RHSA-2019:3811 - Security Advisory

Topic

An update for atomic-openshift is now available for Red Hat OpenShift
Container Platform 3.9.

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.

This advisory contains the atomic-openshift RPM package for Red Hat OpenShift Container Platform 3.9.102.

Security Fix(es):

• kubernetes: YAML parsing vulnerable to "Billion Laughs" attack, allowing for remote denial of service (CVE-2019-11253)
• atomic-openshift: OpenShift builds don't verify SSH Host Keys for the Git repository (CVE-2019-10150)
• kubernetes: Incomplete fixes for CVE-2019-1002101 and CVE-2019-11246, kubectl cp potential directory traversal (CVE-2019-11249)
• kubernetes: `kubectl cp` allows for arbitrary file write via double symlinks (CVE-2019-11251)

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

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

Affected Products

• Red Hat OpenShift Container Platform 3.9 x86_64

Fixes

• BZ - 1713433 - CVE-2019-10150 atomic-openshift: OpenShift builds don't verify SSH Host Keys for the git repository
• BZ - 1737651 - CVE-2019-11249 kubernetes: Incomplete fixes for CVE-2019-1002101 and CVE-2019-11246, kubectl cp potential directory traversal
• BZ - 1753495 - CVE-2019-11251 kubernetes: `kubectl cp` allows for arbitrary file write via double symlinks
• BZ - 1757701 - CVE-2019-11253 kubernetes: YAML parsing vulnerable to "Billion Laughs" attack, allowing for remote denial of service

CVEs

• CVE-2019-10150
• CVE-2019-11249
• CVE-2019-11251
• CVE-2019-11253

References

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