HTTP Request Smuggling due to Transfer-Encoding whitespace mishandling
CVE: CVE-2020-7238
Component: netty
CWE: CWE-444
Severity: Important
CVSS v3: 7.5/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Release date: 2020-01-26T00:00:00+00:00

A flaw was found in Netty, where it mishandles Transfer-Encoding whitespace. This flaw allows HTTP Request Smuggling.

Statement: OpenShift Container Platform ships a vulnerable netty library as part of the logging-elasticsearch5 container. ElasticSearch's security team has stated that the previous vulnerability, CVE-2019-16869, does not poses a substantial practical threat to ElasticSearch 6 [1]. We agree that this issue would be difficult to exploit both these vulnerabilities on OpenShift Container Platform, so we're reducing the impact of this issue to moderate and may fix it in the future release.

Red Hat Satellite ships vulnerable netty version embedded in Candlepin, however, is not directly vulnerable since HTTP requests are handled by Tomcat and not netty.

[1]  https://github.com/elastic/elasticsearch/issues/49396

Remediation:
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 about how to apply this update, which includes the changes described in this advisory, see:

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

You must restart the JBoss server process for the update to take effect.

For details about how to apply this update, see:
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, ensure all previously released errata relevant to your system have been applied. Also, back up your existing installation, including all applications, configuration files, databases and database settings. 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, 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, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications.

You must restart the JBoss server process for the update to take effect.

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).
The Red Hat OpenShift Container Platform 3.11 and 4.1 container images provided by this update can be downloaded from the Red Hat Container Registry at registry.access.redhat.com. Installation instructions for your platform are available from https://access.redhat.com.

Dockerfiles and scripts should be amended either to refer to this new image specifically, or to the latest image generally.

Before applying this update, make sure all previously released errata relevant to your system have been applied.
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).
To install this update, do the following:

1. Download the Data Grid 7.3.6 server patch from the customer portal. See the download link in the References section.
2. Back up your existing Data Grid installation. You should back up databases, configuration files, and so on.
3. Install the Data Grid 7.3.6 server patch. Refer to the 7.3 Release Notes for patching instructions.
4. Restart Data Grid to ensure the changes take effect.
For on-premise installations, before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.

It is recommended to halt the server by stopping the JBoss Application Server process before installing this update; after installing the update, restart the server by starting the JBoss Application Server process.

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.

Installation instructions are available from the Fuse 7.7.0 product documentation page:
https://access.redhat.com/documentation/en-us/red_hat_fuse/7.7/
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).

You must restart the JBoss server process for the update to take effect.
For on-premise installations, before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.

It is recommended to halt the server by stopping the JBoss Application Server process before installing this update; after installing the update, restart the server by starting the JBoss Application Server process.

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.
* Use HTTP/2 instead (clear boundaries between requests)
* Disable reuse of backend connections eg. ```http-reuse never``` in HAProxy or whatever equivalent LB settings