Summary
SENTRON 3KC ATC6 Expansion Module Ethernet exposes an unused, unstable http service at port 80/tcp on the Modbus-TCP Ethernet, which could allow an attacker on the same Modbus network to create a denial of service condition that forces the device to reboot.
Siemens is preparing fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.
Vulnerabilities 1
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High 7.5
A vulnerability has been identified in SENTRON 3KC ATC6 Expansion Module Ethernet (3KC9000-8TL75) (All versions). Affec…
Revision history
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#1
Publication Date
References
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SSA-918992: Unused HTTP Service on SENTRON 3KC ATC6 Ethernet Module - HTML Version
https://cert-portal.siemens.com/productcert/html/ssa-918992.html
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SSA-918992: Unused HTTP Service on SENTRON 3KC ATC6 Ethernet Module - PDF Version
https://cert-portal.siemens.com/productcert/pdf/ssa-918992.pdf
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SSA-918992: Unused HTTP Service on SENTRON 3KC ATC6 Ethernet Module - TXT Version
https://cert-portal.siemens.com/productcert/txt/ssa-918992.txt
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ICS Advisory ICSA-24-074-06 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-24-074-06
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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