ESB-2018.1270 - [Appliance] BD Pyxis products: Multiple vulnerabilities 2018-04-26

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1270
                    Advisory (ICSMA-18-114-01) BD Pyxis
                               26 April 2018

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

Product:           BD Pyxis products
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Access Privileged Data         -- Remote/Unauthenticated      
                   Provide Misleading Information -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-13088 CVE-2017-13087 CVE-2017-13086
                   CVE-2017-13082 CVE-2017-13081 CVE-2017-13080
                   CVE-2017-13079 CVE-2017-13078 CVE-2017-13077

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSMA-18-114-01

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Advisory (ICSMA-18-114-01)

BD Pyxis

Original release date: April 24, 2018

Legal Notice

All information products included in http://ics-cert.us-cert.gov 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 http://www.us-cert.gov/tlp/.

1. EXECUTIVE SUMMARY

    CVSS v3 6.8
    ATTENTION: Public exploits are available.
    Vendor: Becton, Dickinson and Company (BD)
    Equipment: Certain BD Pyxis Products
    Vulnerability: Reusing a Nonce

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow data traffic
manipulation, resulting in partial disclosure of encrypted communication
or injection of data.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of BD Pyxis products, a medication and supply
management system, are affected:

    BD Pyxis Anesthesia ES,
    BD Pyxis Anesthesia System 4000,
    BD Pyxis Anesthesia System 3500,
    BD Pyxis MedStation 4000 T2,
    BD Pyxis MedStation ES,
    BD Pyxis SupplyStation,
    BD Pyxis Supply Roller,
    BD Pyxis ParAssist System,
    BD Pyxis PARx,
    BD Pyxis CIISafe - Workstation,
    BD Pyxis StockStation System, and
    BD Pyxis Parx handheld

3.2 VULNERABILITY OVERVIEW

3.2.1   REUSING A NONCE, KEY PAIR IN ENCRYPTION CWE-323

An industry-wide vulnerability exists in the WPA and WPA2 protocol
affected by the Key Reinstallation Attacks known as KRACK. The four-way
hand shake traffic in the Wi-Fi Protected Access WPA and WPA2 protocol can
be manipulated to allow nonce reuse resulting in key reinstallation. This
could allow an attacker to execute a "man-in-the-middle" attack,
enabling the attacker within radio range to replay, decrypt, or spoof frames.

The following CVEs have been assigned to this group of vulnerabilities:

CVE-2017-13077: Reinstallation of the pairwise key during the four-way
handshake.

CVE-2017-13078: Reinstallation of the group key during the four-way
handshake.

CVE-2017-13079: Reinstallation of the Integrity Group Temporal Key (IGTK)
during the four-way handshake.

CVE-2017-13080: Reinstallation of the group key during the group key
handshake.

CVE-2017-13081: Reinstallation of the IGTK during the group key handshake.

CVE-2017-13082: Reinstallation of the Pairwise Transient Key (PTK) Temporal
Key (TK) during the fast BSS transmission (FT) handshake.

CVE-2017-13086: Reinstallation of the Tunneled Direct-Link Setup (TDLS)
Peer Key (TPK) during the TDLS handshake.

CVE-2017-13087: Reinstallation of the Group Temporal Key (GTK) when
processing a Wireless Network Management (WNM) Sleep Mode Response frame.

CVE-2017-13088: Reinstallation of the IGTK when processing a WNM Sleep
Mode Response frame.

A CVSS v3 base score of 6.8 has been calculated; the CVSS vector string is
(AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

3.3 BACKGROUND

    Critical Infrastructure Sectors: Healthcare and Public Health
    Countries/Areas Deployed: Worldwide
    Company Headquarters Location: New Jersey

3.4 RESEARCHER

Mathy Vanhoef of imec-DistriNet, KU Leuven discovered the KRACK
vulnerabilities. BD reported to NCCIC that the KRACK vulnerabilities may
possibly affect these products.

4. MITIGATIONS

BD has implemented third-party vendor patches through BD's routine
patch deployment process that resolves these vulnerabilities for most
devices. Some devices require coordination with BD. BD is in the process
of contacting users to schedule and deploy patches. There is currently
no reported verified instance of the KRACK vulnerability being exploited
maliciously against BD devices.

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

    Ensure the latest recommended updates for Wi-Fi access points have
    been implemented in Wi-Fi enabled networks
    Ensure appropriate physical controls are in place to prevent attackers
    from being within physical range of an affected Wi-Fi access point
    and client
    Ensure data has been backed up and stored according to individual
    processes and disaster recovery procedures

BD has published a product security bulletin to notify users about this
issue and to provide additional mitigation counsel.  It can be found at
the following location on their web page:

http://www.bd.com/en-us/support/product-security-and-privacy/product-security-bulletin-for-wpa2-krack-wi-fi-vulnerability

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 in the ICS-CERT Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies, that is available for download from the ICS-CERT website.

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.

These vulnerabilities have been publicly disclosed. These vulnerabilities are
exploitable from an adjacent network. High skill level is needed to exploit.

Contact Information

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

Email: NCCICCUSTOMERSERVICE@hq.dhs.gov
Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information:
http://ics-cert.us-cert.gov
or incident reporting:  https://ics-cert.us-cert.gov/Report-Incident?

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

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