{"id":"USN-8403-1","summary":"isc-kea vulnerability","details":"Ali Norouzi discovered that Kea DHCP did not properly handle maliciously\ncrafted messages over configured API sockets and HA listeners. A remote\nattacker could possibly use this issue to cause Kea DHCP to crash,\nresulting in a denial of service.","modified":"2026-06-30T18:17:24.566091908Z","published":"2026-06-08T14:28:06Z","related":["UBUNTU-CVE-2026-3608"],"upstream":["UBUNTU-CVE-2026-3608"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8403-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-3608"}],"affected":[{"package":{"name":"isc-kea","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/isc-kea?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.1-3ubuntu0.2"}]}],"versions":["2.2.1-3","2.4.0-1","2.4.1-1","2.4.1-2build1","2.4.1-3build1","2.4.1-3build3","2.4.1-3build3.1","2.4.1-3ubuntu0.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"kea","binary_version":"2.4.1-3ubuntu0.2"},{"binary_version":"2.4.1-3ubuntu0.2","binary_name":"kea-admin"},{"binary_version":"2.4.1-3ubuntu0.2","binary_name":"kea-common"},{"binary_version":"2.4.1-3ubuntu0.2","binary_name":"kea-ctrl-agent"},{"binary_version":"2.4.1-3ubuntu0.2","binary_name":"kea-dhcp-ddns-server"},{"binary_version":"2.4.1-3ubuntu0.2","binary_name":"kea-dhcp4-server"},{"binary_version":"2.4.1-3ubuntu0.2","binary_name":"kea-dhcp6-server"},{"binary_name":"python3-kea-connector","binary_version":"2.4.1-3ubuntu0.2"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:24.04:LTS","cves":[{"id":"CVE-2026-3608","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/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-8403-1.json"}},{"package":{"name":"isc-kea","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/isc-kea?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.3-2ubuntu0.1"}]}],"versions":["2.6.1-1","2.6.1-2","2.6.3-1","2.6.3-2"],"ecosystem_specific":{"binaries":[{"binary_name":"kea","binary_version":"2.6.3-2ubuntu0.1"},{"binary_name":"kea-admin","binary_version":"2.6.3-2ubuntu0.1"},{"binary_version":"2.6.3-2ubuntu0.1","binary_name":"kea-common"},{"binary_name":"kea-ctrl-agent","binary_version":"2.6.3-2ubuntu0.1"},{"binary_version":"2.6.3-2ubuntu0.1","binary_name":"kea-dhcp-ddns-server"},{"binary_version":"2.6.3-2ubuntu0.1","binary_name":"kea-dhcp4-server"},{"binary_version":"2.6.3-2ubuntu0.1","binary_name":"kea-dhcp6-server"},{"binary_name":"python3-kea-connector","binary_version":"2.6.3-2ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:25.10","cves":[{"id":"CVE-2026-3608","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/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-8403-1.json"}}],"schema_version":"1.7.5"}