722-9377 with reference to field change order (FCO) number 2019-IGTBST-014.

Please see the Philips product security website for the Philips advisory and the latest security information for Philips products.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:

  • Implement physical security measures to limit or control access to critical systems.
  • Restrict system access to authorized personnel only and follow a least privilege approach.
  • Apply defense-in-depth strategies.
  • Disable unnecessary accounts and services.
  • Where additional information is needed, refer to existing cybersecurity in medical device guidance issued by the FDA.

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-12-146-01B--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 this vulnerability. This vulnerability is not exploitable remotely.


Contact Information

For any questions related to this report, please contact the CISA at:

Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information:  https://us-cert.cisa.gov/ics 
or incident reporting:  https://us-cert.cisa.gov/report

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