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AUSCERT External Security Bulletin Redistribution
ESB-2021.0075
Advisory (icsma-21-007-01) Innokas Yhtyma Oy Vital Signs Monitor
8 January 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Innokas Yhtyma Oy Vital Signs Monitor
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Cross-site Scripting -- Existing Account
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-27262 CVE-2020-27260
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsma-21-007-01
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ICS Medical Advisory (ICSMA-21-007-01)
Innokas Yhtyma Oy Vital Signs Monitor
Original release date: January 07, 2021
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information contained within. DHS does not endorse any commercial product or
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For more information about TLP, see https://us-cert.cisa.gov/tlp/.
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1. EXECUTIVE SUMMARY
* CVSS v3 5.3
* ATTENTION: Exploitable remotely/low skill level to exploit
* Vendor: Innokas Yhtyma Oy
* Equipment: Vital Signs Monitor VC150
* Vulnerabilities: Cross-site Scripting, Improper Neutralization of Special
Elements in Output Used by a Downstream Component
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to
modify communications between downstream devices or cause some features of the
affected devices to become disabled.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of Innokas Yhtyma Oy Vital Signs Monitors are affected:
* VC150 prior to Version 1.7.15
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION
('CROSS-SITE SCRIPTING') CWE-79
A stored cross-site scripting (XSS) vulnerability exists in the affected
products that allow an attacker to inject arbitrary web script or HTML via the
filename parameter to multiple update endpoints of the administrative web
interface.
CVE-2020-27262 has been assigned to this vulnerability. A CVSS v3 base score of
4.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:R/S:U/C:L
/I:L/A:N).
3.2.2 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS IN OUTPUT USED BY A
DOWNSTREAM COMPONENT CWE-74
HL7 v2.x injection vulnerabilities exist in the affected products that allow
physically proximate attackers with a connected barcode reader to inject HL7
v2.x segments into specific HL7 v2.x messages via multiple expected parameters.
CVE-2020-27260 has been assigned to this vulnerability. A CVSS v3 base score of
5.3 has been calculated; the CVSS vector string is (AV:P/AC:L/PR:N/UI:N/S:C/C:N
/I:H/A:N).
3.3 BACKGROUND
* CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health
* COUNTRIES/AREAS DEPLOYED: Worldwide
* COMPANY HEADQUARTERS LOCATION: Finland
3.4 RESEARCHER
Julian Suleder, Nils Emmerich, and Birk Kauer of ERNW Research GmbH; and Dr.
Oliver Matula of ERNW Enno Rey Netzwerke GmbH reported these vulnerabilities to
the Federal Office for Information Security (BSI), Germany, in the context of
the BSI project ManiMed (Manipulation of medical devices).
4. MITIGATIONS
Innokas Yhtyma Oy recommends users update to the latest Version 1.7.15b or
later. Software Version 1.7.15b mitigates reported vulnerabilities.
Additionally, the following mitigations are available:
* Where possible, utilize hospital network best practices such as network
segmentation utilizing VLANs, and device isolation to enhance existing
security measures.
* Ensure there are physical protections in place to prevent the devices from
any unauthorized access.
* Encourage security awareness throughout the hospital staff to ensure
clinical staff will report any unauthorized person trying to login or
otherwise tamper with a medical device.
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:
* Minimize network exposure for all control system devices and/or systems,
and ensure that they are not accessible from the Internet.
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.
Contact Information
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
For industrial control systems cybersecurity information: https://
us-cert.cisa.gov/ics
or incident reporting: https://us-cert.cisa.gov/report
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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