Vulnerability Description
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.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kubernetes | Kubernetes | >= 1.16.0, < 1.18.19 |
Related Weaknesses (CWE)
References
- https://github.com/kubernetes/kubernetes/issues/102106PatchThird Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thYMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20211004-0004/Third Party Advisory
- https://github.com/kubernetes/kubernetes/issues/102106PatchThird Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thYMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20211004-0004/Third Party Advisory
FAQ
What is CVE-2021-25737?
CVE-2021-25737 is a vulnerability with a CVSS score of 2.7 (LOW). 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 l...
How severe is CVE-2021-25737?
CVE-2021-25737 has been rated LOW with a CVSS base score of 2.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-25737?
Check the references section above for vendor advisories and patch information. Affected products include: Kubernetes Kubernetes.