CVE-2021-25735
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.
Related CPE's
References
CvssV3 impact
BaseSeverity | MEDIUM |
ConfidentialityImpact | NONE |
AttackComplexity | LOW |
Scope | UNCHANGED |
AttackVector | NETWORK |
AvailabilityImpact | HIGH |
IntegrityImpact | HIGH |
PrivilegesRequired | HIGH |
BaseScore | 6.5 |
VectorString | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H |
Version | 3.1 |
UserInteraction | NONE |
CvssV2 impact
AccessComplexity | LOW |
ConfidentialityImpact | NONE |
AvailabilityImpact | PARTIAL |
IntegrityImpact | PARTIAL |
BaseScore | 5.5 |
VectorString | AV:N/AC:L/Au:S/C:N/I:P/A:P |
Version | 2.0 |
AccessVector | NETWORK |
Authentication | SINGLE |