Summary
Affected products do not properly sanitize user-controllable input when parsing files. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application.
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.
Siemens has released products based on the Totally Integrated Automation Portal (TIA Portal) V20 which are not affected by CVE-2024-49849. See the chapter "Additional Information" below for more details.
Vulnerabilities 1
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High 7.8
A vulnerability has been identified in SIMATIC S7-PLCSIM V16 (All versions), SIMATIC S7-PLCSIM V17 (All versions), SIMA…
Revision history
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#2
Added fix for Totally Integrated Automation Portal (TIA Portal) V19; Name of SIMOTION SCOUT TIA V5.6 SP1 was updated to SIMOTION SCOUT TIA V5.6 and Name of SIMOTION SCOUT TIA V5.5 SP1 was updated to SIMOTION SCOUT TIA V5.5; Removed entry for SIMOTION SCOUT TIA V5.4 SP1 as the product is renamed to SIMOTION SCOUT TIA V5.4 which is mentioned in TIA portal; Name of SIMOTION SCOUT TIA V5.4 SP3 was updated to SIMOTION SCOUT TIA V5.4
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#1
Publication Date
References
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SSA-800126: Deserialization Vulnerability in Siemens Engineering Platforms before V20 - HTML Version
https://cert-portal.siemens.com/productcert/html/ssa-800126.html
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ICS Advisory ICSA-24-347-05 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-24-347-05
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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