CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
5.1%
Successful exploitation of this vulnerability could allow an attacker to leverage the default installation for Windows versions of the CoreShield (OWG) software, which sets insecure file permissions that could result in local escalation of privileges to local administrator.
The following versions of CoreShield OWG software, which enable unidirectional exchange of information between network zones, are affected:
The default installation sets insecure file permissions, which could allow a local attacker to escalate privileges to local administrator.
CVE-2022-38466 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
Abian Blome and Michael Messner from Siemens Energy reported this vulnerability to Siemens Mobility.
Siemens Mobility recommends users update CoreShield OWG software to version 2.2 or later.
Siemens Mobility has identified the following specific workarounds and mitigations users can apply to reduce the risk:
For more information see Siemens Security Advisory in HTML or CSAF.
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. This vulnerability is not exploitable remotely.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-38466
cert-portal.siemens.com/productcert/csaf/ssa-589975.json
cert-portal.siemens.com/productcert/html/ssa-589975.html
cisa.gov/ics
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us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
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