[SECURITY] Fedora 38 Update: unbound-1.19.1-1.fc38
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Fedora Update Notification
FEDORA-2024-c967c7d287
2024-02-29 01:56:37.413916
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Name : unbound
Product : Fedora 38
Version : 1.19.1
Release : 1.fc38
URL : https://nlnetlabs.nl/projects/unbound/
Summary : Validating, recursive, and caching DNS(SEC) resolver
Description :
Unbound is a validating, recursive, and caching DNS(SEC) resolver.
The C implementation of Unbound is developed and maintained by NLnet
Labs. It is based on ideas and algorithms taken from a java prototype
developed by Verisign labs, Nominet, Kirei and ep.net.
Unbound is designed as a set of modular components, so that also
DNSSEC (secure DNS) validation and stub-resolvers (that do not run
as a server, but are linked into an application) are easily possible.
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Update Information:
Fix CVE-2023-50387, DNSSEC verification complexity can be exploited to exhaust
CPU resources and stall DNS resolvers.
Fix CVE-2023-50868, NSEC3 closest encloser proof can exhaust CPU.
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ChangeLog:
* Tue Feb 13 2024 Petr Men����k <pemensik(a)redhat.com> - 1.19.1-1
- Update to 1.19.1 for CVE-2023-50387, CVE-2023-50868 (#2264029)
- Ensure only unbound group members can make changes
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References:
[ 1 ] Bug #2264029 - unbound-1.19.1 is available
https://bugzilla.redhat.com/show_bug.cgi?id=2264029
[ 2 ] Bug #2264101 - CVE-2023-50868 unbound: bind9: Preparing an NSEC3 closest encloser
proof can exhaust CPU resources [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2264101
[ 3 ] Bug #2264104 - CVE-2023-50387 unbound: bind9: KeyTrap - Extreme CPU consumption in
DNSSEC validator [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2264104
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2024-c967c7d287' 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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