{"id":"UBUNTU-CVE-2016-0747","details":"The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 does not properly limit CNAME resolution, which allows remote attackers to cause a denial of service (worker process resource consumption) via vectors related to arbitrary name resolution.","modified":"2026-02-04T03:59:29.544223Z","published":"2016-01-26T00:00:00Z","related":["USN-2892-1"],"upstream":["CVE-2016-0747"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-0747"},{"type":"REPORT","url":"http://mailman.nginx.org/pipermail/nginx/2016-January/049700.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2892-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-0747"}],"affected":[{"package":{"name":"nginx","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/nginx@1.4.6-1ubuntu3.4?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.6-1ubuntu3.4"}]}],"versions":["1.4.1-3ubuntu1","1.4.3-2ubuntu1","1.4.4-1ubuntu1","1.4.4-2ubuntu1","1.4.4-4ubuntu1","1.4.5-1ubuntu1","1.4.6-1ubuntu2","1.4.6-1ubuntu3","1.4.6-1ubuntu3.1","1.4.6-1ubuntu3.2","1.4.6-1ubuntu3.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.4.6-1ubuntu3.4","binary_name":"nginx"},{"binary_version":"1.4.6-1ubuntu3.4","binary_name":"nginx-common"},{"binary_version":"1.4.6-1ubuntu3.4","binary_name":"nginx-core"},{"binary_version":"1.4.6-1ubuntu3.4","binary_name":"nginx-extras"},{"binary_version":"1.4.6-1ubuntu3.4","binary_name":"nginx-full"},{"binary_version":"1.4.6-1ubuntu3.4","binary_name":"nginx-light"},{"binary_version":"1.4.6-1ubuntu3.4","binary_name":"nginx-naxsi"},{"binary_version":"1.4.6-1ubuntu3.4","binary_name":"nginx-naxsi-ui"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-0747.json"}},{"package":{"name":"nginx","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/nginx@1.9.10-0ubuntu1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.10-0ubuntu1"}]}],"versions":["1.9.3-1ubuntu1","1.9.6-2ubuntu1","1.9.6-2ubuntu2","1.9.9-0ubuntu1","1.9.9-1ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.9.10-0ubuntu1","binary_name":"nginx"},{"binary_version":"1.9.10-0ubuntu1","binary_name":"nginx-common"},{"binary_version":"1.9.10-0ubuntu1","binary_name":"nginx-core"},{"binary_version":"1.9.10-0ubuntu1","binary_name":"nginx-extras"},{"binary_version":"1.9.10-0ubuntu1","binary_name":"nginx-full"},{"binary_version":"1.9.10-0ubuntu1","binary_name":"nginx-light"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-0747.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}