A evolution-data-server security update has been released for Fedora 31.

SECURITY: Fedora 31 Update: evolution-data-server-3.34.4-2.fc31

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Fedora Update Notification
FEDORA-2020-45041afb19
2020-08-01 01:17:15.822302
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Name : evolution-data-server
Product : Fedora 31
Version : 3.34.4
Release : 2.fc31
URL :   https://wiki.gnome.org/Apps/Evolution
Summary : Backend data server for Evolution
Description :
The evolution-data-server package provides a unified backend for programs that work
with contacts, tasks, and calendar information.

It was originally developed for Evolution (hence the name), but is now used
by other packages.

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Update Information:

Security fix for CVE-2020-14928 (Response Injection via STARTTLS in SMTP and
POP3)
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ChangeLog:

* Thu Jul 16 2020 Milan Crha - 3.34.4-2
- Add patch for CVE-2020-14928 (Response Injection via STARTTLS in SMTP and POP3)
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References:

[ 1 ] Bug #1857470 - CVE-2020-14928 evolution-data-server: Response Injection via STARTTLS in SMTP and POP3
  https://bugzilla.redhat.com/show_bug.cgi?id=1857470
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-45041afb19' at the command
line. For more information, refer to the dnf documentation available at
  http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
  https://fedoraproject.org/keys