{"id":"UBUNTU-CVE-2019-6473","details":"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.","modified":"2026-04-22T12:21:01.420989Z","published":"2019-08-28T00:00:00Z","related":["USN-7759-1"],"upstream":["CVE-2019-6473"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-6473"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-6473"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7759-1"}],"affected":[{"package":{"name":"isc-kea","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/isc-kea@1.0.0-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0-1ubuntu0.1~esm1"}]}],"versions":["1.0.0-1","1.0.0-1build1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","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_version":"1.0.0-1ubuntu0.1~esm1","binary_name":"kea-dhcp-ddns-server"},{"binary_name":"kea-dhcp4-server","binary_version":"1.0.0-1ubuntu0.1~esm1"},{"binary_name":"kea-dhcp6-server","binary_version":"1.0.0-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-6473.json"}},{"package":{"name":"isc-kea","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/isc-kea@1.1.0-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"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_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","binary_version":"1.1.0-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-6473.json"}}],"schema_version":"1.7.5","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"}]}