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AUSCERT External Security Bulletin Redistribution
ESB-2021.3946
Advisory (icsma-21-322-01) Philips IntelliBridge EC 40 and EC 80 Hub
19 November 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Philips IntelliBridge EC 40 and EC 80 Hub
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Modify Arbitrary Files -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2021-33017 CVE-2021-32993
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsma-21-322-01
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ICS Medical Advisory (ICSMA-21-322-01)
Philips IntelliBridge EC 40 and EC 80 Hub
Original release date: November 18, 2021
Legal Notice
All information products included in https://us-cert.cisa.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://us-cert.cisa.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 8.1
o ATTENTION: Low attack complexity
o Vendor: Philips
o Equipment: IntelliBridge EC 40 and EC 80 Hub
o Vulnerabilities: Use of Hard-coded Credentials, Authentication Bypass Using
an Alternate Path or Channel
2. RISK EVALUATION
Successful exploitation of these vulnerabilities may allow an attacker
unauthorized access to the IntelliBridge EC40 and80 Hub. This could allow an
attacker to execute software, modify system configurations, or view/update
files, including unidentifiable patient data.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of IntelliBridge are affected:
o IntelliBridge EC 40 Hub, C.00.04 and prior
o IntelliBridge EC 80 Hub, C.00.04 and prior
3.2 VULNERABILITY OVERVIEW
3.2.1 USE OF HARD-CODED CREDENTIALS CWE-798
The software contains hard-coded credentials, such as a password or a
cryptographic key, which it uses for its own inbound authentication, outbound
communication to external components, or encryption of internal data.
CVE-2021-32993 has been assigned to this vulnerability. A CVSS v3 base score of
8.1 has been calculated; the CVSS vector string is ( AV:A/AC:L/PR:N/UI:N/S:U/
C:N/I:H/A:H ).
3.2.2 AUTHENTICATION BYPASS USING AN ALTERNATE PATH OR CHANNEL CWE-288
The standard access path of the affected product requires authentication, but
the product has an alternate path or channel that does not require
authentication.
CVE-2021-33017 has been assigned to this vulnerability. A CVSS v3 base score of
8.1 has been calculated; the CVSS vector string is ( AV:A/AC:L/PR:N/UI:N/S:U/
C:N/I:H/A:H ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Netherlands
3.4 RESEARCHER
Younes Dragoni, Andrea Palanca and Ivan Speziale of Nozomi Networks reported
these vulnerabilities to CISA.
4. MITIGATIONS
Philips plans to make a new release to remediate these vulnerabilities by the
end of Q4 2021.
As an interim mitigation to these vulnerabilities, Philips recommends the
following:
o Users should operate all Philips deployed and supported products within
Philips authorized specifications, including Philips approved software,
software configuration, system services, and security configuration.
o The medical device network should be logically or physically isolated from
the hospital network as specified in the Philips Patient Monitoring System
Security for Clinical Networks guide, available on Philips InCenter. There
is no clinical requirement for these devices to communicate outside of the
Philips clinical network.
Users with questions about their specific EC 40 and EC 80 Hub products should
contact the Philips service support team or regional service support. Philips
contact information is available on the Philips customer service solutions
website , or via phone (U.S.) at 1-800-722-9377.
The IntelliBridge EC 40 and EC 80 Hub is intended to transfer medical device
data from one format to another according to preset specifications. It performs
data transfer without controlling or altering the function or parameters of any
connected medical devices. The EC 40 and EC 80 Hub are not intended for use in
connection with active patient monitoring. If data is not received from the hub
a notification is generated on the PIC iX Central Station and users are advised
to refer to the source medical device.
More information on these vulnerabilities, as well as the latest security
information for Philips products, is available on the Philips product security
website .
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:
o Minimize network exposure for all control system devices and/or systems,
and ensure that they are not accessible from the Internet .
o Locate control system networks and remote devices behind firewalls, and
isolate them from the business network.
o When remote access is required, use secure methods, such as Virtual Private
Networks (VPNs), recognizing VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize VPN is only
as secure as its connected devices.
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 these vulnerabilities. These
vulnerabilities are 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.
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