Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2018.0287
Advisory (ICSA-18-025-01) Nari PCS-9611
30 January 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Nari PCS-9611
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
Modify Arbitrary Files -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2018-5447
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-18-025-01
- --------------------------BEGIN INCLUDED TEXT--------------------
Advisory (ICSA-18-025-01)
Nari PCS-9611
Original release date: January 25, 2018 | Last revised: January 26, 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/.
CVSS v3 9.8
ATTENTION: Remotely exploitable/low skill level to exploit. Public exploits
are available.
Vendor: Nari
Equipment: PCS-9611
Vulnerability: Improper Input Validation
AFFECTED PRODUCTS
All versions of the PCS-9611 relay, a control and monitoring unit,
are affected.
IMPACT
Successful exploitation of this vulnerability could allow a remote attacker
arbitrary read/write abilities on the system.
MITIGATION
NCCIC has reached out to Nari but has not received a response.
NCCIC 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.
Locate control system networks and remote devices behind firewalls,
and isolate them from the business network.
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 in the NCCIC Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies, that is available for download from the ICS-CERT web site.
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.
VULNERABILITY OVERVIEW
IMPROPER INPUT VALIDATION CWE-20
An improper input validation vulnerability has been identified that affects
a service within the software that may allow a remote attacker to arbitrarily
read/access system resources and affect the availability of the system.
CVE-2018-5447 has been assigned to this vulnerability. A CVSS v3
base score of 9.8 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
RESEARCHER
Kirill Nesterov and Alexey Osipov from Kaspersky Labs reported the
vulnerability to NCCIC.
BACKGROUND
Critical Infrastructure Sectors: Energy
Countries/Areas Deployed: Asia
Company Headquarters Location: China
Contact Information
For any questions related to this report, please contact the NCCIC at:
Email: NCCICCUSTOMERSERVICE@hq.dhs.gov
Toll Free: 1-888-282-0870
For industrial control systems cybersecurity information:
http://ics-cert.us-cert.gov
or incident reporting: https://ics-cert.us-cert.gov/Report-Incident?
The NCCIC 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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=qcQU
-----END PGP SIGNATURE-----