{"id":"USN-4563-2","summary":"ntp vulnerability","details":"USN-4563-1 fixed a vulnerability in NTP. This update provides the\ncorresponding update for Ubuntu 20.04 LTS and Ubuntu 20.10.\n\nOriginal advisory details:\n\n It was discovered that the fix for CVE-2018-7182 introduced a NULL pointer\n dereference into NTP. An attacker could use this vulnerability to cause a\n denial of service (crash).\n","modified":"2026-02-10T04:41:56Z","published":"2021-04-20T13:38:45Z","related":["UBUNTU-CVE-2019-8936"],"upstream":["CVE-2019-8936","UBUNTU-CVE-2019-8936"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4563-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-8936"}],"affected":[{"package":{"name":"ntp","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ntp@1:4.2.8p12+dfsg-3ubuntu4.20.04.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.2.8p12+dfsg-3ubuntu4.20.04.1"}]}],"versions":["1:4.2.8p12+dfsg-3ubuntu2","1:4.2.8p12+dfsg-3ubuntu3","1:4.2.8p12+dfsg-3ubuntu4"],"ecosystem_specific":{"binaries":[{"binary_version":"1:4.2.8p12+dfsg-3ubuntu4.20.04.1","binary_name":"ntp"},{"binary_version":"1:4.2.8p12+dfsg-3ubuntu4.20.04.1","binary_name":"ntpdate"},{"binary_version":"1:4.2.8p12+dfsg-3ubuntu4.20.04.1","binary_name":"sntp"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4563-2.json","cves_map":{"ecosystem":"Ubuntu:20.04:LTS","cves":[{"id":"CVE-2019-8936","severity":[{"score":"CVSS:3.1/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:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]}}}],"schema_version":"1.7.3"}