evolution-data-server (eds) through 3.36.3 has a STARTTLS buffering issue that affects SMTP and POP3. When a server sends a “begin TLS” response, eds reads additional data and evaluates it in a TLS context, aka “response injection.”
bugzilla.suse.com/show_bug.cgi?id=1173910
gitlab.gnome.org/GNOME//evolution-data-server/commit/ba82be72cfd427b5d72ff21f929b3a6d8529c4df
gitlab.gnome.org/GNOME/evolution-data-server/-/commit/f404f33fb01b23903c2bbb16791c7907e457fbac
gitlab.gnome.org/GNOME/evolution-data-server/-/issues/226
lists.debian.org/debian-lts-announce/2020/07/msg00012.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMBEZWA22EAYAZQWUX4KPEBER726KSIG/
security-tracker.debian.org/tracker/DLA-2281-1
security-tracker.debian.org/tracker/DSA-4725-1
usn.ubuntu.com/4429-1/
www.debian.org/security/2020/dsa-4725