A gnutls security update has been released for Fedora 31.

SECURITY: Fedora 31 Update: gnutls-3.6.14-1.fc31

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Fedora Update Notification
FEDORA-2020-76b705bb63
2020-06-14 17:10:11.229554
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Name : gnutls
Product : Fedora 31
Version : 3.6.14
Release : 1.fc31
URL :   http://www.gnutls.org/
Summary : A TLS protocol implementation
Description :
GnuTLS is a secure communications library implementing the SSL, TLS and DTLS
protocols and technologies around them. It provides a simple C language
application programming interface (API) to access the secure communications
protocols as well as APIs to parse and write X.509, PKCS #12, OpenPGP and
other required structures.

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Update Information:

Update to upstream 3.6.14 release, and security fix for CVE-2020-13777. ---- -
Fix certificate chain validation involving the expired "AddTrust External Root".
- Disable RSA blinding during FIPS self-tests to avoid hanging if there is not
enough entropy for `getrandom()` - Add `--waitresumption` option to `gnutls-cli`
to force the client to wait for resumption data (new session ticket) under TLS
1.3
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ChangeLog:

* Thu Jun 4 2020 Daiki Ueno - 3.6.14-1
- Update to upstream 3.6.14 release
* Sun May 31 2020 Daiki Ueno - 3.6.13-6
- Update gnutls-3.6.13-superseding-chain.patch
* Sun May 31 2020 Daiki Ueno - 3.6.13-5
- Fix cert chain validation behavior if the last cert has expired (#1842178)
* Mon May 25 2020 Anderson Sasaki - 3.6.13-4
- Add option to gnutls-cli to wait for resumption under TLS 1.3
* Tue May 19 2020 Anderson Sasaki - 3.6.13-3
- Disable RSA blinding during FIPS self-tests
* Tue Mar 31 2020 Daiki Ueno - 3.6.13-1
- Update to upstream 3.6.13 release
* Thu Mar 26 2020 Anderson Sasaki - 3.6.12-2
- Update to upstream 3.6.12 release
- Remove gpgkey file from sources
- Fix FIPS POST (#1813384)
- Fix gnutls-serv --echo to not exit when a message is received (#1816583)
* Sun Dec 1 2019 Nikos Mavrogiannopoulos - 3.6.11-1
- Update to upstream 3.6.11 release
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References:

[ 1 ] Bug #1843723 - CVE-2020-13777 gnutls: session resumption works without master key allowing MITM
  https://bugzilla.redhat.com/show_bug.cgi?id=1843723
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-76b705bb63' 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