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osvGoogleOSV:GHSA-QC2G-GMH6-95P4
HistoryJul 03, 2023 - 9:30 p.m.

kube-apiserver vulnerable to policy bypass

2023-07-0321:30:57
Google
osv.dev
9
kubernetes
kube-apiserver
vulnerability
imagepolicywebhook
ephemeral containers
policy bypass
clusters

6.5 Medium

CVSS3

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

0.001 Low

EPSS

Percentile

38.7%

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.

6.5 Medium

CVSS3

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

0.001 Low

EPSS

Percentile

38.7%