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AUSCERT External Security Bulletin Redistribution
ESB-2020.2148
Advisory (icsa-20-170-01) Johnson Controls exacqVision
22 June 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Johnson Controls exacqVision
Publisher: US-CERT
Operating System: Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2020-9047
Original Bulletin:
https://www.us-cert.gov/ics/advisories/icsa-20-170-01
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ICS Advisory (ICSA-20-170-01)
Johnson Controls exacqVision
Original release date: June 18, 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 6.8
o ATTENTION: Exploitable remotely
o Vendor: Exacq Technologies, a subsidiary of Johnson Controls
o Equipment: exacqVision
o Vulnerability: Improper Verification of Cryptographic Signature
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker with
administrative privileges to potentially download and run a malicious
executable that could allow the execution of operating system commands on the
system.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
Johnson Controls reports the vulnerability affects the following exacqVision
products:
o exacqVision Web Service: All versions up to and including v20.03.2.0
o exacqVision Enterprise Manager: All versions up to and including v20.03.3.0
3.2 VULNERABILITY OVERVIEW
3.2.1 IMPROPER VERIFICATION OF CRYPTOGRAPHIC SIGNATURE CWE-347
The software does not verify the cryptographic signature for data, which could
allow an attacker with administrative privileges to download and run a
malicious executable.
CVE-2020-9047 has been assigned to this vulnerability. A CVSS v3 base score of
6.8 has been calculated; the CVSS vector string is ( AV:N/AC:H/PR:H/UI:R/S:C/
C:L/I:H/A:L ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Ireland
3.4 RESEARCHER
Michael Norris reported this vulnerability to Johnson Controls.
4. MITIGATIONS
Johnson Controls recommends the following mitigations:
o Upgrade exacqVision Web Service to v20.06.2.0 or higher
o Upgrade exacqVision Enterprise Manager to v20.06.3.0 or higher
For more detailed mitigation instructions, please see Johnson Controls Product
Security Advisory JCI-PSA-2020-7 v1
Johnson Controls recommends taking steps to minimize risks to all building
automation systems.
CISA recommends users take the following measures to protect themselves from
social engineering attacks:
o Ensure the least-privilege user principle is followed.
o Do not click web links or open unsolicited attachments in email messages.
o Refer to Recognizing and Avoiding Email Scams for more information on
avoiding email scams.
o Refer to Avoiding Social Engineering and Phishing Attacks for more
information on social engineering attacks.
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. High skill
level is needed to exploit.
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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