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-----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). 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