Summary
A vulnerability in SIMATIC CP343-1 devices could allow an attacker to cause a Denial-of-Service condition on TCP port 102 of the affected devices by sending specially crafted packets.
Siemens recommends specific countermeasures for products where updates are not, or not yet available.
Vulnerabilities 1
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Unscored —
A vulnerability has been identified in SIMATIC NET CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC NE…
Revision history
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#2
Revision - Fixing typos
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#1
Publication Date
References
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SSA-676775: Denial-of-Service Vulnerability in SIMATIC NET CP 343-1 Devices - TXT Version
https://cert-portal.siemens.com/productcert/txt/ssa-676775.txt
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SSA-676775: Denial-of-Service Vulnerability in SIMATIC NET CP 343-1 Devices - PDF Version
https://cert-portal.siemens.com/productcert/pdf/ssa-676775.pdf
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ICS Advisory ICSA-21-131-07 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-21-131-07
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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