Permissions, Privileges, and Access Controls in apiserver - CVE-2023-2727
Published: June 19, 2023
Vulnerability identifier: #VU77525
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-2727
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Kubernetes
Affected software:
apiserver
apiserver
Detailed vulnerability description
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.
How to mitigate CVE-2023-2727
Install updates from vendor's website.