A c-ares security update has been released for Fedora 33.

SECURITY: Fedora 33 Update: c-ares-1.17.0-1.fc33

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Fedora Update Notification
FEDORA-2020-7473744de1
2020-11-28 02:02:44.954673
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Name : c-ares
Product : Fedora 33
Version : 1.17.0
Release : 1.fc33
URL :   http://c-ares.haxx.se/
Summary : A library that performs asynchronous DNS operations
Description :
c-ares is a C library that performs DNS requests and name resolves
asynchronously. c-ares is a fork of the library named 'ares', written
by Greg Hudson at MIT.

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Update Information:

Security fix for CVE-2020-8277.
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ChangeLog:

* Tue Nov 17 2020 Tom Callaway - 1.17.0-1
- update to 1.17.0
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References:

[ 1 ] Bug #1898554 - CVE-2020-8277 c-ares: ares_parse_{a,aaaa}_reply() insufficient naddrttls validation DoS
  https://bugzilla.redhat.com/show_bug.cgi?id=1898554
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-7473744de1' 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