Fedora 32: Unbound DoS and Loop Risks Critical Advisory

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.

Security fix for CVE-2020-12662 and CVE-2020-12663

* Tue May 19 2020 Paul Wouters - 1.10.1-1

- Resolves: rhbz#1837279 unbound-1.10.1 is available

- Resolves: rhbz#1837598 CVE-2020-12662 unbound: insufficient control of network message volume leads to DoS

- Resolves: rhbz#1837609 CVE-2020-12663 unbound: infinite loop via malformed DNS answers received from upstream servers

- Updated unbound.conf for new options in 1.10.1

[ 1 ] Bug #1837597 - CVE-2020-12662 unbound: amplification of an incoming query into a large number of queries directed to a target

https://bugzilla.redhat.com/show_bug.cgi?id=1837597

[ 2 ] Bug #1837604 - CVE-2020-12663 unbound: infinite loop via malformed DNS answers received from upstream servers

https://bugzilla.redhat.com/show_bug.cgi?id=1837604

su -c 'dnf upgrade --advisory FEDORA-2020-3cfd38fefd' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

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

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