CVE-2019-6474

{"containers": {"cna": {"affected": [{"product": "Kea", "vendor": "ISC", "versions": [{"status": "affected", "version": "1.4.0 to 1.5.0"}, {"status": "affected", "version": "1.6.0-beta1"}, {"status": "affected", "version": "1.6.0-beta2"}]}], "datePublic": "2019-08-28T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "A missing check on incoming client requests can be exploited to cause a situation where the Kea server's lease storage contains leases which are rejected as invalid when the server tries to load leases from storage on restart. If the number of such leases exceeds a hard-coded limit in the Kea code, a server trying to restart will conclude that there is a problem with its lease store and give up. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2"}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"description": "Only Kea servers which use memfile storage for leases are affected by this vulnerability. An attacker can exploit the missing check to deliberately create a situation where the server will not restart properly should it stop for any reason.", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2019-10-16T17:22:16.000Z", "orgId": "404fd4d2-a609-4245-b543-2c944a302a22", "shortName": "isc"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://kb.isc.org/docs/cve-2019-6474"}], "solutions": [{"lang": "en", "value": "Upgrade to a version of Kea containing a fix, available via\n https://www.isc.org/downloads.\n\n - Kea 1.4.0-P2\n - Kea 1.5.0-P1\n - Kea 1.6.0"}], "source": {"discovery": "INTERNAL"}, "title": "A packet containing a malformed DUID can cause the kea-dhcp6 server to terminate", "x_generator": {"engine": "Vulnogram 0.0.8"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-officer@isc.org", "DATE_PUBLIC": "2019-08-28T21:08:56.000Z", "ID": "CVE-2019-6474", "STATE": "PUBLIC", "TITLE": "A packet containing a malformed DUID can cause the kea-dhcp6 server to terminate"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Kea", "version": {"version_data": [{"version_value": "1.4.0 to 1.5.0"}, {"version_value": "1.6.0-beta1"}, {"version_value": "1.6.0-beta2"}]}}]}, "vendor_name": "ISC"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A missing check on incoming client requests can be exploited to cause a situation where the Kea server's lease storage contains leases which are rejected as invalid when the server tries to load leases from storage on restart. If the number of such leases exceeds a hard-coded limit in the Kea code, a server trying to restart will conclude that there is a problem with its lease store and give up. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2"}]}, "generator": {"engine": "Vulnogram 0.0.8"}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Only Kea servers which use memfile storage for leases are affected by this vulnerability. An attacker can exploit the missing check to deliberately create a situation where the server will not restart properly should it stop for any reason."}]}]}, "references": {"reference_data": [{"name": "https://kb.isc.org/docs/cve-2019-6474", "refsource": "CONFIRM", "url": "https://kb.isc.org/docs/cve-2019-6474"}]}, "solution": [{"lang": "en", "value": "Upgrade to a version of Kea containing a fix, available via\n https://www.isc.org/downloads.\n\n - Kea 1.4.0-P2\n - Kea 1.5.0-P1\n - Kea 1.6.0"}], "source": {"discovery": "INTERNAL"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T20:23:20.976Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://kb.isc.org/docs/cve-2019-6474"}]}]}, "cveMetadata": {"assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22", "assignerShortName": "isc", "cveId": "CVE-2019-6474", "datePublished": "2019-10-16T17:22:16.767Z", "dateReserved": "2019-01-16T00:00:00.000Z", "dateUpdated": "2024-09-16T22:19:36.160Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "Kea", "vendor": "ISC", "versions": [{"status": "affected", "version": "1.4.0 to 1.5.0"}, {"status": "affected", "version": "1.6.0-beta1"}, {"status": "affected", "version": "1.6.0-beta2"}]}], "source": "security-officer@isc.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:isc:kea:*:*:*:*:*:*:*:*", "matchCriteriaId": "27BBC7E1-37AF-4BC6-BA53-09CF7B8921BB", "versionEndIncluding": "1.5.0", "versionStartIncluding": "1.4.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:isc:kea:1.6.0:beta1:*:*:*:*:*:*", "matchCriteriaId": "43793833-7D0F-4C7C-80B4-F8563AD23607", "vulnerable": true}, {"criteria": "cpe:2.3:a:isc:kea:1.6.0:beta2:*:*:*:*:*:*", "matchCriteriaId": "AECDE26A-DDFD-4035-A08E-E7A5CA37F1E8", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A missing check on incoming client requests can be exploited to cause a situation where the Kea server's lease storage contains leases which are rejected as invalid when the server tries to load leases from storage on restart. If the number of such leases exceeds a hard-coded limit in the Kea code, a server trying to restart will conclude that there is a problem with its lease store and give up. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2"}, {"lang": "es", "value": "Una falta de comprobaci\u00f3n en las peticiones de clientes entrantes puede ser explotadas para causar una situaci\u00f3n en la que el almacenamiento arrendado del servidor Kea contiene arrendamientos que son rechazados como no v\u00e1lidos cuando el servidor intenta cargar arrendamientos del almacenamiento al reiniciar. Si el n\u00famero de tales arrendamientos excede un l\u00edmite codificado en el c\u00f3digo Kea, un servidor que intente reiniciar concluir\u00e1 que existe un problema con su almac\u00e9n de arrendamientos y se dar\u00e1 por vencido. Versiones afectadas: 1.4.0 hasta 1.5.0, 1.6.0-beta1 y 1.6.0-beta2"}], "id": "CVE-2019-6474", "lastModified": "2026-06-17T02:39:06.583", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 6.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 6.5, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 3.6, "source": "security-officer@isc.org", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-10-16T18:15:37.217", "references": [{"source": "security-officer@isc.org", "tags": ["Vendor Advisory"], "url": "https://kb.isc.org/docs/cve-2019-6474"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.isc.org/docs/cve-2019-6474"}], "sourceIdentifier": "security-officer@isc.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-772"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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