ESB-2018.0286 - ALERT [Win] Philips IntelliSpace Cardiovascular: Access privileged data - Console/physical 2018-01-30

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0286
         Philips IntelliSpace Cardiovascular System Vulnerability
                              30 January 2018

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

Product:           Philips IntelliSpace Cardiovascular
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Access Privileged Data -- Console/Physical
Resolution:        Mitigation
CVE Names:         CVE-2018-5438  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSMA-18-025-01

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Advisory (ICSMA-18-025-01)

Philips IntelliSpace Cardiovascular System Vulnerability

Original release date: January 25, 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/.

OVERVIEW

Philips reported an insufficient session expiration vulnerability in
the Philips' IntelliSpace Cardiovascular cardiac image and information
management systems. Philips is creating a software update to mitigate this
vulnerability in the affected products.

AFFECTED PRODUCTS

Philips reports that the vulnerability affects the following versions of
the IntelliSpace Cardiovascular:

    IntelliSpace Cardiovascular, Version 2.3.0 and prior.

IMPACT

Successful exploitation of this vulnerability could allow an attacker to
gain unauthorized access to sensitive information stored on the system
and modify this information.

Impact to individual organizations depends on many factors that are unique
to each organization. NCCIC recommends that organizations evaluate the
impact of this vulnerability based on their operational environment and
specific clinical usage.

BACKGROUND

Philips is a global company that maintains offices in many countries around
the world, including countries in Africa, Asia, Europe, Latin America,
the Middle East, and North America.

The Philips IntelliSpace Cardiovascular (ISCV) is both a comprehensive
cardiac image and information management system.

According to Philips, ISCV cardiac image and information management systems
are deployed across the Healthcare and Public Health sector. Philips
estimates this product is used worldwide.

VULNERABILITY CHARACTERIZATION

VULNERABILITY OVERVIEW

INSUFFICIENT SESSION EXPIRATION CWE-613

The ISCV application has an insufficient session expiration vulnerability
where an attacker could reuse the session of a previously logged in
user. This vulnerability exists when using ISCV together with an Electronic
Medical Record (EMR) system, where ISCV is in KIOSK mode for multiple
users and using Windows authentication. This may allow an attacker to gain
unauthorized access to patient health information and potentially modify
this information.

CVE-2018-5438 has been assigned to this vulnerability. A CVSS v3
base score of 6.7 have been assigned; the CVSS vector string is
(AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N).

VULNERABILITY DETAILS

EXPLOITABILITY

This vulnerability is exploitable via local access.

EXISTENCE OF EXPLOIT

No known public exploits specifically target this vulnerability.

DIFFICULTY

An attacker with a low skill level would be able to exploit this
vulnerability.

MITIGATION

Philips is adding an additional configuration option to ISCV 3.1. The
option to not use Windows authentication when communicating with an EMR
in KIOSK mode will become available in this release. Philips is in the
process of releasing this version in the coming months.

Users with questions regarding their specific IntelliSpace Cardiovascular
installations are advised by Philips to contact their local Philips
service support team or their regional service support. Philips' contact
information is available at the following location:

http://www.usa.philips.com/healthcare/solutions/customer-service-solutions
(link is external)

Please see the Philips product security web site for the latest security
information for Philips products:

https://www.philips.com/productsecurity (link is external)

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

    Minimize network exposure for all medical devices and/or systems,
    and ensure that they are not accessible from the Internet.
    Locate all medical devices and remote devices behind firewalls, and
    isolate them from the business network.
    When remote access is required, use secure methods, such as Virtual
    Private Networks (VPNs), recognizing that VPNs may have vulnerabilities
    and should be updated to the most current version available. Also
    recognize that VPN is only as secure as the connected devices.

NCCIC also provides a section for control systems security recommended
practices on the ICS-CERT web page. NCCIC reminds organizations to perform
proper impact analysis and risk assessment prior to deploying defensive
measures.

Additional mitigation guidance and recommended practices are
publicly available in the NCCIC Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies, that is available for download from the ICS-CERT web site.

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.

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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