Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://lists.debian.org/debian-lts-announce/2020/05/msg00004.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html ↗
- https://security.gentoo.org/glsa/202007-12 ↗
- https://www.oracle.com//security-alerts/cpujul2021.html ↗
- http://support.ntp.org/bin/view/Main/NtpBug3592 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=1716665 ↗
- https://security.netapp.com/advisory/ntap-20200424-0002/ ↗