RHSA-2020:2479 - Security Advisory

Topic

An update for atomic-openshift is now available for Red Hat OpenShift Container Platform 3.11.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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

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

Security Fix(es):

• libseccomp-golang: mishandling of multiple argument rules leading to a bypass of intended access restrictions (CVE-2017-18367)
• kubernetes: Denial of service in API server via crafted YAML payloads by authorized users (CVE-2019-11254)
• kubernetes: Server side request forgery (SSRF) in kube-controller-manager allows users to leak secret information (CVE-2020-8555)

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

See the following documentation, which will be updated shortly for release
3.11.232, for important instructions on how to upgrade your cluster and fully
apply this asynchronous errata update:

https://docs.openshift.com/container-platform/3.11/release_notes/ocp_3_11_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 3.11 x86_64
• Red Hat OpenShift Container Platform for Power 3.11 ppc64le

Fixes

• BZ - 1706826 - CVE-2017-18367 libseccomp-golang: mishandling of multiple argument rules leading to a bypass of intended access restrictions
• BZ - 1819486 - CVE-2019-11254 kubernetes: Denial of service in API server via crafted YAML payloads by authorized users
• BZ - 1821583 - CVE-2020-8555 kubernetes: Server side request forgery (SSRF) in kube-controller-manager allows users to leak secret information

CVEs

• CVE-2017-18367
• CVE-2019-11254
• CVE-2020-8555

References

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