-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.1155
         Advisory (icsma-20-091-01) BD Pyxis MedStation and Pyxis
                        Anesthesia (PAS) ES System
                               2 April 2020

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           BD Pyxis MedStation
                   Pyxis Anesthesia ES System
Publisher:         ICS
Operating System:  Network Appliance
Impact/Access:     Access Confidential Data -- Console/Physical
                   Unauthorised Access      -- Console/Physical
Resolution:        Mitigation
CVE Names:         CVE-2020-10598  

Original Bulletin: 
   https://www.us-cert.gov/ics/advisories/icsma-20-091-01

- --------------------------BEGIN INCLUDED TEXT--------------------

ICS Medical Advisory (ICSMA-20-091-01)

BD Pyxis MedStation and Pyxis Anesthesia (PAS) ES System

Original release date: March 31, 2020

Legal Notice

All information products included in https://us-cert.gov/ics are provided"as
is" for informational purposes only. The Department of Homeland Security (DHS)
does not provide any warranties of any kind regarding any information contained
within. DHS does not endorse any commercial product or service, referenced in
this product or otherwise. Further dissemination of this product is governed by
the Traffic Light Protocol (TLP) marking in the header. For more information
about TLP, see https://www.us-cert.gov/tlp/ .



1. EXECUTIVE SUMMARY

  o CVSS v3 6.8
  o ATTENTION: Low skill level to exploit
  o Vendor: Becton, Dickinson and Company (BD)
  o Equipment: Pyxis MedStation and Pyxis Anesthesia (PAS) ES System
  o Vulnerability: Protection Mechanism Failure

2. RISK EVALUATION

The affected BD medical devices utilize a method of software application
implementation called "kiosk mode." This kiosk mode is vulnerable to local
breakouts, which could allow an attacker with physical access to bypass kiosk
mode and view and/or modify sensitive data.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Pyxis MedStation and Anesthesia (PAS) ES Systems, are
affected:

  o Pyxis MedStation ES System, v1.6.1
  o Pyxis Anesthesia (PAS) ES System, v1.6.1

3.2 VULNERABILITY OVERVIEW

3.2.1 PROTECTION MECHANISM FAILURE CWE-693

A restricted desktop environment escape vulnerability exists in the kiosk mode
functionality of affected devices. Specially crafted inputs could allow the
user to escape the restricted environment, resulting in access to sensitive
data.

CVE-2020-10598 has been assigned to this vulnerability. A CVSS v3 base score of
6.8 has been calculated; the CVSS vector string is ( AV:P/AC:L/PR:N/UI:N/S:U/
C:H/I:H/A:H ).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

BD reported this vulnerability to CISA.

4. MITIGATIONS

BD recommends the following mitigations and compensating controls in order to
reduce risk associated with this vulnerability:

  o Limit physical access of the Pyxis Medstation ES and Anesthesia (PAS) ES
    System to only authorized users.
  o Isolate impacted systems and only connect them to trusted systems.
  o Monitor and investigate unplanned reboots of systems using network
    monitoring tools provided by IT departments.

Additionally, BD is in the process of deploying a security update that
strengthens kiosk mode to limit currently known methods of kiosk escape in
Pyxis MedStation and Pyxis Anesthesia (PAS) ES System Version 1.6.1. Access to
tools for viewing or manipulating local resources will be restricted.

For more information on this issue, please see the associated BD product
security bulletin on the BD website.

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

  o Ensure there is physical protections in place to prevent the devices from
    any unauthorized access.
  o Encourage security awareness throughout the hospital staff to ensure
    clinical staff will report any unauthorized person trying to login or
    otherwise tamper with a medical device.
  o 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.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 this vulnerability. This
vulnerability is not exploitable remotely.

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

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

CISA continuously strives to improve its products and services. You can help by
choosing one of the links below to provide feedback about this product.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=eiUH
-----END PGP SIGNATURE-----