SB2023110159 - Multiple vulnerabilities in Red Hat build of MicroShift
Published: November 1, 2023 Updated: September 6, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2023-1260)
The vulnerability allows a remote user to escalate privileges within the application.
The vulnerability exists due to improper access restrictions within kube-apiserver. A remote authenticated user with "update, patch" permissions to the "pods/ephemeralcontainers" subresource can bypass SCC admission restrictions and gain control over a privileged pod.
2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2023-2727)
The vulnerability allows a remote user to bypass implemented security restrictions.
The vulnerability exists due to improperly imposed security restrictions. A remote user can launch containers using images that are restricted by ImagePolicyWebhook when using ephemeral containers.
Kubernetes clusters are only affected if the ImagePolicyWebhook admission plugin is used together with ephemeral containers.
3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2023-2728)
The vulnerability allows a remote user to bypass implemented security restrictions.
The vulnerability exists due to improperly imposed security restrictions. A remote user can launch containers that bypass the mountable secrets policy enforced by the ServiceAccount admission plugin when using ephemeral containers.Kubernetes clusters are only affected if the ServiceAccount admission plugin and the kubernetes.io/enforce-mountable-secrets annotation are used together with ephemeral containers.
Remediation
Install update from vendor's website.