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AUSCERT External Security Bulletin Redistribution
ESB-2018.1590
Advisory (ICSMA-18-144-01) BeaconMedaes TotalAlert Scroll
Medical Air Systems
25 May 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: BeaconMedaes TotalAlert Scroll Medical Air Systems
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-7526 CVE-2018-7518 CVE-2018-7515
Reference: ESB-2018.0749
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSMA-18-144-01
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Advisory (ICSMA-18-144-01) BeaconMedaes TotalAlert Scroll Medical Air Systems
Original release date: May 24, 2018
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
CVSS v3 7.5
ATTENTION: Exploitable remotely/low skill level to exploit
Vendor: BeaconMedaes
Equipment: TotalAlert Scroll Medical Air Systems web application
Vulnerabilities: Improper Access Control, Insufficiently Protected
Credentials, Unprotected Storage of Credentials
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to
view and potentially modify some device information and web application setup
information, which does not include access to patient health information.
Additionally, BeaconMedaes has stated that a successful attacker would not be
able to affect the ability of the device to operate as designed for the
purpose of delivering medical air in compliance with the NFPA 99 standard for
healthcare facilities.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following TotalAlert Scroll Medical Air Systems web applications are
affected:
o TotalAlert Scroll Medical Air Systems running software Versions
4107600010.23 and prior.
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER ACCESS CONTROL CWE-284
By accessing a specific uniform resource locator (URL) on the webserver, a
malicious user may be able to access information in the application without
authenticating.
CVE-2018-7526 has been assigned to this vulnerability. A CVSS v3 base score of
5.3 has been calculated; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
3.2.2 INSUFFICIENTLY PROTECTED CREDENTIALS CWE-522
An attacker with network access to the integrated web server could retrieve
default or user defined credentials stored and transmitted in an insecure
manner.
CVE-2018-7518 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:H/I:N/A:N).
3.2.3 UNPROTECTED STORAGE OF CREDENTIALS CWE-256
Passwords are presented in plaintext in a file that is accessible without
authentication.
CVE-2018-7515 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:H/I:N/A:N).
3.3 BACKGROUND
o Critical Infrastructure Sectors: Healthcare and Public Health
o Countries/Areas Deployed: Worldwide
o Company Headquarters Location: U.S.
3.4 RESEARCHER
Maxim Rupp reported these vulnerabilities to NCCIC.
4. MITIGATIONS
BeaconMedaes has stated that the vulnerabilities do not compromise either
patient health information or compliance with the NFPA 99 standard for
healthcare facilities. To address these vulnerabilities, BeaconMedaes has
created update 4107600010.24 and recommends that users of the TotalAlert
Scroll Medical Air Systems update to this version or the latest release.
BeaconMedaes recommends that affected users reach out to BeaconMedaes directly
at 1-888-4MEDGAS (463-3427) to obtain this update.
NCCIC recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. 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 that VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize that VPN is only
as secure as the connected devices.
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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