Summary
Some firmware versions of the SCALANCE and RUGGEDCOM devices listed below are affected by a vulnerability in the SSH authentication that could allow an attacker to cause a Denial-of-Service under certain conditions.
Siemens has released updates for the affected products and recommends to update to the latest version.
Vulnerabilities 1
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Unscored —
A vulnerability has been identified in RUGGEDCOM RM1224 (V6.3), SCALANCE M-800 (V6.3), SCALANCE S615 (V6.3), SCALANCE S…
Revision history
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#3
Revision - Fixing typos
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#2
Added solution for SCALANCE M-800/S615 and RUGGEDCOM RM1224
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#1
Publication Date
References
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SSA-296266: Denial-of-Service Vulnerability in SCALANCE and RUGGEDCOM Devices - TXT Version
https://cert-portal.siemens.com/productcert/txt/ssa-296266.txt
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SSA-296266: Denial-of-Service Vulnerability in SCALANCE and RUGGEDCOM Devices - PDF Version
https://cert-portal.siemens.com/productcert/pdf/ssa-296266.pdf
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ICS Advisory ICSA-21-068-02 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-21-068-02
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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