Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2018.2406
Advisory (ICSMA-18-228-01) Philips PageWriter TC10, TC20,
TC30, TC50, and TC70 Cardiographs
17 August 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Philips PageWriter
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Unauthorised Access -- Console/Physical
Resolution: Patch/Upgrade
CVE Names: CVE-2018-14801 CVE-2018-14799
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSMA-18-228-01
- --------------------------BEGIN INCLUDED TEXT--------------------
Advisory (ICSMA-18-228-01)
Philips PageWriter TC10, TC20, TC30, TC50, and TC70 Cardiographs
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
o CVSS v3 6.1
o ATTENTION: Low skill level to exploit
o Vendor: Philips
o Equipment: PageWriter TC10, TC20, TC30, TC50, TC70 Cardiographs
o Vulnerabilities: Improper Input Validation, Use of Hard Coded Credentials
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow buffer overflows,
or allow an attacker to access and modify settings on the device.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of PageWriter TC10, TC20, TC30, TC50, TC70 Cardiographs
are affected:
o All versions prior to May 2018.
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER INPUT VALIDATION CWE-20
The PageWriter device does not sanitize data entered by user. This can lead to
buffer overflow or format string vulnerabilities.
CVE-2018-14799 has been assigned to this vulnerability. A CVSS v3 base score
of 5.9 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:N/S:U
/C:L/I:L/A:L).
3.2.2 USE OF HARD-CODED CREDENTIALS CWE-798
An attacker with both the superuser password and physical access can enter the
superuser password that can be used to access and modify all settings on the
device, as well as allow the user to reset existing passwords.
CVE-2018-14801 has been assigned to this vulnerability. A CVSS v3 base score
of 6.1 has been calculated; the CVSS vector string is (AV:P/AC:L/PR:H/UI:R/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: Netherlands
3.4 RESEARCHER
Philips reported these vulnerabilities to NCCIC.
4. MITIGATIONS
Philips plans an update to correct these issues in the release scheduled for
mid-year 2019.
Philips has also provided the following information regarding an operating
system that is no longer supported by the operating system manufacturer:
o WinCE5 is an obsolete operating system, which is no longer supported by
the operating system manufacturer and only applies to PageWriter TC20,
TC30, TC50 and TC70.
o PageWriter TC50 and TC70 support WinCE7, which is available for download
on InCenter by customers. Philips recommends replacing the TC20 and TC30
with the TC50 if customers are concerned about the obsolete operating
system. For TC20, there will be an update to a supported operating system
released by end of 2019.
Philips offers the following additional mitigation advice:
o Defense in depth
o Physical security is a foundational requirement
o For medical devices such as a PageWriter, controlling access to the system
components provides key protection to the medical devices in the system.
o Physical security is a combination of policy, procedure and practice to
control and monitor who has physical access.
o For medical devices, physical security provides multifactor authentication
(the user physically must be at the device and provide something they
know).
Philips' contact information is available at the following location:
http://www.usa.philips.com/healthcare/solutions/customer-service-solutions
The Philips' advisory is available at the following location (Link is
external):
http://www.philips.com/productsecurity
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 on the ICS-CERT website 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 NCCIC for
tracking and correlation against other incidents.
No known public exploits specifically target these vulnerabilities. These
vulnerabilities are not exploitable remotely.
- --------------------------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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=/RWI
-----END PGP SIGNATURE-----