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AUSCERT External Security Bulletin Redistribution
Advisory (ICSMA-18-228-01) Philips PageWriter TC10, TC20,
TC30, TC50, and TC70 Cardiographs
17 August 2018
AusCERT Security Bulletin Summary
Product: Philips PageWriter
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Unauthorised Access -- Console/Physical
CVE Names: CVE-2018-14801 CVE-2018-14799
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Philips PageWriter TC10, TC20, TC30, TC50, and TC70 Cardiographs
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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
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
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
o CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Netherlands
Philips reported these vulnerabilities to NCCIC.
Philips plans an update to correct these issues in the release scheduled for
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
Philips' contact information is available at the following location:
The Philips' advisory is available at the following location (Link is
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
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.
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