Summary
SCALANCE XM-400 and XR-500 devices contain a vulnerability in the OSPF protocol implementation that could allow an unauthenticated remote attacker to create a permanent denial-of-service condition.
Siemens has released updates for the affected products and recommends to update to the latest versions.
Vulnerabilities 1
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Unscored —
An unauthenticated remote attacker could create a permanent denial-of-service condition by sending specially crafted OS…
Revision history
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#2
Revision - Fixing typos
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#1
Publication Date
References
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SSA-116379: Denial-of-Service Vulnerability in OSPF Packet Handling of SCALANCE XM-400 and XR-500 Devices - TXT Version
https://cert-portal.siemens.com/productcert/txt/ssa-116379.txt
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SSA-116379: Denial-of-Service Vulnerability in OSPF Packet Handling of SCALANCE XM-400 and XR-500 Devices - PDF Version
https://cert-portal.siemens.com/productcert/pdf/ssa-116379.pdf
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ICS Advisory ICSA-21-131-10 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-21-131-10
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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