7:27 p.m.
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Fedora Update Notification
FEDORA-2024-fae88b73eb
2024-03-04 01:26:36.607429
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Name : bind
Product : Fedora 38
Version : 9.18.24
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]
Under certain circumstances, the DNS-over-TLS client code incorrectly attempted
to process more than one DNS message at a time, which could cause named to crash
with an assertion failure. This has been fixed. [GL #4487]
Full Release notes
Related blog post
BIND 9 Security Release and Multi-Vendor Vulnerability Handling, CVE-2023-50387
and CVE-2023-50868
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ChangeLog:
* Thu Feb 15 2024 Petr Men����k <pemensik(a)redhat.com> - 32:9.18.24-1
- Update to 9.18.24 (#2264032)
* Tue Jan 16 2024 Petr Men����k <pemensik(a)redhat.com> - 32:9.18.20-2
- Update changed b.root-servers.net address in hints (#2253460)
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References:
[ 1 ] Bug #2240253 - unit test rbtdb_test reliably fails on i686 builds
https://bugzilla.redhat.com/show_bug.cgi?id=2240253
[ 2 ] Bug #2253460 - bind: Update of b.root-servers.net
https://bugzilla.redhat.com/show_bug.cgi?id=2253460
[ 3 ] Bug #2264032 - bind-9.18.24 is available
https://bugzilla.redhat.com/show_bug.cgi?id=2264032
[ 4 ] Bug #2264062 - CVE-2023-4408 bind: bind9: Parsing large DNS messages may cause
excessive CPU load [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2264062
[ 5 ] Bug #2264063 - CVE-2023-5517 bind: bind9: Querying RFC 1918 reverse zones may
cause an assertion failure when ���nxdomain-redirect��� is enabled [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2264063
[ 6 ] Bug #2264064 - CVE-2023-5679 bind: bind9: Enabling both DNS64 and serve-stale may
cause an assertion failure during recursive resolution [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2264064
[ 7 ] Bug #2264065 - CVE-2023-6516 bind: bind9: Specific recursive query patterns may
lead to an out-of-memory condition [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2264065
[ 8 ] Bug #2264067 - CVE-2023-50387 bind: bind9: KeyTrap - Extreme CPU consumption in
DNSSEC validator [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2264067
[ 9 ] Bug #2264068 - CVE-2023-50868 bind: bind9: Preparing an NSEC3 closest encloser
proof can exhaust CPU resources [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2264068
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2024-fae88b73eb' 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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