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AUSCERT External Security Bulletin Redistribution
ESB-2019.1386
Advisory (ICSMA-19-113-01) Fujifilm FCR Capsula X/Carbon X
24 April 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Fujifilm FCR Capsula X
Fujifilm FCR Carbon X
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-10950 CVE-2019-10948
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSMA-19-113-01
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Medical Advisory (ICSMA-19-113-01)
Fujifilm FCR Capsula X/Carbon X
Original release date: April 23, 2019
Legal Notice
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For more information about TLP, see http://www.us-cert.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 9.8
o ATTENTION: Exploitable remotely/low skill level to exploit
o Vendor: Fujifilm
o Equipment: FCR Capsula X/Carbon X
o Vulnerabilities: Uncontrolled Resource Consumption, Improper Access Control
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could result in a
denial-of-service condition in affected cassette reader units, causing
potential image loss or device unavailability. Attackers could gain
unauthorized access to the underlying operating system, allowing arbitrary code
execution.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following models and versions of Fujifilm Computed Radiography cassette
readers are affected:
o CR-IR 357 FCR Carbon X
o CR-IR 357 FCR XC-2
o CR-IR 357 FCR Capsula X
3.2 VULNERABILITY OVERVIEW
3.2.1 UNCONTROLLED RESOURCE CONSUMPTION CWE-400
The device is susceptible to a denial-of-service condition as a result of an
overflow of TCP packets, which requires the device to be manually rebooted.
CVE-2019-10948 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/
C:N/I:N/A:H ).
3.2.2 IMPROPER ACCESS CONTROL CWE-284
The device provides insecure telnet services that lack authentication
requirements. An attacker who successfully exploits this vulnerability may be
able to access the underlying operating system.
CVE-2019-10950 has been assigned to this vulnerability. A CVSS v3 base score of
9.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/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: Japan
3.4 RESEARCHER
Marc Ruef and Rocco Gagliardi of Scip AG reported these vulnerabilities to
NCCIC.
4. MITIGATIONS
Fujifilm has stated the CR-IR 357 system can be configured with what they call
Secure Host functionality. This configuration of the software instructs CR-IR
357 to ignore all network traffic other than from the IP address of the
Fujifilm image acquisition console. However, this configuration prevents more
than one image acquisition console to share the CR-IR 357 Reader Unit. If the
user has not implemented Reader Unit sharing, they may contact Fujifilm to
request Secure Host functionality be enabled. If the user has implemented
Reader Unit sharing, they should contact Fujifilm to discuss available options.
Fujifilm can be contacted at 888-FUJI-MED (888-385-4633). Users outside the
United States should contact their Fujifilm contact.
Fujifilm recommends that the first line of defense should be a compensating
control of securing the user's network. Measures should be taken to ensure only
authorized devices and personnel have access to the network. Public or guest
networks should be segmented, or users should use a VLAN to segregate public
traffic from the private network. Administrative and technical controls should
also be implemented.
NCCIC recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. Specifically, users should:
o Minimize network exposure for all medical devices and/or systems, and
ensure that they are not accessible from the Internet .
o Locate medical systems and networks and remote devices behind firewalls,
and isolate them from the business network.
o Restrict system access to authorized personnel only and follow a least
privilege approach.
o Apply defense-in-depth strategies.
o Disable unnecessary accounts and services.
o Where additional information is needed, refer to existing cybersecurity in
medical device guidance issued by the FDA at the following location:
https://www.fda.gov/MedicalDevices/DigitalHealth/ucm373213.htm
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.
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