RHSA-2020:0451MediumCVSS 7.5

Red Hat Security Advisory: OpenShift Container Platform 3.11 security update

Published
February 19, 2020
Last Modified
October 23, 2026

🔗 CVE IDs covered (1)

CVE-2016-2183 →

📋 Description

CVE-2016-2183 — SSL/TLS: Birthday attack against 64-bit block ciphers (SWEET32)

🎯 Affected products3

  • Red Hat OpenShift Container Platform 3.11
  • openshift3/oauth-proxy@sha256:876837ef69aa0e89497b1e22df4bfea76bf32cfa21a537d57dc5818a203e686e_ppc64le as a component of Red Hat OpenShift Container Platform 3.11
  • openshift3/oauth-proxy@sha256:da75a08e875f76a58028715f402da670f5849317f354ace0e64702acd86b21ae_amd64 as a component of Red Hat OpenShift Container Platform 3.11

✅ Remediation

Before applying this update, ensure all previously released errata relevant to your system is applied. See the following documentation, which will be updated shortly for release 3.11.170, 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. Workaround: 1.SSL/TLS configurations should prefer AES over DES. Versions of OpenSSL shipped with Red Hat Enterprise Linux 6 and 7 already do so. In the version of OpenSSL shipped with Red Hat Enterprise Linux 5, 3DES is listed below the AES-256 cipher and above the AES-128 cipher, therefore AES-256 based ciphersuite should not be disabled on the server. 2. Servers using OpenSSL, should not disable AES-128 and AES-256 ciphersuites. Versions of Apache shipped with Red Hat Enterprise Linux use the default cipher string, in which AES is preferred over DES/3DES based ciphersuites. For JBoss Middleware, and Java mitigations, please review this knowledge base article: https://access.redhat.com/articles/2598471 This can be mitigated on OpenShift Container Platform (OCP) by disabling the vulnerable TLS cipher suite in the applicable component. TLS configuration options for OCP are described here: https://access.redhat.com/articles/5348961

🔗 References (5)