Summary
A denial-of-service vulnerability in WinCC Runtime could allow an unauthenticated attacker with network access to cause a denial-of-service condition in the SNMP service by sending crafted SNMP packets to port 161/udp.
Siemens has released updates for the affected products and recommends to update to the latest versions.
Vulnerabilities 1
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Unscored —
A vulnerability has been identified in SIMATIC HMI Comfort Panels 1st Generation (incl. SIPLUS variants) (All versions …
Revision history
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#2
Revision - Fixing typos
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#1
Publication Date
References
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SSA-594364: Denial-of-Service Vulnerability in SNMP Implementation of WinCC Runtime - TXT Version
https://cert-portal.siemens.com/productcert/txt/ssa-594364.txt
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SSA-594364: Denial-of-Service Vulnerability in SNMP Implementation of WinCC Runtime - PDF Version
https://cert-portal.siemens.com/productcert/pdf/ssa-594364.pdf
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ICS Advisory ICSA-21-131-06 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-21-131-06
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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