NTP before 4.2.8p9 allows remote attackers to bypass the origin timestamp protection mechanism via an origin timestamp of zero. NOTE: this vulnerability exists because of a CVE-2015-8138 regression.
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/NtpBug3102
http://nwtime.org/ntp428p9_release/
http://www.securityfocus.com/bid/94454
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
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03883en_us
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03899en_us
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
Source: MITRE
Published: 2017-01-13
Updated: 2021-07-12
Type: CWE-20
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
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:L/A:N
Impact Score: 1.4
Exploitability Score: 3.9
Severity: MEDIUM