{"action":"Upgrade ntp to 1:4.2.6.p5+dfsg-6 or later.","affected":[{"fixed":"1:4.2.6.p5+dfsg-6","introduced":"0"}],"component":"ntp","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:11","exploited":false,"fixed_versions":["1:4.2.6.p5+dfsg-6"],"id":"tcs_01M5NB4RP6GBY5AFZEV3D2J8XX","modified_at":"2026-08-27T22:47:49.594974554Z","published_at":"2015-04-08T10:59:04.610Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2015-1798","https://security-tracker.debian.org/tracker/CVE-2015-1798"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2015-1798","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2015-1798"}],"summary":"The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-t"}