{"id":"UBUNTU-CVE-2016-5427","details":"PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . (dot) inside labels, which allows remote attackers to cause a denial of service (backend CPU consumption) via a crafted DNS query.","modified":"2025-07-16T07:49:55.186301Z","published":"2016-09-21T14:25:00Z","withdrawn":"2025-07-18T16:43:34Z","upstream":["CVE-2016-5427"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-5427"},{"type":"REPORT","url":"https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-5427"}],"affected":[{"package":{"name":"pdns","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/pdns@4.0.0~alpha2-3build1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.0~alpha2-3build1"}]}],"versions":["3.4.5-1build2","3.4.6-2","3.4.6-3","3.4.7-1","3.4.7-2","4.0.0~alpha1-1","4.0.0~alpha2-2","4.0.0~alpha2-3"],"ecosystem_specific":{"binaries":[{"binary_name":"pdns-backend-geoip","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-geoip-dbgsym","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-ldap","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-ldap-dbgsym","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-lua","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-lua-dbgsym","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-mydns","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-mydns-dbgsym","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-mysql","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-mysql-dbgsym","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-pgsql","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-pgsql-dbgsym","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-pipe","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-pipe-dbgsym","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-remote","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-remote-dbgsym","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-sqlite3","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-sqlite3-dbgsym","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-tinydns","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-backend-tinydns-dbgsym","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-server","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-server-dbgsym","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-tools","binary_version":"4.0.0~alpha2-3build1"},{"binary_name":"pdns-tools-dbgsym","binary_version":"4.0.0~alpha2-3build1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-5427.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}