{"id":"USN-7759-1","summary":"isc-kea vulnerabilities","details":"It was discovered that Kea DHCP did not correctly handle invalid hostnames.\nA remote attacker could possibly use this issue to cause a denial of\nservice.","modified":"2026-06-25T13:32:31.109521115Z","published":"2025-09-21T23:51:11Z","related":["UBUNTU-CVE-2019-6473"],"upstream":["CVE-2019-6473","UBUNTU-CVE-2019-6473"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7759-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-6473"}],"affected":[{"package":{"name":"isc-kea","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/isc-kea?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0-1ubuntu0.1~esm1"}]}],"versions":["1.0.0-1","1.0.0-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"kea-admin","binary_version":"1.0.0-1ubuntu0.1~esm1"},{"binary_name":"kea-common","binary_version":"1.0.0-1ubuntu0.1~esm1"},{"binary_name":"kea-dhcp-ddns-server","binary_version":"1.0.0-1ubuntu0.1~esm1"},{"binary_version":"1.0.0-1ubuntu0.1~esm1","binary_name":"kea-dhcp4-server"},{"binary_version":"1.0.0-1ubuntu0.1~esm1","binary_name":"kea-dhcp6-server"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2019-6473","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7759-1.json"}},{"package":{"name":"isc-kea","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/isc-kea?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0-1ubuntu0.1~esm1"}]}],"versions":["1.1.0-1","1.1.0-1build1","1.1.0-1build2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"kea-admin","binary_version":"1.1.0-1ubuntu0.1~esm1"},{"binary_version":"1.1.0-1ubuntu0.1~esm1","binary_name":"kea-common"},{"binary_version":"1.1.0-1ubuntu0.1~esm1","binary_name":"kea-dhcp-ddns-server"},{"binary_version":"1.1.0-1ubuntu0.1~esm1","binary_name":"kea-dhcp4-server"},{"binary_version":"1.1.0-1ubuntu0.1~esm1","binary_name":"kea-dhcp6-server"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"id":"CVE-2019-6473","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7759-1.json"}}],"schema_version":"1.7.5"}