Use of unbounded 'client' label in apiserver_request_total allows for memory exhaustion
CVE: CVE-2020-8552
Component: kubernetes
CWE: CWE-400
Severity: Moderate
CVSS v3: 4.5/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Release date: 2020-03-23T00:00:00+00:00

A denial of service vulnerability was found in the Kubernetes API server. This flaw allows a remote attacker to send repeated, crafted HTTP requests to exhaust available memory and cause a crash.


Remediation:
Before applying this update, ensure all previously released errata relevant
to your system is applied.

See the following documentation, which will be updated shortly for release
3.11.219, for important instructions on how to upgrade your cluster and fully
apply this asynchronous errata update:

https://docs.openshift.com/container-platform/3.11/release_notes/ocp_3_11_release_notes.html

This update is available via the Red Hat Network. Details on how to use the
Red Hat Network to apply this update are available at
https://access.redhat.com/articles/11258.
See the following documentation, which will be updated shortly for release
3.11.z, for important instructions on how to upgrade your cluster and fully
apply this asynchronous errata update:

https://docs.openshift.com/container-platform/3.11/release_notes/ocp_3_11_release_notes.html

This update is available via the Red Hat Network. Details on how to use the
Red Hat Network to apply this update are available at
https://access.redhat.com/articles/11258.
For OpenShift Container Platform 4.2 see the following documentation, which
will be updated shortly for release 4.2.29, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.2/release_notes/ocp-4-2-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.2/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.2 see the following documentation, which
will be updated shortly for release 4.2.29, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.2/release_notes/ocp-4-2-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.2/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.2 see the following documentation, which
will be updated shortly for release 4.2.34, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.2/release_notes/ocp-4-2-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.2/updating/updating-cluster-cli.html.
Before applying this update, ensure all previously released errata relevant
to your system have been applied.

For OpenShift Container Platform 4.3 see the following documentation, which
will be updated shortly for release 4.3.9, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.3/updating/updating-cluster-cli.html.
Before applying this update, ensure all previously released errata relevant
to your system have been applied.

For OpenShift Container Platform 4.3 see the following documentation, which
will be updated shortly for release 4.3.9, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.3/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.3 see the following documentation, which
will be updated shortly for release 4.3.9, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.3/updating/updating-cluster-cli.html.
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