{"id":"MGASA-2015-0152","summary":"Updated ntp packages fix security vulnerabilities","details":"Updated ntp packages fix security vulnerabilities:\n\nThe symmetric-key feature in the receive function in ntp_proto.c in ntpd in\nNTP before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero\nlength, which makes it easier for man-in-the-middle attackers to spoof packets\nby omitting the MAC (CVE-2015-1798).\n\nThe symmetric-key feature in the receive function in ntp_proto.c in ntpd in\nNTP before 4.2.8p2 performs state-variable updates upon receiving certain\ninvalid packets, which makes it easier for man-in-the-middle attackers to\ncause a denial of service (synchronization loss) by spoofing the source IP\naddress of a peer (CVE-2015-1799).\n","modified":"2026-04-16T06:24:41.169795060Z","published":"2015-04-15T09:01:28Z","upstream":["CVE-2015-1798","CVE-2015-1799"],"references":[{"type":"ADVISORY","url":"https://advisories.mageia.org/MGASA-2015-0152.html"},{"type":"REPORT","url":"https://bugs.mageia.org/show_bug.cgi?id=15646"},{"type":"WEB","url":"http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities"}],"affected":[{"package":{"name":"ntp","ecosystem":"Mageia:4","purl":"pkg:rpm/mageia/ntp?arch=source&distro=mageia-4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.6p5-15.5.mga4"}]}],"ecosystem_specific":{"section":"core"},"database_specific":{"source":"https://advisories.mageia.org/MGASA-2015-0152.json"}}],"schema_version":"1.7.5","credits":[{"name":"Mageia","contact":["https://wiki.mageia.org/en/Packages_Security_Team"],"type":"COORDINATOR"}]}