SUSE-SU-2024:1991-2

This update for unbound fixes the following issues:

unbound was updated to 1.20.0:

• A lot of bugfixes and added features. For a complete list take a look at the changelog located at: /usr/share/doc/packages/unbound/Changelog or https://www.nlnetlabs.nl/projects/unbound/download/

Some Noteworthy Changes:

• Removed DLV. The DLV has been decommisioned since unbound 1.5.4 and has been advised to stop using it since. The use of dlv options displays a warning.
• Remove EDNS lame procedure, do not re-query without EDNS after timeout.
• Add DNS over HTTPS
• libunbound has been upgraded to major version 8

Security Fixes: * CVE-2023-50387: DNSSEC verification complexity can be exploited to exhaust CPU resources and stall DNS resolvers. [bsc#1219823] * CVE-2023-50868: NSEC3 closest encloser proof can exhaust CPU. [bsc#1219826] * CVE-2022-30698: Novel 'ghost domain names' attack by introducing subdomain delegations. [bsc#1202033] * CVE-2022-30699: Novel 'ghost domain names' attack by updating almost expired delegation information. [bsc#1202031] * CVE-2022-3204: NRDelegation attack leads to uncontrolled resource consumption (Non-Responsive Delegation Attack). [bsc#1203643]

Packaging Changes:

• Use prefixes instead of sudo in unbound.service
• Remove no longer necessary BuildRequires: libfstrm-devel and libprotobuf-c-devel