-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.1310
   ICS Advisory (icsa-20-105-03) Triangle MicroWorks SCADA Data Gateway
                               15 April 2020

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Triangle MicroWorks SCADA Data Gateway
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
                   Access Confidential Data        -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-10615 CVE-2020-10613 CVE-2020-10611

Original Bulletin: 
   https://www.us-cert.gov/ics/advisories/icsa-20-105-03

- --------------------------BEGIN INCLUDED TEXT--------------------

ICS Advisory (ICSA-20-105-03)

Triangle MicroWorks SCADA Data Gateway

Original release date: April 14, 2020

Legal Notice

All information products included in https://us-cert.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://www.us-cert.gov/tlp/ .



1. EXECUTIVE SUMMARY

  o CVSS v3 9.8
  o ATTENTION : Exploitable remotely/low skill level to exploit
  o Vendor : Triangle MicroWorks
  o Equipment : SCADA Data Gateway
  o Vulnerabilities : Stacked-based Buffer Overflow, Out-of-Bounds Read, Type
    Confusion

2. RISK EVALUATION

These vulnerabilities allow remote attackers to execute arbitrary code and
disclose on affected installations of Triangle Microworks SCADA Data Gateway
with DNP3 Outstation channels. Authentication is not required to exploit these
vulnerabilities.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of SCADA Data Gateway software are affected:

  o 3.02.0697 through 4.0.122
  o 2.41.0213 through 4.0.122

3.2 VULNERABILITY OVERVIEW

3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121

This vulnerability allows remote attackers cause a denial-of-service condition
due to a lack of proper validation of the length of user-supplied data, prior
to copying it to a fixed-length stack-based buffer. Authentication is not
required to exploit this vulnerability.

CVE-2020-10615 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/C:N/
I:N/A:H ).

3.2.2 OUT-OF-BOUNDS READ CWE-125

This vulnerability allows remote attackers to disclose sensitive information
due to the lack of proper validation of user-supplied data, which can result in
a read past the end of an allocated structure. Authentication is not required
to exploit this vulnerability. Only applicable to installations using DNP3 Data
Sets.

CVE-2020-10613 has been assigned to this vulnerability. A CVSS v3 base score of
5.3 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/C:L/
I:N/A:N ).

3.2.3 ACCESS OF RESOURCE USING INCOMPATIBLE TYPE ('TYPE CONFUSION') CWE-843

This vulnerability allows remote attackers to execute arbitrary code due to the
lack of proper validation of user-supplied data, which can result in a type
confusion condition. Authentication is not required to exploit this
vulnerability. Only applicable to installations using DNP3 Data Sets.

CVE-2020-10611 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 ).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Incite Team of Steven Seeley and Chris Anastasio, and Tobias Scharnowski,
Niklas Breitfeld, and Ali Abbasi working with Trend Micro's Zero Day Initiative
reported these vulnerabilities to CISA.

4. MITIGATIONS

Triangle Microworks recommends users update to Version 4.0.123

Please contact Triangle MicroWorks support for additional details.

CISA 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.

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.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.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.

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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=UlVk
-----END PGP SIGNATURE-----