Multiple buffer overflows in the ctl_put* functions in NTP before 4.2.8p10 and 4.3.x before 4.3.94 allow remote authenticated users to have unspecified impact via a long variable.
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
https://support.f5.com/csp/article/K99254031
https://support.apple.com/kb/HT208144
https://support.apple.com/HT208144
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
https://bto.bluecoat.com/security-advisory/sa147
http://www.ubuntu.com/usn/USN-3349-1
http://www.securitytracker.com/id/1038123
http://www.securityfocus.com/bid/97051
http://www.securityfocus.com/archive/1/archive/1/540464/100/0/threaded
http://support.ntp.org/bin/view/Main/SecurityNotice#March_2017_ntp_4_2_8p10_NTP_Secu
http://support.ntp.org/bin/view/Main/NtpBug3379
http://seclists.org/fulldisclosure/2017/Sep/62
http://seclists.org/fulldisclosure/2017/Nov/7
http://packetstormsecurity.com/files/142284/Slackware-Security-Advisory-ntp-Updates.html