access restriction bypass vulnerability
CVE: CVE-2020-26160
Component: jwt-go
CWE: CWE-284
Severity: Moderate
CVSS v3: 7.5/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Release date: 2020-09-15T00:00:00+00:00

A vulnerability was found in jwt-go where it is vulnerable to Access Restriction Bypass if m["aud"] happens to be []string{}, as allowed by the spec, the type assertion fails and the value of aud is "". This can cause audience verification to succeed even if the audiences being passed are incorrect if required is set to false.

Statement: The github.com/dgrijalva/jwt-go module is an indirect dependency of the k8s.io/client-go module pulled into Quay Bridge, and Setup operators via the Operator's SDK generated code. The k8s.io/client-go module does not use jwt-go in an unsafe way [1]. Red Hat Quay components have been marked as wontfix. This may be fixed in the future.

Similar to Quay, multiple OpenShift Container Platform (OCP) containers include jwt-go as a transient dependency due to go-autorest [1]. As such, those containers do not use jwt-go in an unsafe way. They have been marked wontfix at this time and may be fixed in a future update.

Same as Quay and OpenShift Container Platform, components shipped with Red Hat OpenShift Container Storage 4 do not use jwt-go in an unsafe way and hence this issue has been rated as having a security impact of Low. A future update may address this issue.

Red Hat Gluster Storage 3 shipped multi-cloud-object-gateway-cli as a technical preview and is not currently planned to be addressed in future updates, hence the multi-cloud-object-gateway-cli package will not be fixed.

[1] https://github.com/Azure/go-autorest/issues/568#issuecomment-703804062

Remediation:
Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258
See the documentation at:
https://access.redhat.com/documentation/en-us/openshift_container_platform/4.6/html/serverless_applications/index
Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258
Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258
For OpenShift Container Platform 4.7, see the following documentation, which
will be updated shortly for this release, for important instructions on how
to upgrade your cluster and fully apply this asynchronous errata update:

https://docs.openshift.com/container-platform/4.7/release_notes/ocp-4-7-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.7/updating/updating-cluster-cli.html.
For OpenShift Container Platform 4.8 see the following documentation, which
will be updated shortly for this release, for important instructions on how
to upgrade your cluster and fully apply this asynchronous errata update:

https://docs.openshift.com/container-platform/4.8/release_notes/ocp-4-8-release-notes.html

Details on how to access this content are available at
https://docs.openshift.com/container-platform/4.8/updating/updating-cluster-cli.html