RHBA-2021:2520 - Bug Fix Advisory

Topic

Updated Red Hat OpenStack Platform 13.0 (Queens) container images are now available.

Description

The Red Hat OpenStack Platform 13.0 (Queens) container images have been updated to address the following security advisory: RHSA-2021:2456 (see References)

Users of Red Hat OpenStack Platform 13.0 (Queens) container images are advised to upgrade to these updated images, which contain backported patches to correct these security issues, fix these bugs and add these enhancements. Users of these images are also encouraged to rebuild all container images that depend on these images.

Changes to the vulnerability component:

• A vulnerability was found in openvswitch. A limitation in the implementation of userspace packet parsing can allow a malicious user to send a specially crafted packet causing the resulting megaflow in the kernel to be too wide, potentially causing a denial of service. The highest threat from this vulnerability is to system availability. (BZ#1908845)
• A flaw was found in multiple versions of Open vSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability. (BZ#1921438)

You can find images updated by this advisory in Red Hat Container Catalog (see References).

Solution

The Red Hat OpenStack Platform 13.0 (Queens) container images provided by this update can be downloaded from the Red Hat Container Registry at registry.access.redhat.com. Installation instructions for your platform are available at Red Hat Container Catalog (see References).

Dockerfiles and scripts should be amended either to refer to this new image specifically, or to the latest image generally.

Affected Products

• Red Hat OpenStack for IBM Power 13 ppc64le
• Red Hat OpenStack 13 x86_64

Fixes

• BZ - 1908845 - CVE-2020-35498 openvswitch: limitation in the OVS packet parsing in userspace leads to DoS
• BZ - 1921438 - CVE-2020-27827 lldp/openvswitch: denial of service via externally triggered memory leak
• BZ - 1972772 - [OSP13] Respin containers for 13z16 post-GA grades update

CVEs

(none)

References

• https://access.redhat.com/errata/RHSA-2021:2456
• https://access.redhat.com/containers