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The CPU will remain in DEFECT mode until manual restart."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-20: Improper Input Validation"}]}]},"references":{"reference_data":[{"name":"https://cert-portal.siemens.com/productcert/pdf/ssa-914382.pdf","refsource":"CONFIRM","url":"https://cert-portal.siemens.com/productcert/pdf/ssa-914382.pdf"},{"name":"104217","refsource":"BID","url":"http://www.securityfocus.com/bid/104217"},{"name":"https://www.siemens.com/global/en/home/products/services/cert.html#SecurityPublications","refsource":"CONFIRM","url":"https://www.siemens.com/global/en/home/products/services/cert.html#SecurityPublications"}]}},"nvd":{"publishedDate":"2018-05-16 17:29:00","lastModifiedDate":"2019-10-09 23:41:00","problem_types":["NVD-CWE-noinfo"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:siemens:simatic_s7-400_firmware:*:*:*:*:*:*:*:*","versionEndIncluding":"4.0","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:h:siemens:simatic_s7-400:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]},{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:siemens:simatic_s7-400_firmware:*:*:*:*:*:*:*:*","versionEndExcluding":"5.2","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:h:siemens:simatic_s7-400:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]},{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:siemens:simatic_s7-400h_firmware:*:*:*:*:*:*:*:*","versionEndIncluding":"4.5","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":false,"cpe23Uri":"cpe:2.3:h:siemens:simatic_s7-400h:-:*:*:*:*:*:*:*","cpe_name":[]}]}],"cpe_match":[]}]}},"legacy_mitre":{"record":{"CveYear":"2018","CveId":"4850","Ordinal":"120764","Title":"CVE-2018-4850","CVE":"CVE-2018-4850","Year":"2018"},"notes":[{"CveYear":"2018","CveId":"4850","Ordinal":"1","NoteData":"A vulnerability has been identified in SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below (All versions), SIMATIC S7-400 (incl. F) CPU hardware version 5.0 (All firmware versions < V5.2), SIMATIC S7-400H CPU hardware version 4.5 and below (All versions). The affected CPUs improperly validate S7 communication packets which could cause a Denial-of-Service condition of the CPU. The CPU will remain in DEFECT mode until manual restart.","Type":"Description","Title":null},{"CveYear":"2018","CveId":"4850","Ordinal":"2","NoteData":"2018-05-16","Type":"Other","Title":"Published"},{"CveYear":"2018","CveId":"4850","Ordinal":"3","NoteData":"2018-05-22","Type":"Other","Title":"Modified"}]}}}