CVE-2023-43637

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "EVE OS", "product": "EVE OS", "programFiles": ["https://github.com/lf-edge/eve/tree/master/pkg/pillar/cmd/vaultmgr/vaultmgr.go", "https://github.com/lf-edge/eve/tree/master/pkg/pillar/vault/key.go"], "repo": "https://github.com/lf-edge/eve", "vendor": " LF-Edge, Zededa", "versions": [{"lessThan": "7.10", "status": "affected", "version": "0", "versionType": "release"}]}], "source": "cve@asrg.io"}, {"affectedData": [{"cpes": ["cpe:2.3:o:linuxfoundation:edge_virtualization_engine:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "edge_virtualization_engine", "vendor": "linuxfoundation", "versions": [{"lessThan": "7.10", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:lfedge:eve:*:*:*:*:*:*:*:*", "matchCriteriaId": "77901B8C-18E1-4B76-AC1C-C9219A0B4BA2", "versionEndExcluding": "7.10", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "\nDue to the implementation of \"deriveVaultKey\", prior to version 7.10, the generated vault key\nwould always have the last 16 bytes predetermined to be \"arfoobarfoobarfo\".\n\nThis issue happens because \"deriveVaultKey\" calls \"retrieveCloudKey\" (which will always\nreturn \"foobarfoobarfoobarfoobarfoobarfo\" as the key), and then merges the 32byte\nrandomly generated key with this key (by takeing 16bytes from each, see \"mergeKeys\").\n\nThis makes the key a lot weaker.\n\nThis issue does not persist in devices that were initialized on/after version 7.10, but devices\nthat were initialized before that and updated to a newer version still have this issue.\n\n\n\nRoll an update that enforces the full 32bytes key usage.\n\n\n\n\n\n\n"}, {"lang": "es", "value": "Debido a la implementaci\u00f3n de \"deriveVaultKey\", antes de la versi\u00f3n 7.10, la clave de almac\u00e9n generada siempre tendr\u00eda los \u00faltimos 16 bytes predeterminados como \"arfoobarfoobarfo\". Este problema ocurre porque \"deriveVaultKey\" llama a \"retrieveCloudKey\" (que siempre devolver\u00e1 \"foobarfoobarfoobarfoobarfoobarfo\" como clave) y luego fusiona la clave de 32 bytes generada aleatoriamente con esta clave (tomando 16 bytes de cada una, consulte \"mergeKeys\"). Esto debilita mucho la clave. Este problema no persiste en los dispositivos que se inicializaron en la versi\u00f3n 7.10 o posteriores, pero los dispositivos que se inicializaron antes y se actualizaron a una versi\u00f3n m\u00e1s reciente a\u00fan tienen este problema. Implemente una actualizaci\u00f3n que imponga el uso completo de la clave de 32 bytes."}], "id": "CVE-2023-43637", "lastModified": "2026-06-17T06:26:07.780", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.1, "impactScore": 6.0, "source": "cve@asrg.io", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-43637", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-09-24T17:45:45.770173Z", "version": "2.0.3"}}]}, "published": "2023-09-21T14:15:11.643", "references": [{"source": "cve@asrg.io", "tags": ["Third Party Advisory"], "url": "https://asrg.io/security-advisories/cve-2023-43637/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://asrg.io/security-advisories/cve-2023-43637/"}], "sourceIdentifier": "cve@asrg.io", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-321"}], "source": "cve@asrg.io", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-798"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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