7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
AI Score
Confidence
High
0.029 Low
EPSS
Percentile
90.8%
Successful exploitation of this vulnerability could allow an attacker on the same network to gain complete control of the deviceβs operating system and allow remote code execution.
The following versions of Delta Controls enteliBUS Controllers, industrial control systems, are affected:
The affected products are vulnerable to a buffer overflow condition due to the lack of input validation, which may allow an attacker to remotely execute arbitrary code.
CVE-2019-9569 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).
Douglas McKee @fulmetalpackets and contributing researcher Mark Bereza @ROPsicle of McAfee Advanced Threat Research reported this vulnerability to Delta Controls.
Delta Controls recommends users upgrade from enteliBUS 3.40 firmware to Version 3.40 R6 build 612850. Delta Controls also states it is important buildings are updated to the 3.40 R6 release to mitigate risk. The firmware is only accessible by Delta Controls registered partners and is not available for public download. To acquire the firmware update, contact a Delta Controls distributor or Delta Controls directly.
In addition to upgrading enteliBUS, Delta Controls recommends the following actions to secure building sites:
For more information on the vulnerability and more detailed mitigation instructions, please see Delta Controls Security Bulletin βSecB0001: enteliBUS 3.40 Controllers Remote Code Execution Vulnerability.β (Login required; only accessible by Delta Controls registered partners and not available for public download.)
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-12-146-01BβTargeted 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.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-9569
cwe.mitre.org/data/definitions/120.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=Delta%20Controls%20enteliBUS%20Controllers+https://www.cisa.gov/news-events/ics-advisories/icsa-19-239-01
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-19-239-01&title=Delta%20Controls%20enteliBUS%20Controllers
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-19-239-01
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-19-239-01
www.us-cert.gov/ics
www.us-cert.gov/ics
www.us-cert.gov/ics/Introduction-Recommended-Practices
www.us-cert.gov/ics/recommended-practices
www.us-cert.gov/ics/tips/ICS-TIP-12-146-01B
www.us-cert.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Delta%20Controls%20enteliBUS%20Controllers&body=www.cisa.gov/news-events/ics-advisories/icsa-19-239-01
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
AI Score
Confidence
High
0.029 Low
EPSS
Percentile
90.8%