Use-after-free in GPGME bindings during container image pull
CVE: CVE-2020-8945
Component: proglottis/gpgme
CWE: CWE-416
Severity: Moderate
CVSS v3: 7.5/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Release date: 2020-01-16T00:00:00+00:00

A use-after-free vulnerability was found in the Go GPGME wrapper library, github.com/proglottis/gpgme. An attacker could use this flaw to crash or cause potential code execution in Go applications that use this library, under certain conditions, during GPG signature verification.

Statement: OpenShift 3.11 consumes updates for podman from the RHEL-7 extras channel, hence why it has been marked as wontfix in this instance.

After extensive testing of the mentioned vulnerability Red Hat has chosen a severity of Moderate instead of High, because the deallocation of GPGME objects while other parts of code are still using it, the vulnerability can only result in a crash and cannot be used to execute code in any feasible manner, moreover the vulnerability only results in crash if finalizers are called to clean up variables while objects are still being used by the underlying C code. Given the inherent attack complexity being high and the exploitability of the vulnerability limited to a crash, Moderate severity seems adequate.

Remediation:
See the following documentation, which will be updated shortly for release
3.11.z, 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.
For OpenShift Container Platform 4.2 see the following documentation, which
will be updated shortly for release 4.2.28, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.2/release_notes/ocp-4-2-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.2/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.2 see the following documentation, which
will be updated shortly for release 4.2.z, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.2/release_notes/ocp-4-2-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.2/updating/updating-cluster-cli.html.
Before applying this update, ensure all previously released errata relevant
to your system have been applied.

For OpenShift Container Platform 4.3 see the following documentation, which
will be updated shortly for release 4.3.10, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.3/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.3 see the following documentation, which
will be updated shortly for release 4.3.8, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.3/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.3 see the following documentation, which
will be updated shortly for release 4.3.8, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.3/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.3 see the following documentation, which
will be updated shortly for release 4.3.9, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.3/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.4 see the following documentation, which
will be updated shortly for release 4.4.3, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.4/release_notes/ocp-4-4-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.4/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.4 see the following documentation, which
will be updated shortly for release 4.4.3, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.4/release_notes/ocp-4-4-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.4/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.1 see the following documentation, which
will be updated shortly for release 4.1.38, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.1/release_notes/ocp-4-1-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.1/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.2 see the following documentation, which
will be updated shortly for release 4.2.22, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.2/release_notes/ocp-4-2-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.2/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.2 see the following documentation, which
will be updated shortly for release 4.2.33, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.2/release_notes/ocp-4-2-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.2/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.3 see the following documentation, which
will be updated shortly for release 4.3.5, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.3/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.3 see the following documentation, which
will be updated shortly for release 4.3.12, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.3/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.4 see the following documentation, which
will be updated shortly for release 4.4.13, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.4/release_notes/ocp-4-4-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.4/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.5 see the following documentation, which
will be updated shortly for release 4.5.1, for important instructions on
how to upgrade your cluster and fully apply this asynchronous errata
update:

https://docs.openshift.com/container-platform/4.5/release_notes/ocp-4-5-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.5/updating/updating-cluster-cli.html.