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====================================================================                   
Red Hat Security Advisory

Synopsis:          Important: bind9.16 security update
Advisory ID:       RHSA-2022:7643-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:7643
Issue date:        2022-11-08
CVE Names:         CVE-2021-25220 CVE-2022-0396
====================================================================
1. Summary:

An update for bind9.16 is now available for Red Hat Enterprise Linux 8.

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 CodeReady Linux Builder (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

3. Description:

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain
Name System (DNS) protocols. BIND includes a DNS server (named); a resolver
library (routines for applications to use when interfacing with DNS); and
tools for verifying that the DNS server is operating correctly.

Security Fix(es):

* bind: DNS forwarders - cache poisoning vulnerability (CVE-2021-25220)

* bind: DoS from specifically crafted TCP packets (CVE-2022-0396)

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 8.7 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/):

2064512 - CVE-2021-25220 bind: DNS forwarders - cache poisoning vulnerability
2064513 - CVE-2022-0396 bind: DoS from specifically crafted TCP packets
2128601 - CVE-2022-38177 bind: memory leak in ECDSA DNSSEC verification code

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
bind9.16-9.16.23-0.9.el8.1.src.rpm

aarch64:
bind9.16-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-chroot-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-debuginfo-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-debugsource-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-libs-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-libs-debuginfo-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-utils-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-utils-debuginfo-9.16.23-0.9.el8.1.aarch64.rpm

noarch:
bind9.16-license-9.16.23-0.9.el8.1.noarch.rpm

ppc64le:
bind9.16-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-chroot-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-debuginfo-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-debugsource-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-libs-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-libs-debuginfo-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-utils-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-utils-debuginfo-9.16.23-0.9.el8.1.ppc64le.rpm

s390x:
bind9.16-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-chroot-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-debuginfo-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-debugsource-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-libs-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-libs-debuginfo-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-utils-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-utils-debuginfo-9.16.23-0.9.el8.1.s390x.rpm

x86_64:
bind9.16-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-chroot-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-debuginfo-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-debugsource-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-libs-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-libs-debuginfo-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-utils-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-utils-debuginfo-9.16.23-0.9.el8.1.x86_64.rpm

Red Hat CodeReady Linux Builder (v. 8):

aarch64:
bind9.16-debuginfo-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-debugsource-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-devel-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-dnssec-utils-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-libs-debuginfo-9.16.23-0.9.el8.1.aarch64.rpm
bind9.16-utils-debuginfo-9.16.23-0.9.el8.1.aarch64.rpm

noarch:
bind9.16-doc-9.16.23-0.9.el8.1.noarch.rpm
python3-bind9.16-9.16.23-0.9.el8.1.noarch.rpm

ppc64le:
bind9.16-debuginfo-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-debugsource-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-devel-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-dnssec-utils-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-libs-debuginfo-9.16.23-0.9.el8.1.ppc64le.rpm
bind9.16-utils-debuginfo-9.16.23-0.9.el8.1.ppc64le.rpm

s390x:
bind9.16-debuginfo-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-debugsource-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-devel-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-dnssec-utils-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-libs-debuginfo-9.16.23-0.9.el8.1.s390x.rpm
bind9.16-utils-debuginfo-9.16.23-0.9.el8.1.s390x.rpm

x86_64:
bind9.16-debuginfo-9.16.23-0.9.el8.1.i686.rpm
bind9.16-debuginfo-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-debugsource-9.16.23-0.9.el8.1.i686.rpm
bind9.16-debugsource-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-devel-9.16.23-0.9.el8.1.i686.rpm
bind9.16-devel-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-dnssec-utils-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.9.el8.1.i686.rpm
bind9.16-dnssec-utils-debuginfo-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-libs-9.16.23-0.9.el8.1.i686.rpm
bind9.16-libs-debuginfo-9.16.23-0.9.el8.1.i686.rpm
bind9.16-libs-debuginfo-9.16.23-0.9.el8.1.x86_64.rpm
bind9.16-utils-debuginfo-9.16.23-0.9.el8.1.i686.rpm
bind9.16-utils-debuginfo-9.16.23-0.9.el8.1.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-2021-25220
https://access.redhat.com/security/cve/CVE-2022-0396
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.7_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 2022 Red Hat, Inc.
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