{"id":"UBUNTU-CVE-2016-2120","details":"An issue has been found in PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 allowing an authorized user to crash the server by inserting a specially crafted record in a zone under their control then sending a DNS query for that record. The issue is due to an integer overflow when checking if the content of the record matches the expected size, allowing an attacker to cause a read past the buffer boundary.","modified":"2025-09-08T16:43:37Z","published":"2018-11-01T13:29:00Z","upstream":["CVE-2016-2120"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-2120"},{"type":"REPORT","url":"https://doc.powerdns.com/md/security/powerdns-advisory-2016-05/"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-2120"}],"affected":[{"package":{"name":"pdns","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/pdns@4.0.0~alpha2-3ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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","4.0.0~alpha2-3build1","4.0.0~alpha2-3ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"pdns-backend-geoip","binary_version":"4.0.0~alpha2-3ubuntu0.1~esm1"},{"binary_name":"pdns-backend-ldap","binary_version":"4.0.0~alpha2-3ubuntu0.1~esm1"},{"binary_name":"pdns-backend-lua","binary_version":"4.0.0~alpha2-3ubuntu0.1~esm1"},{"binary_name":"pdns-backend-mydns","binary_version":"4.0.0~alpha2-3ubuntu0.1~esm1"},{"binary_name":"pdns-backend-mysql","binary_version":"4.0.0~alpha2-3ubuntu0.1~esm1"},{"binary_name":"pdns-backend-pgsql","binary_version":"4.0.0~alpha2-3ubuntu0.1~esm1"},{"binary_name":"pdns-backend-pipe","binary_version":"4.0.0~alpha2-3ubuntu0.1~esm1"},{"binary_name":"pdns-backend-remote","binary_version":"4.0.0~alpha2-3ubuntu0.1~esm1"},{"binary_name":"pdns-backend-sqlite3","binary_version":"4.0.0~alpha2-3ubuntu0.1~esm1"},{"binary_name":"pdns-backend-tinydns","binary_version":"4.0.0~alpha2-3ubuntu0.1~esm1"},{"binary_name":"pdns-server","binary_version":"4.0.0~alpha2-3ubuntu0.1~esm1"},{"binary_name":"pdns-tools","binary_version":"4.0.0~alpha2-3ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2120.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":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}