Summary
A vulnerability was identified in the Automation License Manager software that could be triggered by sending specially crafted packets to port 4410/tcp of an affected system. This could cause a denial-of-service preventing legitimate users from using the system.
Siemens has released an update for the Automation License Manager 6 and recommends to update to the latest version. 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 Automation License Manager 5 (All versions), Automation License Manager 6 (All v…
Revision history
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#2
Revision - Fixing typos
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#1
Publication Date
References
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SSA-158827: Denial-of-Service Vulnerability in Automation License Manager - TXT Version
https://cert-portal.siemens.com/productcert/txt/ssa-158827.txt
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SSA-158827: Denial-of-Service Vulnerability in Automation License Manager - PDF Version
https://cert-portal.siemens.com/productcert/pdf/ssa-158827.pdf
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ICS Advisory ICSA-21-222-02 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-21-222-02
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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