Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2019.2521
Advisory (icsa-19-190-01) Emerson DeltaV Distributed Control System
10 July 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Emerson DeltaV Distributed Control System
Publisher: ICS-CERT
Operating System: Windows
Impact/Access: Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-11691
Original Bulletin:
https://www.us-cert.gov/ics/advisories/icsa-19-190-01
- --------------------------BEGIN INCLUDED TEXT--------------------
ICS Advisory (ICSA-19-190-01)
Emerson DeltaV Distributed Control System
Original release date: July 09, 2019
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
o CVSS v3 6.1
o ATTENTION: Low skill level to exploit
o Vendor: Emerson
o Equipment: DeltaV Distributed Control System (DCS)
o Vulnerability: Use of Hard-coded Credentials
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to gain
administrative access to DeltaV Smart Switches.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of DeltaV DCS, a software management platform, include
the vulnerable Smart Switch Command Center:
o 11.3.x
o 12.3.x
3.2 VULNERABILITY OVERVIEW
3.2.1 USE OF HARD-CODED CREDENTIALS CWE-798
The Smart Switch Command Center does not change the DeltaV Smart Switch
management account password upon commissioning as expected, leaving the default
password in effect indefinitely.
CVE-2018-11691 has been assigned to this vulnerability. A CVSS v3 base score of
6.1 has been calculated; the CVSS vector string is ( AV:A/AC:L/PR:H/UI:N/S:U/
C:N/I:H/A:H ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Chemical, Critical Manufacturing, Energy
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
Benjamin Crosasso of Sanofi reported this vulnerability to Emerson.
4. MITIGATIONS
Emerson recommends users patch affected products. Details are available within
article DSN19003 (KBA# NK-1900-0808). Software patches and DSN19003 are
available to users with access to the Emerson Guardian Support Portal at the
following link:
https://guardian.emersonprocess.com/ (Login Required)
To limit exposure to these and other vulnerabilities, Emerson recommends that
DeltaV systems and related components be deployed and configured as described
in the DeltaV security manual, which can be found in Emerson's Guardian Support
Portal.
NCCIC recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. 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 this vulnerability. This
vulnerability is not exploitable remotely.
- --------------------------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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=EaXy
-----END PGP SIGNATURE-----