RHSA-2019:0408 - Security Advisory

Topic

An update is now available for Red Hat OpenShift Container Platform 3.4, 3.5, 3.6, and 3.7.

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 Red Hat's cloud computing
Kubernetes application platform solution designed for on-premise or private
cloud deployments.

Security Fix(es):

• A flaw was found in the way runc handled system file descriptors when running containers. A malicious container could use this flaw to overwrite contents of the runc binary and consequently run arbitrary commands on the container host system. (CVE-2019-5736)

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

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

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

See the following documentation for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update.

For OpenShift Container Platform 3.4:

https://docs.openshift.com/container-platform/3.4/release_notes/ocp_3_4_release_notes.html

For OpenShift Container Platform 3.5:

https://docs.openshift.com/container-platform/3.5/release_notes/ocp_3_5_release_notes.html

For OpenShift Container Platform 3.6:

https://docs.openshift.com/container-platform/3.6/release_notes/ocp_3_6_release_notes.html

For OpenShift Container Platform 3.7:

https://docs.openshift.com/container-platform/3.7/release_notes/ocp_3_7_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.

Affected Products

• Red Hat OpenShift Container Platform 3.7 x86_64
• Red Hat OpenShift Container Platform 3.6 x86_64
• Red Hat OpenShift Container Platform 3.5 x86_64
• Red Hat OpenShift Container Platform 3.4 x86_64

Fixes

• BZ - 1664908 - CVE-2019-5736 runc: Execution of malicious containers allows for container escape and access to host filesystem

CVEs

• CVE-2019-5736

References

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