Denial of Service via Improper Synchronization in QEMU NBD Server During Socket Closure
CVE: CVE-2024-7409
Component: QEMU
CWE: CWE-662
Severity: Moderate
CVSS v3: 7.5/CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Release date: 2024-08-02T11:05:09+00:00

A flaw was found in the QEMU NBD Server. This vulnerability allows a denial of service (DoS) attack via improper synchronization during socket closure when a client keeps a socket open as the server is taken offline.

Statement: This issue is classified as Moderate severity rather than Important because it primarily results in a denial of service condition rather than a more crucial impact such as data corruption, unauthorized access, or system compromise. The NULL pointer dereference occurs under specific conditions where the NBD server is stopped before nbd_blockdev_client_closed is called, which leads to a segmentation fault and crash of the QEMU process. However, this scenario is mitigated by the fact that it requires a particular sequence of events involving client connection handling and server shutdown. Additionally, proper network segmentation and the use of secure client connections can further reduce the likelihood of this issue being exploited.

Remediation:
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:d1ed95ba10801de2a7d2a7d8f6859816b019c49f9c3bd78b08f631ac18431e74

      (For s390x architecture)
      The image digest is sha256: 520e3222fc410884b77fd458bf20ce2d1cfbc0a3b33c1712b49d98633c1ecde8

      (For ppc64le architecture)
      The image digest is sha256:770b3e96984c3eca3ad2c3c3b91425233fd879609e978f32779a954cf7702aee

      (For aarch64 architecture)
      The image digest is sha256:57e29afafd634b078ea22f725f48e0e9eb838c333c8c906e74674aa556002deb

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 4.13 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 architecture. 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 as follows:

      (For x86_64 architecture)
      The image digest is sha256:bfe066b4b30eeb48f1099339131d56d4005f0867d4e4b3484e3fcfee39b3d26f

 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_a_cluster/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 as follows:

      (For x86_64 architecture)
      The image digest is sha256:f4c6252655cea21b790ab6bd8d88da9a657d787a365cedf79bcab8371eb11290

      (For s390x architecture)
      The image digest is sha256:b7a9b6bebff381cd86dd38747a43045fba0f2ff1903c87ac551d7cada723ebcb

      (For ppc64le architecture)
      The image digest is sha256:6823347a606e8ea4e08708bbc8ca3fefa60f3b2659d86478885b6f7405baf14b

      (For aarch64 architecture)
      The image digest is sha256:870cc14058a63d173f50f7a2f8d0140e48e6f283bc8521584f1e73002cc17d5f

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:f2e0c593f6ed81250c11d0bac94dbaf63656223477b7e8693a652f933056af6e

      (For s390x architecture)
      The image digest is sha256:357949b571429fc187fd9f80766ca730de2b8fe35b0bfd10a604958a1756c754

      (For ppc64le architecture)
      The image digest is sha256:e95ac38bd9f3189f2f4acaf19e10c10ad5f01ac9921e54b418410441ed927eb0

      (For aarch64 architecture)
      The image digest is sha256:4fb3b9374aa74dea5e568d584fc3f09220ffd9a70f4c39eb11d822a69d647220

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 4.15 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 as follows:

      (For x86_64 architecture)
      The image digest is sha256:bcc1b1803a49b9ac876a7dd950138439aacb81f070a64ae0a2f16e01594b7291

      (For s390x architecture)
      The image digest is sha256:a30a4b62995d123fd352ca1676847414e55c7728b23655435d5fce4227d6a486

      (For ppc64le architecture)
      The image digest is sha256:f8d27d42b75c58ae8bf89820ee089893fdeeebfe6b80dd0481994da9e9c6c7a0

      (For aarch64 architecture)
      The image digest is sha256:16f31d7b926ce2bdae0e4bf911fffb68d30b449870c99c6411c9ecc0648d7b91

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 as follows:

      (For x86_64 architecture)
      The image digest is sha256:6be262c95acd928771f39e50afc7f1a628d5e20a2ba8c9a83a176c8eff809c06

      (For s390x architecture)
      The image digest is sha256:d5fade25cc327a0f1b2174e9588ade616e4c240434e6a5e86088a2e5e9073431

      (For ppc64le architecture)
      The image digest is sha256:8404b9ab00ca563e234145c0c7ab8f23600ad768639c5d28b56efec709db95eb

      (For aarch64 architecture)
      The image digest is sha256:284e30f29de4ca6220aadc4a691045d61b324308e51e3d5ddaf71d82bce8e816

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
For OpenShift Container Platform 4.17 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/4.17/release_notes/ocp-4-17-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 as follows:

      (For x86_64 architecture)
      The image digest is sha256:e8680baf0b44dc55accfe08c4ad298d508d5a19a371bc4747c2f6a92225aa38f

      (For s390x architecture)
      The image digest is sha256:ac5f1baaef0447c5010ddb9ff416e481274d045ca1641f00fccef680265fa47d

      (For ppc64le architecture)
      The image digest is sha256:ded679380070f96330a9902eeccc9ee8b13f7b4588b6d0e7bf7bb1385bb568ab

      (For aarch64 architecture)
      The image digest is sha256:ca82f8a3d13fa2a43a920f8be072df56ea3c24312592dce189039e8800c329be

All OpenShift Container Platform 4.17 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/4.17/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.