bind9: BIND's database will be slow if a very large number of RRs exist at the same nam
CVE: CVE-2024-1737
Component: bind
CWE: CWE-400
Severity: Important
CVSS v3: 7.5/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Release date: 2024-07-23T00:00:00+00:00

A flaw was found in the bind9 package, where a hostname with significant resource records may slow down bind's resolver cache and authoritative zone databases while these records are being added or updated. In addition, client queries for the related hostname may cause the same issue. This vulnerability may lead to a denial of service.

Statement: The identified flaw in the bind9 package represents a significant severity issue due to its potential to disrupt DNS resolution services. Specifically, a hostname with an extensive number of resource records can substantially degrade the performance of bind's resolver cache and authoritative zone databases. This degradation occurs during the addition or updating of these records, and is further exacerbated by client queries, which can lead to resource exhaustion. Consequently, the system may experience increased latency or complete unavailability of DNS services, resulting in a Denial of Service (DoS).

The DHCP package as shipped with Red Hat Enterprise 9 is not affected by this vulnerability. Although the DHCP binary ships bundled versions of bind libraries, the DHCP application uses its own routines to DDNS and configuration meaning the affected code is not reachable through it.

Remediation:
For OpenShift Container Platform 4.12 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:

      https://docs.openshift.com/container-platform/4.12/release_notes/ocp-4-12-release-notes.html

You may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.

      The sha values for the release are

      (For x86_64 architecture)
      The image digest is sha256:9814dcb2e5fd5def12b0103feef3a7651f30b65c4259a8c1864a2f0d5dc5b1c6

      (For s390x architecture)
      The image digest is sha256:040dae16155ee888e8b9a91f00dc6fede262d2b8024dc1df949f0dc2480f0976

All OpenShift Container Platform 4.12 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.12/updating/updating-cluster-cli.html
For OpenShift Container Platform 4.13 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:

      https://docs.openshift.com/container-platform/4.13/release_notes/ocp-4-13-release-notes.html

You may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.

      The sha values for the release are

      (For x86_64 architecture)
      The image digest is sha256:ab6f574665395d809511db9dc57764358278538eaae248c6d199208b3c30ab7d

      (For s390x architecture)
      The image digest is sha256:5d0769628b09763b170b7be275971144dd74034da83b3d8d42ac24dba7b603f3

      (For ppc64le architecture)
      The image digest is sha256:b32a1b7910754ca0babb0ee4c7099e0cd74ed35a05820a64472ebcebdbe57b8c

      (For aarch64 architecture)
      The image digest is sha256:4714b66b8fb0ceeca59fb6a696db81559002261bd4a03e7d55c5a3b766e96242

All OpenShift Container Platform 4.13 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.13/updating/updating-cluster-cli.html
For OpenShift Container Platform 4.14 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:

      https://docs.openshift.com/container-platform/4.14/release_notes/ocp-4-14-release-notes.html

You may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.

      The sha values for the release are

      (For x86_64 architecture)
      The image digest is sha256:4bc4925e8028158e3f313aa83e59e181c94d88b4aa82a3b00202d6f354e8dfed

      (For s390x architecture)
      The image digest is sha256:788a7a0fd2d808d1107d7ffc6731f799bdb8a41ac01ffab2afdbcb83b3390ffa

      (For ppc64le architecture)
      The image digest is sha256:f5c4474b162b3be7f693c51572d21dc5b1c8e14861049f2c426f4cce0a6bb4d8

      (For aarch64 architecture)
      The image digest is sha256:0bad0cf89c81b99f44e8db697ff63c8b1acf973dc57cf138eadfd7708844027e

All OpenShift Container Platform 4.14 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.14/updating/updating_a_cluster/updating-cluster-cli.html
For OpenShift Container Platform 4.15 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:

      https://docs.openshift.com/container-platform/4.15/release_notes/ocp-4-15-release-notes.html

You may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.

      The sha values for the release are

      (For x86_64 architecture)
      The image digest is sha256:29d88fadd452261fc8a0bbbb5d920a7fe5b8b7a0050f673a7c47059f03daef28

      (For s390x architecture)
      The image digest is sha256:59557a8caba9c7f7e1fe4b39545d1aa33d12ed9e6b4ff1f118b0ae16087ac577

      (For ppc64le architecture)
      The image digest is sha256:890a9bc6f7f9c65e6d98d677085228b462a00c096afd08082f4a7f56441679bc

      (For aarch64 architecture)
      The image digest is sha256:7dd6c863983390d4a975c7a01ce12eabbe1bed9fee07d36faa000e98f3cc9e73

All OpenShift Container Platform 4.15 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.15/updating/updating_a_cluster/updating-cluster-cli.html
For OpenShift Container Platform 4.16 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:

      https://docs.openshift.com/container-platform/4.16/release_notes/ocp-4-16-release-notes.html

You may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.

      The sha values for the release are

      (For x86_64 architecture)
      The image digest is sha256:793bac91943944692d72a61c47a3102edb70fb2948cdf54019f06376a87298ad

      (For s390x architecture)
      The image digest is sha256:925fb39b1c42a1b59aeb91cd3c12b4ca6f358459914809381fd6d7def577abdb

      (For ppc64le architecture)
      The image digest is sha256:a46a00e18fb14fe10a00bd87d579e0229b4aed46dd66b5f93d6e161164660d61

      (For aarch64 architecture)
      The image digest is sha256:9f20082482f4b82e3c39bfcd3eb7be7d0a1f5171cc22e6af42ae2df6ad1d74ad

All OpenShift Container Platform 4.16 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.16/updating/updating_a_cluster/updating-cluster-cli.html
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.