Summary
Desigo CC and Cerberus DMS are based on SIMATIC WinCC OA and implement client-side only authentication for specific parts of their client-server communication. In this configuration, attackers could impersonate other users or exploit the client-server protocol without being authenticated, as documented for SIMATIC WinCC OA in SSA-111512 [1].
Siemens recommends specific mitigations, documented in [2], for products where fixes are not, or not yet available. Additional details regarding these mitigations can be found in the chapter Additional Information.
[1]
https://cert-portal.siemens.com/productcert/html/ssa-111512.html
[2] https://support.industry.siemens.com/cs/ww/en/view/109813389/
Vulnerabilities 1
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Unscored —
A vulnerability has been identified in Cerberus DMS (All versions), Desigo CC (All versions), Desigo CC Compact (All ve…
Revision history
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#1
Publication Date
References
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SSA-836027: Client-side Authentication in Desigo CC and Cerberus DMS - TXT Version
https://cert-portal.siemens.com/productcert/txt/ssa-836027.txt
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SSA-836027: Client-side Authentication in Desigo CC and Cerberus DMS - PDF Version
https://cert-portal.siemens.com/productcert/pdf/ssa-836027.pdf
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ICS Advisory ICSA-22-286-16 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-22-286-16
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Recommended Practices
https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
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Recommended Practices
https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
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Recommended Practices
https://www.cisa.gov/topics/industrial-control-systems
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Recommended Practices
https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
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Recommended Practices
https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
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Recommended Practices
https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B