{"api_version":"1","generated_at":"2026-04-23T05:13:59+00:00","cve":"CVE-2019-6473","urls":{"html":"https://cve.report/CVE-2019-6473","api":"https://cve.report/api/cve/CVE-2019-6473.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2019-6473","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-6473"},"summary":{"title":"CVE-2019-6473","description":"An invalid hostname option can trigger an assertion failure in the Kea DHCPv4 server process (kea-dhcp4), causing the server process to exit. 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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":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"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"An attacker who is able to deliberately exploit this vulnerability can cause the kea-dhcp4 server to stop executing, resulting in denial of service to clients.  Only the DHCPv4 service is affected by this vulnerability."}]}]},"references":{"reference_data":[{"name":"https://kb.isc.org/docs/cve-2019-6473","refsource":"CONFIRM","url":"https://kb.isc.org/docs/cve-2019-6473"}]},"solution":[{"lang":"eng","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"}},"nvd":{"publishedDate":"2019-10-16 18:15:00","lastModifiedDate":"2019-10-21 18:50:00","problem_types":["CWE-617"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:A/AC:L/Au:N/C:N/I:N/A:P","accessVector":"ADJACENT_NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":3.3},"severity":"LOW","exploitabilityScore":6.5,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:ics:kea:1.6.0:beta2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:ics:kea:1.6.0:beta1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:ics:kea:*:*:*:*:*:*:*:*","versionStartIncluding":"1.4.0","versionEndIncluding":"1.5.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2019","CveId":"6473","Ordinal":"144182","Title":"CVE-2019-6473","CVE":"CVE-2019-6473","Year":"2019"},"notes":[{"CveYear":"2019","CveId":"6473","Ordinal":"1","NoteData":"An invalid hostname option can trigger an assertion failure in the Kea DHCPv4 server process (kea-dhcp4), causing the server process to exit. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2.","Type":"Description","Title":null},{"CveYear":"2019","CveId":"6473","Ordinal":"2","NoteData":"2019-10-16","Type":"Other","Title":"Published"},{"CveYear":"2019","CveId":"6473","Ordinal":"3","NoteData":"2019-10-16","Type":"Other","Title":"Modified"}]}}}