Summary
Affected products do not properly restrict access permissions to a local Windows Named Pipe and do not properly sanitize user-controllable input sent to that Named Pipe. This could allow a local authenticated attacker to cause a type confusion and execute arbitrary code within the affected application and its privileges.
Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.
Vulnerabilities 1
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High 8.2
A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SIMATI…
Revision history
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#5
CISA Republication update based on Siemens ProductCERT SSA-693808 advisory
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#4
Added fix for SIMATIC PCS NEO V6.0
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#3
Added fix for Totally Integrated Automation Portal (TIA Portal) V17
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#2
Added no fix expected for PCS neo V5.0, added fix for TIA Portal V20
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#1
Publication Date
References
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SSA-693808: Deserialization Vulnerability in Siemens Engineering Platforms - HTML Version
https://cert-portal.siemens.com/productcert/html/ssa-693808.html
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ICS Advisory ICSA-25-226-03 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-25-226-03
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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