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AUSCERT External Security Bulletin Redistribution
ESB-2020.1310
ICS Advisory (icsa-20-105-03) Triangle MicroWorks SCADA Data Gateway
15 April 2020
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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
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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.
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