7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
0.001 Low
EPSS
Percentile
51.0%
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This updated advisory is a follow-up to the original advisory titled ICSA-22-349-01 Prosys OPC UA Simulation Server that was published December 15, 2022, to the ICS webpage on cisa.gov/ics.
Successful exploitation of this vulnerability could allow an attacker to obtain credentials and gain access to system data.
The following version of Prosys OPC UA simulation servers are affected:
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Prosys OPC UA Simulation server v5.03-64 does not sufficiently protect credentials, which could allow an attacker to obtain user credentials and gain access to system data.
CVE-2022-2967 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H).
Parvin Kumar, Dr. Sriharsha Etigowni, and Prof. Dongyan Xu of Purdue University West Lafayette reported this vulnerability to CISA.
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Prosys has released updates for the following products:
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Prosys also recommends additional workarounds to mitigate exploitation of this vulnerability:
For more information, users can refer to the Prosys OPC security blog.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability these vulnerabilities. Specifically, users should:
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 at cisa.gov/ics. Several CISA products detailing cyber defense best 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 at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report 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-2022-2967
cisa.gov/ics
cisa.gov/ics
cwe.mitre.org/data/definitions/522.html
downloads.prosysopc.com/opc-ua-modbus-server-downloads.php
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=Prosys%20OPC%20UA%20Simulation%20Server%20%28Update%20A%29+https://www.cisa.gov/news-events/ics-advisories/icsa-22-349-01
us-cert.cisa.gov/ics/Recommended-Practices
us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:H/UI:R/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-22-349-01
www.oig.dhs.gov/
www.prosysopc.com/blog/#Security
www.prosysopc.com/news/opc-ua-simulation-server-540-released/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-22-349-01
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
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