CVE-2023-2728

2023-07-0321:15:09

Alpine Linux Development Team

security.alpinelinux.org

kubernetes

serviceaccount

ephemeralcontainers

mountablesecrets.

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

AI Score

6.7

Confidence

High

EPSS

0.001

Percentile

45.1%

JSON

Users may be able to launch containers that bypass the mountable secrets policy enforced by the ServiceAccount admission plugin when using ephemeral containers. The policy ensures pods running with a service account may only reference secrets specified in the service account’s secrets field. Kubernetes clusters are only affected if the ServiceAccount admission plugin and the kubernetes.io/enforce-mountable-secrets annotation are used together with ephemeral containers.

OSVersionArchitecturePackageVersionFilename
Alpineedge-communitynoarchk3s< 1.27.3.1-r0UNKNOWN
Alpine3.18-communitynoarchk3s< 1.27.3.1-r0UNKNOWN
Alpine3.19-communitynoarchk3s< 1.27.3.1-r0UNKNOWN
Alpine3.20-communitynoarchk3s< 1.27.3.1-r0UNKNOWN

OS	Version	Architecture	Package	Version	Filename
Alpine	edge-community	noarch	k3s	< 1.27.3.1-r0	UNKNOWN
Alpine	3.18-community	noarch	k3s	< 1.27.3.1-r0	UNKNOWN
Alpine	3.19-community	noarch	k3s	< 1.27.3.1-r0	UNKNOWN
Alpine	3.20-community	noarch	k3s	< 1.27.3.1-r0	UNKNOWN