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Red Hat Security Advisory

Synopsis:          Moderate: unbound security update
Advisory ID:       RHSA-2023:2370-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:2370
Issue date:        2023-05-09
CVE Names:         CVE-2022-3204
====================================================================
1. Summary:

An update for unbound is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream (v. 9) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux CRB (v. 9) - aarch64, ppc64le, s390x, x86_64

3. Description:

The unbound packages provide a validating, recursive, and caching DNS or
DNSSEC resolver.

Security Fix(es):

* unbound: NRDelegation attack leads to uncontrolled resource consumption
(Non-Responsive Delegation Attack) (CVE-2022-3204)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 9.2 Release Notes linked from the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

2128947 - CVE-2022-3204 unbound: NRDelegation attack leads to uncontrolled resource consumption (Non-Responsive Delegation Attack)

6. Package List:

Red Hat Enterprise Linux AppStream (v. 9):

Source:
unbound-1.16.2-3.el9.src.rpm

aarch64:
python3-unbound-1.16.2-3.el9.aarch64.rpm
python3-unbound-debuginfo-1.16.2-3.el9.aarch64.rpm
unbound-1.16.2-3.el9.aarch64.rpm
unbound-debuginfo-1.16.2-3.el9.aarch64.rpm
unbound-debugsource-1.16.2-3.el9.aarch64.rpm
unbound-libs-1.16.2-3.el9.aarch64.rpm
unbound-libs-debuginfo-1.16.2-3.el9.aarch64.rpm

ppc64le:
python3-unbound-1.16.2-3.el9.ppc64le.rpm
python3-unbound-debuginfo-1.16.2-3.el9.ppc64le.rpm
unbound-1.16.2-3.el9.ppc64le.rpm
unbound-debuginfo-1.16.2-3.el9.ppc64le.rpm
unbound-debugsource-1.16.2-3.el9.ppc64le.rpm
unbound-libs-1.16.2-3.el9.ppc64le.rpm
unbound-libs-debuginfo-1.16.2-3.el9.ppc64le.rpm

s390x:
python3-unbound-1.16.2-3.el9.s390x.rpm
python3-unbound-debuginfo-1.16.2-3.el9.s390x.rpm
unbound-1.16.2-3.el9.s390x.rpm
unbound-debuginfo-1.16.2-3.el9.s390x.rpm
unbound-debugsource-1.16.2-3.el9.s390x.rpm
unbound-libs-1.16.2-3.el9.s390x.rpm
unbound-libs-debuginfo-1.16.2-3.el9.s390x.rpm

x86_64:
python3-unbound-1.16.2-3.el9.x86_64.rpm
python3-unbound-debuginfo-1.16.2-3.el9.i686.rpm
python3-unbound-debuginfo-1.16.2-3.el9.x86_64.rpm
unbound-1.16.2-3.el9.x86_64.rpm
unbound-debuginfo-1.16.2-3.el9.i686.rpm
unbound-debuginfo-1.16.2-3.el9.x86_64.rpm
unbound-debugsource-1.16.2-3.el9.i686.rpm
unbound-debugsource-1.16.2-3.el9.x86_64.rpm
unbound-libs-1.16.2-3.el9.i686.rpm
unbound-libs-1.16.2-3.el9.x86_64.rpm
unbound-libs-debuginfo-1.16.2-3.el9.i686.rpm
unbound-libs-debuginfo-1.16.2-3.el9.x86_64.rpm

Red Hat Enterprise Linux CRB (v. 9):

aarch64:
python3-unbound-debuginfo-1.16.2-3.el9.aarch64.rpm
unbound-debuginfo-1.16.2-3.el9.aarch64.rpm
unbound-debugsource-1.16.2-3.el9.aarch64.rpm
unbound-devel-1.16.2-3.el9.aarch64.rpm
unbound-libs-debuginfo-1.16.2-3.el9.aarch64.rpm

ppc64le:
python3-unbound-debuginfo-1.16.2-3.el9.ppc64le.rpm
unbound-debuginfo-1.16.2-3.el9.ppc64le.rpm
unbound-debugsource-1.16.2-3.el9.ppc64le.rpm
unbound-devel-1.16.2-3.el9.ppc64le.rpm
unbound-libs-debuginfo-1.16.2-3.el9.ppc64le.rpm

s390x:
python3-unbound-debuginfo-1.16.2-3.el9.s390x.rpm
unbound-debuginfo-1.16.2-3.el9.s390x.rpm
unbound-debugsource-1.16.2-3.el9.s390x.rpm
unbound-devel-1.16.2-3.el9.s390x.rpm
unbound-libs-debuginfo-1.16.2-3.el9.s390x.rpm

x86_64:
python3-unbound-debuginfo-1.16.2-3.el9.i686.rpm
python3-unbound-debuginfo-1.16.2-3.el9.x86_64.rpm
unbound-debuginfo-1.16.2-3.el9.i686.rpm
unbound-debuginfo-1.16.2-3.el9.x86_64.rpm
unbound-debugsource-1.16.2-3.el9.i686.rpm
unbound-debugsource-1.16.2-3.el9.x86_64.rpm
unbound-devel-1.16.2-3.el9.i686.rpm
unbound-devel-1.16.2-3.el9.x86_64.rpm
unbound-libs-debuginfo-1.16.2-3.el9.i686.rpm
unbound-libs-debuginfo-1.16.2-3.el9.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2022-3204
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/9.2_release_notes/index

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2023 Red Hat, Inc.
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