FreeRADIUS before 3.0.19 mishandles the “each participant verifies that the received scalar is within a range, and that the received group element is a valid point on the curve being used” protection mechanism, aka a “Dragonblood” issue, a similar issue to CVE-2019-9498 and CVE-2019-9499.
lists.opensuse.org/opensuse-security-announce/2019-05/msg00014.html
lists.opensuse.org/opensuse-security-announce/2019-05/msg00032.html
lists.opensuse.org/opensuse-security-announce/2020-04/msg00033.html
access.redhat.com/errata/RHSA-2019:1131
access.redhat.com/errata/RHSA-2019:1142
bugzilla.redhat.com/show_bug.cgi?id=1695748
freeradius.org/release_notes/?br=3.0.x&re=3.0.19
freeradius.org/security/
papers.mathyvanhoef.com/dragonblood.pdf
usn.ubuntu.com/3954-1/
www.kb.cert.org/vuls/id/871675/