A thunderbird security update has been released for Fedora 30.

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Fedora Update Notification
FEDORA-2020-d18d24c943
2020-01-31 01:11:29.743281
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Name : thunderbird
Product : Fedora 30
Version : 68.4.1
Release : 1.fc30
URL :   http://www.mozilla.org/projects/thunderbird/
Summary : Mozilla Thunderbird mail/newsgroup client
Description :
Mozilla Thunderbird is a standalone mail and newsgroup client.

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Update Information:

Update to latest upstream version
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ChangeLog:

* Mon Jan 13 2020 Jan Horak - 68.4.1-1
- Update to 68.4.1 build1
* Tue Dec 17 2019 Jan Horak - 68.3.1-1
- Update to 68.3.1 build1
* Mon Dec 9 2019 Martin Stransky - 68.3.0-2
- Added fix for mzbz#1576268
* Tue Dec 3 2019 Jan Horak - 68.3.0-1
- Update to 68.3.0 build2
* Tue Nov 5 2019 Jan Horak - 68.2.2-1
- Update to 68.2.2 build1
* Fri Nov 1 2019 Jan Horak - 68.2.1-1
- Update to 68.2.1 build1
* Tue Oct 29 2019 Jan Horak - 68.2.0-1
- Update to 68.2.0
* Wed Oct 23 2019 Jan Horak - 68.1.1-4
- Added symbolic icon
* Thu Oct 3 2019 Jan Horak - 68.1.1-3
- Allow downgrades of the profile because after distro upgrade there is a chance
that the the downgrade refusal dialog is shown.
* Fri Sep 27 2019 Jan Horak - 68.1.1-1
- Update to 68.1.1
* Thu Sep 26 2019 Martin Stransky - 68.1.0-2
- Allow profile downgrade
* Thu Sep 12 2019 Jan Horak - 68.1.0-1
- Update to 68.1.0
* Thu Aug 29 2019 Jan Horak - 68.0-1
- Update to 68.0
* Sat Jul 27 2019 Fedora Release Engineering - 60.8.0-2
- Rebuilt for   https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild
* Wed Jul 10 2019 Martin Stransky - 60.8.0-1
- Update to 60.8.0
* Fri Jun 21 2019 Jan Horak - 60.7.2-2
- Update to 60.7.2 build 2
* Thu Jun 20 2019 Jan Horak - 60.7.2-1
- Update to 60.7.2
* Tue Jun 18 2019 Jan Horak - 60.7.1-1
- Update to 60.7.1
* Mon May 20 2019 Martin Stransky - 60.7.0-1
- Update to 60.7.0
* Wed May 15 2019 Martin Stransky - 60.6.1-5
- Fixed startup crashes (rhbz#1709373, rhbz#1685276, rhbz#1708611)
* Fri Apr 12 2019 Martin Stransky - 60.6.1-4
- Addef fix for mozbz#1508378
* Wed Apr 3 2019 Martin Stransky - 60.6.1-3
- Added fixes for mozbz#1526243, mozbz#1540145, mozbz#526293
* Tue Mar 26 2019 Martin Stransky - 60.6.1-2
- Added rawhide build fix
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-d18d24c943' 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