{"id":"CVE-2018-8956","details":"ntpd in ntp 4.2.8p10, 4.2.8p11, 4.2.8p12 and 4.2.8p13 allow remote attackers to prevent a broadcast client from synchronizing its clock with a broadcast NTP server via soofed mode 3 and mode 5 packets. The attacker must either be a part of the same broadcast network or control a slave in that broadcast network that can capture certain required packets on the attacker's behalf and send them to the attacker.","modified":"2026-03-15T22:28:48.565745Z","published":"2020-05-06T19:15:12.410Z","related":["SUSE-SU-2020:14415-1","SUSE-SU-2020:1805-1","SUSE-SU-2020:1823-1","openSUSE-SU-2020:0934-1","openSUSE-SU-2020:1007-1","openSUSE-SU-2024:11102-1"],"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html"},{"type":"ADVISORY","url":"http://www.ntp.org/"},{"type":"ADVISORY","url":"https://arxiv.org/abs/2005.01783"},{"type":"ADVISORY","url":"https://nikhiltripathi.in/NTP_attack.pdf"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20200518-0006/"},{"type":"ADVISORY","url":"https://tools.ietf.org/html/rfc5905"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"4.2.8-p10"}]},{"events":[{"introduced":"0"},{"last_affected":"4.2.8-p11"}]},{"events":[{"introduced":"0"},{"last_affected":"4.2.8-p12"}]},{"events":[{"introduced":"0"},{"last_affected":"4.2.8-p13"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-8956.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}