{"schemaVersion":3,"id":"MGASA-2015-0152","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated ntp packages fix security vulnerabilities\n\nUpdated 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).","dates":{"published":"2015-04-15T09:01:28.000Z","modified":"2026-04-16T06:24:41.169Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"mageia","product":"ntp","name":"ntp","label":"ntp","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/ntp","purlType":"rpm","versions":[{"text":"< 4.2.6p5-15.5.mga4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.2.6p5-15.5.mga4","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2015-0152.html","label":"advisories.mageia.org/MGASA-2015-0152.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=15646","label":"bugs.mageia.org/show_bug.cgi?id=15646","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities","label":"support.ntp.org/bin/view/Main/SecurityNotice","hostname":"support.ntp.org","tags":["WEB"]}],"lineage":{"upstream":["CVE-2015-1798","CVE-2015-1799"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2015-04-15T09:01:28.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-16T06:24:41.169Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T04:11:07.326Z","stale":false,"partial":false}}