Highlights
Auth Bypass: 15 prior fixes. Scrutinize any change in this area.
roles/etcd: most-fixed (4 issues). Treat as high-risk during review.
21 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Auth Bypass: Misconfigured Kubernetes API server arguments, such as reusing the main cluster CA for the front-proxy client instead of a dedicated certificate authority, allows unauthorized front-proxy administrative access. This is exacerbated by misconfigured client certificate identities.
Broken Access Control: Exposing the insecure API server port globally on wildcard interfaces allow unauthenticated local and remote privilege escalation without TLS protection or access control.
Incorrect Permission Assignment: Sensitive etcd PKI directories and private keys are historically created with overly loose permissions, allowing local users to steal the root database keys or write-access etcd certificates.