Summary
SCALANCE X devices might not generate a unique random key
after factory reset, and use a private key shipped with the firmware.
Siemens has released updates for the affected products and recommends to update to the latest versions.
Vulnerabilities 2
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Unscored —
A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5)…
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Unscored —
A vulnerability has been identified in SCALANCE X-200RNA switch family (All versions < V3.2.7), SCALANCE X-300 switch f…
Revision history
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#4
Added SCALANCE X-200RNA switch family
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#3
Added solution for SCALANCE X-200 switch family
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#2
Added update information for SCALANCE X-200IRT switch family
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#1
Publication Date
References
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SSA-274900: Use of Hardcoded Key in SCALANCE X Devices Under Certain Conditions - TXT Version
https://cert-portal.siemens.com/productcert/txt/ssa-274900.txt
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SSA-274900: Use of Hardcoded Key in SCALANCE X Devices Under Certain Conditions - PDF Version
https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf
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ICS Advisory ICSA-21-012-02 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-21-012-02
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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