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| CVE | Published | CVSS | ShadowTrackr CVSS | Summary |
|---|---|---|---|---|
CVE: CVE-2020-8562 | Published 2022-02-01 | CVSS: 2.2 | ShadowTrackr CVSS: 1.2 | Summary: As mitigations to a report from 2019 and CVE-2020-8555, Kubernetes attempts to prevent proxied connections from accessing link-local or localhost networks when making user-driven connections to Services, Pods, Nodes, or StorageClass service providers. As part of this mitigation Kubernetes does a DNS name resolution check and validates that response IPs are not in the link-local (169.254.0.0/16) or localhost (127.0.0.0/8) range. Kubernetes then performs a second DNS resolution without validation for the actual connection. If a non-standard DNS server returns different non-cached responses, a user may be able to bypass the proxy IP restriction and access private networks on the control plane. |