CVE-2020-8905

{"id": "CVE-2020-8905", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N", "authentication": "SINGLE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "cve-coordination@google.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 2.8, "attackVector": "LOCAL", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 1.1}]}, "published": "2020-08-12T19:15:14.670", "references": [{"url": "https://github.com/google/asylo/commit/299f804acbb95a612ab7c504d25ab908aa59ae93", "tags": ["Patch", "Third Party Advisory"], "source": "cve-coordination@google.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-120"}]}, {"type": "Secondary", "source": "cve-coordination@google.com", "description": [{"lang": "en", "value": "CWE-120"}]}], "descriptions": [{"lang": "en", "value": "A buffer length validation vulnerability in Asylo versions prior to 0.6.0 allows an attacker to read data they should not have access to. The 'enc_untrusted_recvfrom' function generates a return value which is deserialized by 'MessageReader', and copied into three different 'extents'. The length of the third 'extents' is controlled by the outside world, and not verified on copy, allowing the attacker to force Asylo to copy trusted memory data into an untrusted buffer of significantly small length.. We recommend updating Asylo to version 0.6.0 or later."}, {"lang": "es", "value": "Una vulnerabilidad de comprobaci\u00f3n de longitud del b\u00fafer en Asylo versiones anteriores a 0.6.0, permite a un atacante leer datos a los que no deber\u00eda tener acceso. La funci\u00f3n \"enc_untrusted_recvfrom\" genera un valor de retorno que es deserializado por \"lMessageReader\" y copiado en tres \"extents\" diferentes. La longitud de los ''extents\" de terceros es controlada por el mundo exterior y no es verificada en la copia, permitiendo al atacante forzar a Asylo a copiar datos de memoria confiables en un b\u00fafer no confiable de longitud significativamente peque\u00f1a. Recomendamos actualizar Asylo en las versiones 0.6. 0 o posteriores"}], "lastModified": "2020-08-13T14:40:49.783", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:google:asylo:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2E43ACF0-4DFF-4A7A-BC8B-90E067F13206", "versionEndExcluding": "0.6.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve-coordination@google.com"}