CVE-2019-5023

{"id": "CVE-2019-5023", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Secondary", "source": "talos-cna@cisco.com", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 5.9, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 1.4}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.2}]}, "published": "2019-10-31T21:15:13.373", "references": [{"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0784", "tags": ["Exploit", "Third Party Advisory"], "source": "talos-cna@cisco.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-772"}]}, {"type": "Secondary", "source": "talos-cna@cisco.com", "description": [{"lang": "en", "value": "CWE-401"}]}], "descriptions": [{"lang": "en", "value": "An exploitable vulnerability exists in the grsecurity PaX patch for the function read_kmem, in PaX from version pax-linux-4.9.8-test1 to 4.9.24-test7, grsecurity official from version grsecurity-3.1-4.9.8-201702060653 to grsecurity-3.1-4.9.24-201704252333, grsecurity unofficial from version v4.9.25-unofficialgrsec to v4.9.74-unofficialgrsec. PaX adds a temp buffer to the read_kmem function, which is never freed when an invalid address is supplied. This results in a memory leakage that can lead to a crash of the system. An attacker needs to induce a read to /dev/kmem using an invalid address to exploit this vulnerability."}, {"lang": "es", "value": "Se presenta una vulnerabilidad explotable en el parche grsecurity PaX para la funci\u00f3n read_kmem, en PaX desde la versi\u00f3n pax-linux-4.9.8-test1 hasta 4.9.24-test7, grsecurity official desde la versi\u00f3n grsecurity-3.1-4.9.8-201702060653 hasta grsecurity-3.1-4.9.24-201704252333, grsecurity unofficial desde la versi\u00f3n v4.9.25-unofficialgrsec hasta v4.9.74-unofficialgrsec. PaX agrega un b\u00fafer temporal a la funci\u00f3n read_kmem, que nunca es liberado cuando una direcci\u00f3n no v\u00e1lida es suministrada. Esto resulta en una p\u00e9rdida de memoria que puede causar un bloqueo del sistema. Un atacante necesita inducir una lectura en /dev/kmem usando una direcci\u00f3n no v\u00e1lida para explotar esta vulnerabilidad."}], "lastModified": "2022-06-07T18:41:22.710", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:opensrcsec:grsecurity:*:*:*:*:official:*:*:*", "vulnerable": true, "matchCriteriaId": "D949E9AD-ECE0-4C9D-B2BD-4091D957EBB1", "versionEndIncluding": "3.1-4.9.24-201704252333", "versionStartIncluding": "3.1-4.9.8-201702060653"}, {"criteria": "cpe:2.3:a:opensrcsec:grsecurity:*:*:*:*:unofficial:*:*:*", "vulnerable": true, "matchCriteriaId": "187DBEE6-4986-41C1-8735-38EEF94A3108", "versionEndIncluding": "4.9.74", "versionStartIncluding": "4.9.25"}, {"criteria": "cpe:2.3:a:opensrcsec:pax:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "319F79C1-0EA7-44F5-8837-FC4A146AB160", "versionEndIncluding": "pax-linux-4.9.8-test7", "versionStartIncluding": "pax-linux-4.9.8-test1"}], "operator": "OR"}]}], "sourceIdentifier": "talos-cna@cisco.com"}