CVE-2021-25737

low-risk
Published 2021-09-06

A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.

Do I need to act?

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0.38% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
2
CVSS 2.7/10 Low
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Kubernetes

References (6)

Patch https://github.com/kubernetes/kubernetes/issues/102106
Mailing List https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY
Third Party Advisory https://security.netapp.com/advisory/ntap-20211004-0004/
Patch https://github.com/kubernetes/kubernetes/issues/102106
Mailing List https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY
Third Party Advisory https://security.netapp.com/advisory/ntap-20211004-0004/
22
/ 100
low-risk
Severity 14/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 7/34 · Low