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

Synopsis: Moderate: bind security update
Advisory ID: RHSA-2020:5203-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:5203
Issue date: 2020-11-24
CVE Names: CVE-2020-8622 CVE-2020-8623 CVE-2020-8624
=====================================================================

1. Summary:

An update for bind is now available for Red Hat Enterprise Linux 7.7
Extended Update Support.

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 ComputeNode EUS (v. 7.7) – noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) – x86_64
Red Hat Enterprise Linux Server EUS (v. 7.7) – noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.7) – ppc64, 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: truncated TSIG response can lead to an assertion failure
(CVE-2020-8622)

* bind: remotely triggerable assertion failure in pk11.c (CVE-2020-8623)

* bind: incorrect enforcement of update-policy rules of type “subdomain”
(CVE-2020-8624)

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.

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

After installing the update, the BIND daemon (named) will be restarted
automatically.

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

1869473 – CVE-2020-8622 bind: truncated TSIG response can lead to an assertion failure
1869477 – CVE-2020-8623 bind: remotely triggerable assertion failure in pk11.c
1869480 – CVE-2020-8624 bind: incorrect enforcement of update-policy rules of type “subdomain”

6. Package List:

Red Hat Enterprise Linux ComputeNode EUS (v. 7.7):

Source:
bind-9.11.4-9.P2.el7_7.3.src.rpm

noarch:
bind-license-9.11.4-9.P2.el7_7.3.noarch.rpm

x86_64:
bind-debuginfo-9.11.4-9.P2.el7_7.3.i686.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-export-libs-9.11.4-9.P2.el7_7.3.i686.rpm
bind-export-libs-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-libs-9.11.4-9.P2.el7_7.3.i686.rpm
bind-libs-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-libs-lite-9.11.4-9.P2.el7_7.3.i686.rpm
bind-libs-lite-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-utils-9.11.4-9.P2.el7_7.3.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7):

x86_64:
bind-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-chroot-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.i686.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-devel-9.11.4-9.P2.el7_7.3.i686.rpm
bind-devel-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-export-devel-9.11.4-9.P2.el7_7.3.i686.rpm
bind-export-devel-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-lite-devel-9.11.4-9.P2.el7_7.3.i686.rpm
bind-lite-devel-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-pkcs11-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-pkcs11-devel-9.11.4-9.P2.el7_7.3.i686.rpm
bind-pkcs11-devel-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-pkcs11-libs-9.11.4-9.P2.el7_7.3.i686.rpm
bind-pkcs11-libs-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-pkcs11-utils-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-sdb-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-sdb-chroot-9.11.4-9.P2.el7_7.3.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 7.7):

Source:
bind-9.11.4-9.P2.el7_7.3.src.rpm

noarch:
bind-license-9.11.4-9.P2.el7_7.3.noarch.rpm

ppc64:
bind-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-chroot-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.ppc.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-export-libs-9.11.4-9.P2.el7_7.3.ppc.rpm
bind-export-libs-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-libs-9.11.4-9.P2.el7_7.3.ppc.rpm
bind-libs-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-libs-lite-9.11.4-9.P2.el7_7.3.ppc.rpm
bind-libs-lite-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-pkcs11-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-pkcs11-libs-9.11.4-9.P2.el7_7.3.ppc.rpm
bind-pkcs11-libs-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-pkcs11-utils-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-utils-9.11.4-9.P2.el7_7.3.ppc64.rpm

ppc64le:
bind-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-chroot-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-export-libs-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-libs-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-libs-lite-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-pkcs11-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-pkcs11-libs-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-pkcs11-utils-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-utils-9.11.4-9.P2.el7_7.3.ppc64le.rpm

s390x:
bind-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-chroot-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.s390.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-export-libs-9.11.4-9.P2.el7_7.3.s390.rpm
bind-export-libs-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-libs-9.11.4-9.P2.el7_7.3.s390.rpm
bind-libs-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-libs-lite-9.11.4-9.P2.el7_7.3.s390.rpm
bind-libs-lite-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-pkcs11-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-pkcs11-libs-9.11.4-9.P2.el7_7.3.s390.rpm
bind-pkcs11-libs-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-pkcs11-utils-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-utils-9.11.4-9.P2.el7_7.3.s390x.rpm

x86_64:
bind-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-chroot-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.i686.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-export-libs-9.11.4-9.P2.el7_7.3.i686.rpm
bind-export-libs-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-libs-9.11.4-9.P2.el7_7.3.i686.rpm
bind-libs-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-libs-lite-9.11.4-9.P2.el7_7.3.i686.rpm
bind-libs-lite-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-pkcs11-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-pkcs11-libs-9.11.4-9.P2.el7_7.3.i686.rpm
bind-pkcs11-libs-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-pkcs11-utils-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-utils-9.11.4-9.P2.el7_7.3.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 7.7):

ppc64:
bind-debuginfo-9.11.4-9.P2.el7_7.3.ppc.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-devel-9.11.4-9.P2.el7_7.3.ppc.rpm
bind-devel-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-export-devel-9.11.4-9.P2.el7_7.3.ppc.rpm
bind-export-devel-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-lite-devel-9.11.4-9.P2.el7_7.3.ppc.rpm
bind-lite-devel-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-pkcs11-devel-9.11.4-9.P2.el7_7.3.ppc.rpm
bind-pkcs11-devel-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-sdb-9.11.4-9.P2.el7_7.3.ppc64.rpm
bind-sdb-chroot-9.11.4-9.P2.el7_7.3.ppc64.rpm

ppc64le:
bind-debuginfo-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-devel-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-export-devel-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-lite-devel-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-pkcs11-devel-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-sdb-9.11.4-9.P2.el7_7.3.ppc64le.rpm
bind-sdb-chroot-9.11.4-9.P2.el7_7.3.ppc64le.rpm

s390x:
bind-debuginfo-9.11.4-9.P2.el7_7.3.s390.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-devel-9.11.4-9.P2.el7_7.3.s390.rpm
bind-devel-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-export-devel-9.11.4-9.P2.el7_7.3.s390.rpm
bind-export-devel-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-lite-devel-9.11.4-9.P2.el7_7.3.s390.rpm
bind-lite-devel-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-pkcs11-devel-9.11.4-9.P2.el7_7.3.s390.rpm
bind-pkcs11-devel-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-sdb-9.11.4-9.P2.el7_7.3.s390x.rpm
bind-sdb-chroot-9.11.4-9.P2.el7_7.3.s390x.rpm

x86_64:
bind-debuginfo-9.11.4-9.P2.el7_7.3.i686.rpm
bind-debuginfo-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-devel-9.11.4-9.P2.el7_7.3.i686.rpm
bind-devel-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-export-devel-9.11.4-9.P2.el7_7.3.i686.rpm
bind-export-devel-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-lite-devel-9.11.4-9.P2.el7_7.3.i686.rpm
bind-lite-devel-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-pkcs11-devel-9.11.4-9.P2.el7_7.3.i686.rpm
bind-pkcs11-devel-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-sdb-9.11.4-9.P2.el7_7.3.x86_64.rpm
bind-sdb-chroot-9.11.4-9.P2.el7_7.3.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-2020-8622
https://access.redhat.com/security/cve/CVE-2020-8623
https://access.redhat.com/security/cve/CVE-2020-8624
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2020 Red Hat, Inc.
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