bouncycastle generates a weak private DSA key when the default values are used.
access.redhat.com/errata/RHSA-2018:2669
access.redhat.com/errata/RHSA-2018:2927
github.com/bcgit/bc-java/commit/50a53068c094d6cff37659da33c9b4505becd389#diff-5578e61500abb2b87b300d3114bdfd7d
lists.apache.org/thread.html/708d94141126eac03011144a971a6411fcac16d9c248d1d535a39451@%3Csolr-user.lucene.apache.org%3E
lists.debian.org/debian-lts-announce/2018/07/msg00009.html
security.netapp.com/advisory/ntap-20181127-0004/
usn.ubuntu.com/3727-1/
vigilance.fr/vulnerability/Bouncy-Castle-multiple-vulnerabilities-21455
www.bouncycastle.org/releasenotes.html
www.oracle.com/security-alerts/cpuoct2020.html