[SECURITY] Fedora 38 Update: bind9-next-9.19.21-1.fc38

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Fedora Update Notification
FEDORA-2024-c36c448396
2024-02-26 00:46:58.184258
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Name        : bind9-next
Product     : Fedora 38
Version     : 9.19.21
Release     : 1.fc38
URL         : https://www.isc.org/downloads/bind/
Summary     : The Berkeley Internet Name Domain (BIND) DNS (Domain Name System) server
Description :
BIND (Berkeley Internet Name Domain) is an implementation of the DNS
(Domain Name System) protocols. BIND includes a DNS server (named),
which resolves host names to IP addresses; a resolver library
(routines for applications to use when interfacing with DNS); and
tools for verifying that the DNS server is operating properly.

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Update Information:

Security Fixes
Validating DNS messages containing a lot of DNSSEC signatures could cause
excessive CPU load, leading to a denial-of-service condition. This has been
fixed. (CVE-2023-50387)
ISC would like to thank Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael
Waidner from the German National Research Center for Applied Cybersecurity
ATHENE for bringing this vulnerability to our attention. [GL #4424]
Parsing DNS messages with many different names could cause excessive CPU load.
This has been fixed. (CVE-2023-4408)
ISC would like to thank Shoham Danino from Reichman University, Anat Bremler-
Barr from Tel-Aviv University, Yehuda Afek from Tel-Aviv University, and Yuval
Shavitt from Tel-Aviv University for bringing this vulnerability to our
attention. [GL #4234]
Specific queries could cause named to crash with an assertion failure when
nxdomain-redirect was enabled. This has been fixed. (CVE-2023-5517) [GL #4281]
A bad interaction between DNS64 and serve-stale could cause named to crash with
an assertion failure, when both of these features were enabled. This has been
fixed. (CVE-2023-5679) [GL #4334]
Related blog post
BIND 9 Security Release and Multi-Vendor Vulnerability Handling, CVE-2023-50387
and CVE-2023-50868
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ChangeLog:

* Sat Feb 17 2024 Petr Men����k  - 32:9.19.21-1
- Update to 9.19.21 (#2264048)
* Tue Jan 16 2024 Petr Men����k  - 32:9.19.19-3
- Update changed b.root-servers.net address in hints (#2253463)
* Tue Jan 16 2024 Petr Men����k  - 32:9.19.19-2
- Remove i686 compatibility changes
* Tue Jan 16 2024 Petr Men����k  - 32:9.19.19-1
- Update to 9.19.19 (#2255406)
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References:

[ 1 ] Bug #2264048 - bind9-next-9.19.21 is available
        https://bugzilla.redhat.com/show_bug.cgi?id=2264048
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2024-c36c448396' 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
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