CVE-2021-31894

{"containers": {"cna": {"affected": [{"product": "SIMATIC PCS 7 V8.2 and earlier", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions"}]}, {"product": "SIMATIC PCS 7 V9.X", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V9.1 SP2"}]}, {"product": "SIMATIC PDM", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V9.2 SP2"}]}, {"product": "SIMATIC STEP 7 V5.X", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V5.7"}]}, {"product": "SINAMICS STARTER (containing STEP 7 OEM version)", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V5.4 SP2 HF1"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions < V9.1 SP2), SIMATIC PDM (All versions < V9.2 SP2), SIMATIC STEP 7 V5.X (All versions < V5.7), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 SP2 HF1). A directory containing metafiles relevant to devices' configurations has write permissions. An attacker could leverage this vulnerability by changing the content of certain metafiles and subsequently manipulate parameters or behavior of devices that would be later configured by the affected software."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-732", "description": "CWE-732: Incorrect Permission Assignment for Critical Resource", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-08-10T11:17:00.000Z", "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77", "shortName": "siemens"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-661034.pdf"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "productcert@siemens.com", "ID": "CVE-2021-31894", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "SIMATIC PCS 7 V8.2 and earlier", "version": {"version_data": [{"version_value": "All versions"}]}}, {"product_name": "SIMATIC PCS 7 V9.X", "version": {"version_data": [{"version_value": "All versions < V9.1 SP2"}]}}, {"product_name": "SIMATIC PDM", "version": {"version_data": [{"version_value": "All versions < V9.2 SP2"}]}}, {"product_name": "SIMATIC STEP 7 V5.X", "version": {"version_data": [{"version_value": "All versions < V5.7"}]}}, {"product_name": "SINAMICS STARTER (containing STEP 7 OEM version)", "version": {"version_data": [{"version_value": "All versions < V5.4 SP2 HF1"}]}}]}, "vendor_name": "Siemens"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions < V9.1 SP2), SIMATIC PDM (All versions < V9.2 SP2), SIMATIC STEP 7 V5.X (All versions < V5.7), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 SP2 HF1). A directory containing metafiles relevant to devices' configurations has write permissions. An attacker could leverage this vulnerability by changing the content of certain metafiles and subsequently manipulate parameters or behavior of devices that would be later configured by the affected software."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-732: Incorrect Permission Assignment for Critical Resource"}]}]}, "references": {"reference_data": [{"name": "https://cert-portal.siemens.com/productcert/pdf/ssa-661034.pdf", "refsource": "MISC", "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-661034.pdf"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T23:10:30.952Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-661034.pdf"}]}]}, "cveMetadata": {"assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77", "assignerShortName": "siemens", "cveId": "CVE-2021-31894", "datePublished": "2021-07-13T11:02:58.000Z", "dateReserved": "2021-04-29T00:00:00.000Z", "dateUpdated": "2024-08-03T23:10:30.952Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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A directory containing metafiles relevant to devices' configurations has write permissions. An attacker could leverage this vulnerability by changing the content of certain metafiles and subsequently manipulate parameters or behavior of devices that would be later configured by the affected software."}, {"lang": "es", "value": "Se ha identificado una vulnerabilidad en SIMATIC PCS 7 V8.2 y anteriores (Todas las versiones), SIMATIC PCS 7 V9.X (Todas las versiones anteriores a V9.1 SP2), SIMATIC PDM (Todas las versiones anteriores a V9.2 SP2), SIMATIC STEP 7 V5.X (Todas las versiones anteriores a V5.7), SINAMICS STARTER (que contiene la versi\u00f3n OEM de STEP 7) (Todas las versiones anteriores a V5.4 SP2 HF1). Un directorio que contiene metafichas relevantes para las configuraciones de los dispositivos tiene permisos de escritura. Un atacante podr\u00eda aprovechar esta vulnerabilidad cambiando el contenido de ciertos metaficheros y posteriormente manipular los par\u00e1metros o el comportamiento de los dispositivos que posteriormente ser\u00edan configurados por el software afectado"}], "id": "CVE-2021-31894", "lastModified": "2026-06-17T03:52:26.597", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 6.0, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-07-13T11:15:09.603", "references": [{"source": "productcert@siemens.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-661034.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-661034.pdf"}], "sourceIdentifier": "productcert@siemens.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-732"}], "source": "productcert@siemens.com", "type": "Secondary"}]}

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