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AUSCERT External Security Bulletin Redistribution
ESB-2019.2764
Advisory (icsa-19-204-02) NREL EnergyPlus
24 July 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: NREL EnergyPlus
Publisher: ICS-CERT
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-10974
Original Bulletin:
https://www.us-cert.gov/ics/advisories/icsa-19-204-02
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ICS Advisory (ICSA-19-204-02)
NREL EnergyPlus
Original release date: July 23, 2019
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/ .
1. EXECUTIVE SUMMARY
o CVSS v3 6.1
o ATTENTION: Low skill level to exploit
o Vendor: National Renewable Energy Laboratory (NREL)
o Equipment: EnergyPlus
o Vulnerability: Stack-based Buffer Overflow
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to
execute arbitrary code or cause a denial-of-service condition.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of EnergyPlus, an Energy simulation program, are
affected:
o EnergyPlus Versions 8.6.0 and potentially prior releases
3.2 VULNERABILITY OVERVIEW
3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121
The application fails to prevent an exception handler from being overwritten
with arbitrary code.
CVE-2019-10974 has been assigned to this vulnerability. A CVSS v3 base score of
6.1 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:L/UI:N/S:U/
C:N/I:H/A:L ).
3.3 BACKGROUND
CRITICAL INFRASTRUCTURE SECTORS: Energy
COUNTRIES/AREAS DEPLOYED: United States
COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
Karn Ganeshen reported this vulnerability to CISA.
4. MITIGATIONS
It is recommended that users update the application to the latest available
release, v9.0.1 or later, available at the following location:
https://energyplus.net/
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:
o Restrict system access to authorized personnel only and follow a least
privilege approach.
o Apply defense-in-depth strategies.
o Disable unnecessary accounts and services.
CISAreminds 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
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 CISAfor tracking
and correlation against other incidents.
No known public exploits specifically target this vulnerability. This
vulnerability is not exploitable remotely.
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