YAML parsing vulnerable to "Billion Laughs" attack, allowing for remote denial of service
CVE: CVE-2019-11253
Component: kubernetes
CWE: CWE-400
Severity: Important
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: 2019-09-28T00:00:00+00:00

A flaw was found kubernetes. The parsing of YAML manifests by the Kubernetes API server could lead to a denial-of-service attack leaving it vulnerable to an instance of a "billion laughs" attack. The highest threat from this vulnerability is to system availability.

Statement: For Red Hat OpenStack Platform, because kubernetes is not directly used in director-operator, the RHOSP Impact has been moved to Moderate.

Remediation:
For OpenShift Container Platform 3.10 see the following documentation,
which will be updated shortly for release 3.10.181, for important
instructions on how to upgrade your cluster and fully apply this
asynchronous errata update:

https://docs.openshift.com/container-platform/3.10/release_notes/ocp_3_10_release_notes.html
For OpenShift Container Platform 3.11, see the following documentation, which
will be updated shortly for release 3.11.154, 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
For OpenShift Container Platform 3.9 see the following documentation, which
will be updated shortly for release 3.9.102, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/3.9/release_notes/ocp_3_9_release_notes.html
For OpenShift Container Platform 4.1 see the following documentation, which
will be updated shortly for release 4.1.20, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.1/release_notes/ocp-4-1-release-notes.html
Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258
The OpenShift Service Mesh release notes provide information on the features and
known issues:

https://docs.openshift.com/container-platform/latest/service_mesh/servicemesh-release-notes.html
The OpenShift Service Mesh release notes provide information on the features and
known issues:

https://docs.openshift.com/container-platform/latest/service_mesh/servicemesh-release-notes.html
The OpenShift Service Mesh release notes provide information on the features and known issues:

https://docs.openshift.com/container-platform/latest/service_mesh/servicemesh-release-notes.html
The OpenShift Service Mesh release notes provide information on the features and
known issues:

https://docs.openshift.com/container-platform/latest/service_mesh/servicemesh-release-notes.html
The OpenShift Service Mesh release notes provide information on the features and
known issues:

https://docs.openshift.com/container-platform/latest/service_mesh/servicemesh-release-notes.html
The OpenShift Service Mesh release notes provide information on the features and
known issues:

https://docs.openshift.com/container-platform/latest/service_mesh/servicemesh-release-notes.html
OSP 16.2 Release - OSP Director Operator Containers tech preview