{"id":"UBUNTU-CVE-2016-2519","details":"ntpd in NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (ntpd abort) by a large request data value, which triggers the ctl_getitem function to return a NULL value.","modified":"2026-02-04T02:25:23.771462Z","published":"2017-01-30T00:00:00Z","related":["USN-3349-1"],"upstream":["CVE-2016-2519"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-2519"},{"type":"REPORT","url":"http://support.ntp.org/bin/view/Main/SecurityNotice#April_2016_NTP_4_2_8p7_Security"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3349-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-2519"}],"affected":[{"package":{"name":"ntp","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/ntp@1:4.2.8p4+dfsg-3ubuntu5.5?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.2.8p4+dfsg-3ubuntu5.5"}]}],"versions":["1:4.2.6.p5+dfsg-3ubuntu8","1:4.2.6.p5+dfsg-3ubuntu8.1","1:4.2.6.p5+dfsg-3ubuntu9","1:4.2.8p4+dfsg-3ubuntu1","1:4.2.8p4+dfsg-3ubuntu2","1:4.2.8p4+dfsg-3ubuntu3","1:4.2.8p4+dfsg-3ubuntu4","1:4.2.8p4+dfsg-3ubuntu5","1:4.2.8p4+dfsg-3ubuntu5.1","1:4.2.8p4+dfsg-3ubuntu5.2","1:4.2.8p4+dfsg-3ubuntu5.3","1:4.2.8p4+dfsg-3ubuntu5.4"],"ecosystem_specific":{"binaries":[{"binary_name":"ntp","binary_version":"1:4.2.8p4+dfsg-3ubuntu5.5"},{"binary_name":"ntpdate","binary_version":"1:4.2.8p4+dfsg-3ubuntu5.5"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2519.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}