Request smuggling via content-length header
CVE: CVE-2021-21409
Component: netty
CWE: CWE-444
Severity: Moderate
CVSS v3: 5.8/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Release date: 2021-03-30T00:00:00+00:00

A flaw was found in Netty. There is an issue where the content-length header is not validated correctly if the request uses a single Http2HeaderFrame with the endstream set to true. This flaw leads to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1. The highest threat from this vulnerability is to integrity.

Statement: Red Hat Satellite ships a vulnerable Netty version embedded in Candlepin. However, it is not directly vulnerable since the HTTP requests are handled by Tomcat and not by Netty.
Red Hat OpenStack Platform's OpenDaylight will not be updated for this flaw because it was deprecated as of OpenStack Platform 14 and is only receiving security fixes for Important and Critical flaws.

In OpenShift Container Platform (OCP), the Hive/Presto/Hadoop components that comprise the OCP Metering stack, ship the vulnerable version of netty-codec-http package.
Since the release of OCP 4.6, the Metering product has been deprecated [1], hence the affected components are marked as wontfix.
This may be fixed in the future.

Remediation:
Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258
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
Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258
Before applying this update, ensure all previously released errata relevant to your system have been applied.

For details about how to apply this update, see:

https://access.redhat.com/articles/11258
For Red Hat Satellite 6.11 see the following documentation for the release.
https://access.redhat.com/documentation/en-us/red_hat_satellite/6.11

The important instructions on how to upgrade are available below.
https://access.redhat.com/documentation/en-us/red_hat_satellite/6.11/html/upgrading_and_updating_red_hat_satellite
Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258
Before applying this update, ensure all previously released errata relevant to your system have been applied.

For details about how to apply this update, see:

https://access.redhat.com/articles/11258
For OpenShift Container Platform 4.8 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 errata update:

https://docs.openshift.com/container-platform/4.8/release_notes/ocp-4-8-release-notes.html

For Red Hat OpenShift Logging 5.1, see the following instructions to apply this update:

https://docs.openshift.com/container-platform/4.8/logging/cluster-logging-upgrading.html
For OpenShift Container Platform 4.8 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 errata update:

https://docs.openshift.com/container-platform/4.8/release_notes/ocp-4-8-release-notes.html

For Red Hat OpenShift Logging 5.2, see the following instructions to apply this update:

https://docs.openshift.com/container-platform/4.7/logging/cluster-logging-upgrading.html
For OpenShift Container Platform 4.9 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 errata update:

https://docs.openshift.com/container-platform/4.9/release_notes/ocp-4-9-release-notes.html

For Red Hat OpenShift Logging 5.3, see the following instructions to apply this update:

https://docs.openshift.com/container-platform/4.9/logging/cluster-logging-upgrading.html
Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.

The References section of this erratum contains a download link (you must log in to download the update).

The JBoss server process must be restarted for the update to take effect.
Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.

The References section of this erratum contains a download link (you must log in to download the update).
Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.

The References section of this erratum contains a download link (you must log in to download the update).
Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.

The References section of this erratum contains a download link (you must log in to download the update).
Refer to the Data Grid 8.2 Upgrade Guide for instructions on upgrading to this version.

The References section of this erratum contains a download link (you must log in to download the update).
This advisory is informational only. There are no code changes associated with it. No action is required.
Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.

Installation instructions are available from the Fuse 7.10.0 product
documentation page:
https://access.redhat.com/documentation/en-us/red_hat_fuse/7.10/
Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.

The References section of this erratum contains a download link (you must log in to download the update).
Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.

The References section of this erratum contains a download link (you must log in to download the update).
Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.

The References section of this erratum contains a download link for the update. You must be logged in to download the update.
Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.

The References section of this erratum contains a download link for the update. You must be logged in to download the update.