NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network.
lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html
lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html
lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html
lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html
lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html
lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
lists.opensuse.org/opensuse-updates/2016-05/msg00114.html
support.ntp.org/bin/view/Main/NtpBug2935
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-ntpd
www.securityfocus.com/bid/81963
www.securitytracker.com/id/1034782
www.ubuntu.com/usn/USN-3096-1
bto.bluecoat.com/security-advisory/sa113
cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_us
h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us
security.FreeBSD.org/advisories/FreeBSD-SA-16:09.ntp.asc
security.gentoo.org/glsa/201607-15
security.netapp.com/advisory/ntap-20171031-0001/
us-cert.cisa.gov/ics/advisories/icsa-21-103-11
www.kb.cert.org/vuls/id/718152