Successful exploitation of these vulnerabilities could allow an attacker unauthorized access to components, ability to execute arbitrary code, or ability to execute a denial-of-service.
3.2.1 IMPROPER CHECK FOR UNUSUAL OR EXCEPTIONAL CONDITIONS CWE-754
The affected components contain a vulnerability that could cause arbitrary code execution, a denial-of-service condition, and/or loss of confidentiality and integrity when an actor loads a malicious project file onto the controller.
CVE-2022-45788 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).
Jos Wetzels and Daniel dos Santos of Forescout Technologies reported these vulnerabilities to Schneider Electric.
Schneider Electric released the following remediations for users to implement:
Users should use appropriate patching methodologies when applying these patches to their systems. Schneider Electric recommends using backups and evaluating the impact of these patches in a โtesting and development environmentโ or on an offline infrastructure.
Users should contact Schneider Electric for assistance in removing a patch.
Users should apply the best practices for network hardening as documented in the product user guide and the Schneider Electric Recommended Cybersecurity Best Practices.
For more information, see Schneider Electricโs security advisory SEVD-2023-010-05.
CISA recommends users take defensive measures to minimize the risk of exploitation of 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-12-146-01BโTargeted 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.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
No known public exploits specifically target these vulnerabilities.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-45788
cisa.gov/ics
cisa.gov/ics
cwe.mitre.org/data/definitions/754.html
download.schneider-electric.com/files?p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-010-05_Modicon_Controllers_Security_Notification.pdf
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
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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.cisa.gov/uscert/ncas/tips/ST04-014
www.cisa.gov/uscert/sites/default/files/publications/emailscams_0905.pdf
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
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www.se.com/us/en/download/document/7EN52-0390/
www.se.com/us/en/work/support/contacts.jsp
www.se.com/ww/en/download/document/BMEx%2058x0x0_SV04.10/
www.se.com/ww/en/download/document/BMKC80_Firmware_upgrade/
www.se.com/ww/en/download/document/EcoStr%20uxureControlExpert-V15.3/
www.se.com/ww/en/download/document/Mome%20ntum_FW_update/
www.se.com/ww/en/product-range/1468-%20modicon-m340/#software-and-firmware
www.se.com/ww/en/product-range/65406-%20ecostruxure-process-expert/#software-and-firmware
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-23-201-01
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