Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2024.2310
bind and bind-dyndb-ldap security updates
16 April 2024
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AusCERT Security Bulletin Summary
---------------------------------
Product: bind and bind-dyndb-ldap
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2023-4408 CVE-2023-6516 CVE-2023-50868
CVE-2023-50387 CVE-2023-5679 CVE-2023-5517
Original Bulletin:
https://access.redhat.com/errata/RHSA-2024:1803
Comment: CVSS (Max): 7.5 CVE-2023-6516 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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Red Hat Security Advisory
Synopsis: Important: bind and bind-dyndb-ldap security
updates
Advisory ID: RHSA-2024:1803
Product: Red Hat CodeReady Linux Builder EUS (v.9.2)
Advisory URL: https://access.redhat.com/errata/RHSA-2024:1803
Issue date: 2024-04-15
CVE Names: CVE-2023-4408 CVE-2023-5517 CVE-2023-5679 CVE-2023-6516
CVE-2023-50387 CVE-2023-50868
=====================================================================
1. Summary:
Updates for bind and bind-dyndb-ldap are now available for Red Hat Enterprise
Linux 9.2 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of
Important. 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 EUS (v.9.2) - aarch64, ppc64le, i686, x86_64,
s390x, noarch
Red Hat Enterprise Linux AppStream EUS (v.9.2) - aarch64, ppc64le, i686, x86_64,
s390x, noarch
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.
Bind-dyndb-ldap provides an LDAP back-end plug-in for BIND. It features support
for dynamic updates and internal caching, to lift the load off of your LDAP
server.
Security Fix(es):
* bind9: Parsing large DNS messages may cause excessive CPU load (CVE-2023-4408)
* bind9: Querying RFC 1918 reverse zones may cause an assertion failure when
"nxdomain-redirect" is enabled (CVE-2023-5517)
* bind9: Enabling both DNS64 and serve-stale may cause an assertion failure
during recursive resolution (CVE-2023-5679)
* bind9: Specific recursive query patterns may lead to an out-of-memory
condition (CVE-2023-6516)
* bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator (CVE-2023-50387)
* bind9: Preparing an NSEC3 closest encloser proof can exhaust CPU resources
(CVE-2023-50868)
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/):
2263896 - CVE-2023-4408 - bind9: Parsing large DNS messages may cause excessive
CPU load
2263897 - CVE-2023-5517 - bind9: Querying RFC 1918 reverse zones may cause an
assertion failure when "nxdomain-redirect" is enabled
2263909 - CVE-2023-5679 - bind9: Enabling both DNS64 and serve-stale may cause
an assertion failure during recursive resolution
2263911 - CVE-2023-6516 - bind9: Specific recursive query patterns may lead to
an out-of-memory condition
2263914 - CVE-2023-50387 - bind9: KeyTrap - Extreme CPU consumption in DNSSEC
validator
2263917 - CVE-2023-50868 - bind9: Preparing an NSEC3 closest encloser proof can
exhaust CPU resources
6. Package List:
Red Hat CodeReady Linux Builder EUS (v.9.2)
aarch64:
bind-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-chroot-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-debuginfo-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-debugsource-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-devel-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-dnssec-utils-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-dnssec-utils-debuginfo-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-libs-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-libs-debuginfo-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-utils-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-utils-debuginfo-32:9.16.23-11.el9_2.4.aarch64.rpm
ppc64le:
bind-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-chroot-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-debuginfo-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-debugsource-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-devel-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-dnssec-utils-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-dnssec-utils-debuginfo-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-libs-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-libs-debuginfo-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-utils-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-utils-debuginfo-32:9.16.23-11.el9_2.4.ppc64le.rpm
s390x:
bind-32:9.16.23-11.el9_2.4.s390x.rpm
bind-chroot-32:9.16.23-11.el9_2.4.s390x.rpm
bind-debuginfo-32:9.16.23-11.el9_2.4.s390x.rpm
bind-debugsource-32:9.16.23-11.el9_2.4.s390x.rpm
bind-devel-32:9.16.23-11.el9_2.4.s390x.rpm
bind-dnssec-utils-32:9.16.23-11.el9_2.4.s390x.rpm
bind-dnssec-utils-debuginfo-32:9.16.23-11.el9_2.4.s390x.rpm
bind-libs-32:9.16.23-11.el9_2.4.s390x.rpm
bind-libs-debuginfo-32:9.16.23-11.el9_2.4.s390x.rpm
bind-utils-32:9.16.23-11.el9_2.4.s390x.rpm
bind-utils-debuginfo-32:9.16.23-11.el9_2.4.s390x.rpm
Source:
bind-32:9.16.23-11.el9_2.4.src.rpm
x86_64:
bind-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-chroot-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-debuginfo-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-debugsource-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-devel-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-dnssec-utils-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-dnssec-utils-debuginfo-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-libs-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-libs-debuginfo-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-utils-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-utils-debuginfo-32:9.16.23-11.el9_2.4.x86_64.rpm
i686:
bind-debuginfo-32:9.16.23-11.el9_2.4.i686.rpm
bind-debugsource-32:9.16.23-11.el9_2.4.i686.rpm
bind-devel-32:9.16.23-11.el9_2.4.i686.rpm
bind-dnssec-utils-debuginfo-32:9.16.23-11.el9_2.4.i686.rpm
bind-libs-32:9.16.23-11.el9_2.4.i686.rpm
bind-libs-debuginfo-32:9.16.23-11.el9_2.4.i686.rpm
bind-utils-debuginfo-32:9.16.23-11.el9_2.4.i686.rpm
noarch:
bind-dnssec-doc-32:9.16.23-11.el9_2.4.noarch.rpm
bind-doc-32:9.16.23-11.el9_2.4.noarch.rpm
bind-license-32:9.16.23-11.el9_2.4.noarch.rpm
python3-bind-32:9.16.23-11.el9_2.4.noarch.rpm
Red Hat Enterprise Linux AppStream EUS (v.9.2)
aarch64:
bind-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-chroot-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-debuginfo-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-debugsource-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-devel-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-dnssec-utils-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-dnssec-utils-debuginfo-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-dyndb-ldap-0:11.9-8.el9_2.2.aarch64.rpm
bind-dyndb-ldap-debuginfo-0:11.9-8.el9_2.2.aarch64.rpm
bind-dyndb-ldap-debugsource-0:11.9-8.el9_2.2.aarch64.rpm
bind-libs-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-libs-debuginfo-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-utils-32:9.16.23-11.el9_2.4.aarch64.rpm
bind-utils-debuginfo-32:9.16.23-11.el9_2.4.aarch64.rpm
ppc64le:
bind-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-chroot-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-debuginfo-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-debugsource-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-devel-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-dnssec-utils-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-dnssec-utils-debuginfo-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-dyndb-ldap-0:11.9-8.el9_2.2.ppc64le.rpm
bind-dyndb-ldap-debuginfo-0:11.9-8.el9_2.2.ppc64le.rpm
bind-dyndb-ldap-debugsource-0:11.9-8.el9_2.2.ppc64le.rpm
bind-libs-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-libs-debuginfo-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-utils-32:9.16.23-11.el9_2.4.ppc64le.rpm
bind-utils-debuginfo-32:9.16.23-11.el9_2.4.ppc64le.rpm
s390x:
bind-32:9.16.23-11.el9_2.4.s390x.rpm
bind-chroot-32:9.16.23-11.el9_2.4.s390x.rpm
bind-debuginfo-32:9.16.23-11.el9_2.4.s390x.rpm
bind-debugsource-32:9.16.23-11.el9_2.4.s390x.rpm
bind-devel-32:9.16.23-11.el9_2.4.s390x.rpm
bind-dnssec-utils-32:9.16.23-11.el9_2.4.s390x.rpm
bind-dnssec-utils-debuginfo-32:9.16.23-11.el9_2.4.s390x.rpm
bind-dyndb-ldap-0:11.9-8.el9_2.2.s390x.rpm
bind-dyndb-ldap-debuginfo-0:11.9-8.el9_2.2.s390x.rpm
bind-dyndb-ldap-debugsource-0:11.9-8.el9_2.2.s390x.rpm
bind-libs-32:9.16.23-11.el9_2.4.s390x.rpm
bind-libs-debuginfo-32:9.16.23-11.el9_2.4.s390x.rpm
bind-utils-32:9.16.23-11.el9_2.4.s390x.rpm
bind-utils-debuginfo-32:9.16.23-11.el9_2.4.s390x.rpm
Source:
bind-32:9.16.23-11.el9_2.4.src.rpm
bind-dyndb-ldap-0:11.9-8.el9_2.2.src.rpm
x86_64:
bind-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-chroot-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-debuginfo-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-debugsource-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-devel-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-dnssec-utils-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-dnssec-utils-debuginfo-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-dyndb-ldap-0:11.9-8.el9_2.2.x86_64.rpm
bind-dyndb-ldap-debuginfo-0:11.9-8.el9_2.2.x86_64.rpm
bind-dyndb-ldap-debugsource-0:11.9-8.el9_2.2.x86_64.rpm
bind-libs-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-libs-debuginfo-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-utils-32:9.16.23-11.el9_2.4.x86_64.rpm
bind-utils-debuginfo-32:9.16.23-11.el9_2.4.x86_64.rpm
i686:
bind-debuginfo-32:9.16.23-11.el9_2.4.i686.rpm
bind-debugsource-32:9.16.23-11.el9_2.4.i686.rpm
bind-devel-32:9.16.23-11.el9_2.4.i686.rpm
bind-dnssec-utils-debuginfo-32:9.16.23-11.el9_2.4.i686.rpm
bind-libs-32:9.16.23-11.el9_2.4.i686.rpm
bind-libs-debuginfo-32:9.16.23-11.el9_2.4.i686.rpm
bind-utils-debuginfo-32:9.16.23-11.el9_2.4.i686.rpm
noarch:
bind-dnssec-doc-32:9.16.23-11.el9_2.4.noarch.rpm
bind-doc-32:9.16.23-11.el9_2.4.noarch.rpm
bind-license-32:9.16.23-11.el9_2.4.noarch.rpm
python3-bind-32:9.16.23-11.el9_2.4.noarch.rpm
7. References:
https://access.redhat.com/security/cve/CVE-2023-4408
https://access.redhat.com/security/cve/CVE-2023-5517
https://access.redhat.com/security/cve/CVE-2023-5679
https://access.redhat.com/security/cve/CVE-2023-6516
https://access.redhat.com/security/cve/CVE-2023-50387
https://access.redhat.com/security/cve/CVE-2023-50868
https://access.redhat.com/security/updates/classification/#important
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