RHSA-2016:2064 - Security Advisory

Topic

An update for atomic-openshift is now available for Red Hat OpenShift
Container Platform 3.1, 3.2, and 3.3.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

Description

Red Hat OpenShift Container Platform is the company's cloud computing
Platform-as-a-Service (PaaS) solution designed for on-premise or private
cloud deployments.

Security Fix(es):

• It was found that Kubernetes did not correctly validate X.509 client

intermediate certificate host name fields. An attacker could use this flaw
to bypass authentication requirements by using a specially crafted X.509
certificate. (CVE-2016-7075)

This advisory contains the RPM packages for this release. See the following
advisory for the container images for this release:

https://access.redhat.com/errata/RHBA-2016:2065

All OpenShift Container Platform 3 users are advised to upgrade to these
updated images.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

To apply this update, see the following cluster upgrade documentation that
relates to your installed version of OpenShift Container Platform.

For OpenShift Container Platform 3.3:

https://docs.openshift.com/container-platform/3.3/install_config/upgrading/automated_upgrades.html#upgrading-to-ocp-3-3-asynchronous-releases

For OpenShift Container Platform 3.2:

https://docs.openshift.com/enterprise/3.2/install_config/upgrading/automated_upgrades.html#upgrading-to-openshift-enterprise-3-2-asynchronous-releases

For OpenShift Container Platform 3.1:

https://docs.openshift.com/enterprise/3.1/install_config/upgrading/automated_upgrades.html#upgrading-to-openshift-enterprise-3-1-asynchronous-releases

Affected Products

• Red Hat OpenShift Container Platform 3.3 x86_64
• Red Hat OpenShift Container Platform 3.1 x86_64

Fixes

• BZ - 1384112 - CVE-2016-7075 OpenShift 3: API server does not validate client-provided intermediate certificates correctly

CVEs

• CVE-2016-7075

References

• https://access.redhat.com/security/updates/classification/#important