ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp. CREATE(Triage):(User=admin) [CVE-2020-11868|https://nvd.nist.gov/vuln/detail/CVE-2020-11868]
