Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2021.2625
Advisory (icsma-21-215-01) Swisslog Healthcare Translogic PTS
4 August 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Swisslog Healthcare Translogic PTS
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Root Compromise -- Existing Account
Unauthorised Access -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-37167 CVE-2021-37166 CVE-2021-37165
CVE-2021-37164 CVE-2021-37163 CVE-2021-37162
CVE-2021-37161 CVE-2021-37160
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsma-21-215-01
- --------------------------BEGIN INCLUDED TEXT--------------------
ICS Medical Advisory (ICSMA-21-215-01)
Swisslog Healthcare Translogic PTS
Original release date: August 03, 2021
Legal Notice
All information products included in https://us-cert.cisa.gov/ics 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 https://us-cert.cisa.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 9.8
o ATTENTION: Exploitable remotely/low attack complexity
o Vendor: Swisslog Healthcare
o Equipment: Translogic PTS (Pneumatic Tube Systems)
o Vulnerabilities: Use of Hard-coded Password, Execution with Unnecessary
Privileges, Improper Authentication, Download of Code without Integrity
Check, Out-of-Bounds Write
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to
gain control of the device, escalate privileges, or execute arbitrary code.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
Swisslog Healthcare reports the vulnerabilities affect the following Translogic
Pneumatic Tube Systems:
o Nexus Control Panel, versions prior to 7.2.5.7
3.2 VULNERABILITY OVERVIEW
3.2.1 USE OF HARD-CODED PASSWORD CWE-259
User and root accounts have hardcoded passwords that can be accessed remotely
on the Nexus Control Panel. These accounts are enabled by default and cannot be
turned off by native configuration of the system.
CVE-2021-37163 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 ).
3.2.2 EXECUTION WITH UNNECESSARY PRIVILEGES CWE-250
A user logged in using the default credentials can gain root access to the
device, which allows permissions for all the functionalities of the device.
CVE-2021-37167 has been assigned to this vulnerability. A CVSS v3 base score of
8.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:U/
C:H/I:H/A:H ).
3.2.3 INTEGER UNDERFLOW CWE-191
A buffer overflow allows an attacker to overwrite an internal queue data
structure, which could allow remote code execution.
CVE-2021-37161 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 ).
3.2.4 INTEGER UNDERFLOW CWE-191
A buffer overflow allows an attacker to overwrite an internal queue data
structure, which could allow remote code execution.
CVE-2021-37162 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 ).
3.2.5 INTEGER UNDERFLOW CWE-191
A specially crafted message to the HMI may cause an overflow, which could allow
remote code execution.
CVE-2021-37165 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 ).
3.2.6 OUT-OF-BOUNDS WRITE CWE-787
Received data can be copied to a stack buffer, resulting in an overflow.
CVE-2021-37164 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 ).
3.2.7 IMPROPER AUTHENTICATION CWE-287
The method used to bind a local service to ports on device interfaces may allow
the connection to be hijacked by an external attacker.
CVE-2021-37166 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 ).
3.2.8 DOWNLOAD OF CODE WITHOUT INTEGRITY CHECK CWE-494
There is no file validation during an upload for an update.
CVE-2021-37160 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:H/A:N ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Healthcare
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
Barak Hadad and Ben Seri from Armis reported these vulnerabilities to Swisslog.
4. MITIGATIONS
Swisslog Healthcare recommends upgrading to the latest software version as soon
as it becomes available. Version 7.2.5.7 is reported to fix all vulnerabilities
above except CVE-2021-37160 . Use the latest version together with mitigation
methods below to protect against exploitation of all the listed
vulnerabilities.
Swisslog also recommends the following mitigation methods until updated
software is deployed:
o Network firewalls that restrict inter-VLAN traffic on the network must
allow inbound and outbound internal network connections for the ports
listed in "Windows firewalls." Do not restrict these ports to specific
applications.
o If there is no firewall between the SCC and the floor devices, apply an
extended access control list (ACL) in the Layer 3 VLAN that is dedicated to
the PTS floor equipment. Both inbound and outbound access lists are
required between the SCC server and floor equipment, allowing the use of
the TCP and UDP ports listed.
o Employ an IDS (intrusion detection system) such as SNORT to detect
exploitation attempts.
Armis recommends the following practices to identify and block attempts to
exploit these issues.
o Block any use of Telnet (Port 23) on the Translogic PTS stations. The
Telnet service is not required in production.
CISA recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. Specifically, users should:
o Ensure the least-privilege user principle is followed.
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 VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize VPN is only
as secure as its connected devices.
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.
CISA also recommends users take the following measures to protect themselves
from social engineering attacks:
o Do not click web links or open unsolicited attachments in email messages.
o Refer to Recognizing and Avoiding Email Scams for more information on
avoiding email scams.
o Refer to Avoiding Social Engineering and Phishing Attacks for more
information on social engineering attacks.
No known public exploits specifically target these vulnerabilities.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
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.
- --------------------------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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=E1zG
-----END PGP SIGNATURE-----