VulnerabilityModified
CVE-2021-25735
A security issue was discovered in kube-apiserver that could allow node updates to bypass a Validating Admission Webhook.
MEDIUM 6.5EPSS 5.52%
Does this matter?
Lower severity and a low EPSS score (5.52%). Track it; it rarely justifies an emergency change on its own.
Description
A security issue was discovered in kube-apiserver that could allow node updates to bypass a Validating Admission Webhook. Clusters are only affected by this vulnerability if they run a Validating Admission Webhook for Nodes that denies admission based at least partially on the old state of the Node object. Validating Admission Webhook does not observe some previous fields.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
- EPSS
- 5.52% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-372
- Affected
- kubernetes/kubernetes
- Source
- jordan@liggitt.net
References
- https://github.com/kubernetes/kubernetes/issues/100096Patch, Third Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/FKAGqT4jx9YMailing List, Third Party Advisory
- https://github.com/kubernetes/kubernetes/issues/100096Patch, Third Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/FKAGqT4jx9YMailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.