CVE-2023-2727 Bypassing policies imposed by the ImagePolicyWebhook admission plugin

What is CVE-2023-2727?

CVE-2023-2727 is a medium-severity vulnerability in Kubernetes Kubernetes, published on 3 Jul 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Users may be able to 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.

Weakness: CWE-20

Which versions are affected by CVE-2023-2727?

9 open source packages ship an affected version, including k8s.io/kubernetes. It affects 1 product.

Products include Kubernetes Kubernetes.

How do I fix CVE-2023-2727?

Upgrade k8s.io/kubernetes to a fixed version for your release line: 1.24.15, 1.25.11, 1.26.6 or 1.27.3.

Is CVE-2023-2727 being exploited?

There is no known exploitation of CVE-2023-2727 in the wild and no public exploit code.

Other vulnerabilities in Kubernetes Kubernetes

• CVE-2018-1002105 Privilege Escalation in Kubernetes Critical 9.8
• CVE-2017-1000056 Kubernetes Privilege Escalation Critical 9.8
• CVE-2016-1906 Authorization bypass in Openshift Critical 9.8
• CVE-2023-3676 Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation High 8.8
• CVE-2023-3955 Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation High 8.8

All Kubernetes Kubernetes vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2023-2727, GHSA-qc2g-gmh6-95p4, GO-2023-1891, openSUSE-SU-2024:13004-1.