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AUSCERT External Security Bulletin Redistribution
ESB-2020.3532
ICS Advisory (ICSA-20-287-04) - Fieldcomm Group HART-IP and hipserver
14 October 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Fieldcomm Group HART-IP and hipserver
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-16209
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-20-287-04
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ICS Advisory (ICSA-20-287-04)
Fieldcomm Group HART-IP and hipserver
Original release date: October 13, 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: Fieldcomm Group
o Equipment: HARP-IP Developer kit, hipserver
o Vulnerability: Stack-based Buffer Overflow
2. RISK EVALUATION
Successful exploitation of this vulnerability could crash the device being
accessed; a buffer overflow condition may allow remote code execution.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following products and versions are affected:
o HART-IP Developer kit, Release 1.0.0.0
o hipserver, Release 3.6.1
3.2 VULNERABILITY OVERVIEW
3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121
A malicious attacker could exploit this interface by constructing HART-IP
messages with sufficiently large payloads to overflow the internal buffer and
crash the device, or obtain control of the device.
CVE-2020-16209 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 ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Critical
Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
Reid Wightman from Dragos, Inc., reported this vulnerability to Fieldcomm.
4. MITIGATIONS
Fieldcomm Group recommends users restrict access to the computers or devices
running the software. Users of hipserver should immediately upgrade source code
to v3.7.0 or later. For technical support, please visit https://
support.fieldcommgroup/ and file a support ticket. For more information, please
see the Fieldcomm Group security page .
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 this vulnerability.
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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