{"id":"UBUNTU-CVE-2018-7184","details":"ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the \"received\" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.","modified":"2026-02-04T04:00:22.549172Z","published":"2018-03-06T00:00:00Z","related":["USN-3707-1"],"upstream":["CVE-2018-7184"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-7184"},{"type":"REPORT","url":"http://www.kb.cert.org/vuls/id/961909"},{"type":"REPORT","url":"http://support.ntp.org/bin/view/Main/SecurityNotice#February_2018_ntp_4_2_8p11_NTP_S"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3707-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-7184"}],"affected":[{"package":{"name":"ntp","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/ntp@1:4.2.8p10+dfsg-5ubuntu7.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.2.8p10+dfsg-5ubuntu7.1"}]}],"versions":["1:4.2.8p10+dfsg-5ubuntu3","1:4.2.8p10+dfsg-5ubuntu4","1:4.2.8p10+dfsg-5ubuntu5","1:4.2.8p10+dfsg-5ubuntu6","1:4.2.8p10+dfsg-5ubuntu7"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1:4.2.8p10+dfsg-5ubuntu7.1","binary_name":"ntp"},{"binary_version":"1:4.2.8p10+dfsg-5ubuntu7.1","binary_name":"ntpdate"},{"binary_version":"1:4.2.8p10+dfsg-5ubuntu7.1","binary_name":"sntp"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-7184.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"}]}