NTP before 4.2.8p9 does not properly perform the initial sync calculations, which allows remote attackers to unspecified impact via unknown vectors, related to a "root distance that did not include the peer dispersion."
https://www.kb.cert.org/vuls/id/633847
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
http://support.ntp.org/bin/view/Main/NtpBug3067
http://nwtime.org/ntp428p9_release/
http://www.securityfocus.com/bid/94455
https://bto.bluecoat.com/security-advisory/sa139
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us
http://www.securitytracker.com/id/1037354
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc
http://rhn.redhat.com/errata/RHSA-2017-0252.html
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
Source: MITRE
Published: 2017-01-13
Updated: 2021-07-16
Type: CWE-682
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 5.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Impact Score: 1.4
Exploitability Score: 3.9
Severity: MEDIUM