Summary
A vulnerability in Desigo DXR and PXC controllers has been identified that could allow an attacker to cause denial of service conditions by sending malformed BACnet packets. Recovery requires a device reset or reboot to restore normal functionality.
Siemens has released new versions for the affected products and recommends to update to the latest versions.
Vulnerabilities 1
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Medium 4.3
A vulnerability has been identified in Desigo DXR2 (All versions < V01.21.233.16-7862), Desigo PXC3 (All versions < V01…
Revision history
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#2
Initial CISA Republication of Siemens SSA-781903 advisory
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#1
Publication Date
References
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SSA-781903: Denial of Service Vulnerability in Desigo DXR and PXC Controllers - HTML Version
https://cert-portal.siemens.com/productcert/html/ssa-781903.html
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ICS Advisory ICSA-26-225-08 - Web Version
https://www.cisa.gov/news-events/ics-advisories/ICSA-26-225-08
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Recommended Practices
https://www.cisa.gov/news-events/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://www.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/news-events/news/targeted-cyber-intrusion-detection-and-mitigation-strategies-update-b