Summary
Affected products do not correctly invalidate user sessions upon user logout. This could allow a remote unauthenticated attacker, who has obtained the session token by other means, to re-use a legitimate user's session even after logout.
Siemens has released new versions for the affected products and recommends to update to the latest versions.
Vulnerabilities 1
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High 8.8
A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions < V4.1 Update 3), SIMATIC PCS neo V5.0 (All v…
Revision history
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#1
Publication Date
References
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SSA-339086: Insufficient Session Expiration Vulnerability in SIMATIC PCS neo - HTML Version
https://cert-portal.siemens.com/productcert/html/ssa-339086.html
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ICS Advisory ICSA-25-135-12 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-25-135-12
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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