VULNERABILITY FIX: Previously, whenever kubeconfig did not define custom CA
(normal situation for production clusters with public domain and certificate!),
Config was returning ssl_options[:verify_ssl] hard-coded to VERIFY_NONE :-(
Assuming you passed those ssl_options to Kubeclient::Client, this means that
instead of checking server's certificate against your system CA store,
it would accept ANY certificate, allowing easy man-in-the middle attacks.
This is especially dangerous with user/password or token credentials
because MITM attacker could simply steal those credentials to the cluster
and do anything you could do on the cluster.
Config: fixed parsing of certificate-authority file containing concatenation of
several certificates. Previously, server's cert was checked against only first CA cert,
resulting in possible "certificate verify failed" errors.
An important use case is a chain of root & intermediate cert(s) - necessary when cluster's CA
itself is signed by another custom CA.
But also helps when you simply concatenate independent certs. (#461, #552)
Still broken (#460): inline certificate-authority-data is still parsed using add_cert
method that handles only one cert.
These don't affect code that supplies Client parameters directly,
only code that uses Config.
Commits
c27893f Merge pull request #558 from cben/release-4.9.3
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Bumps kubeclient from 4.9.2 to 4.9.3.
Changelog
Sourced from kubeclient's changelog.
Commits
c27893fMerge pull request #558 from cben/release-4.9.3d7bc03dBump kubeclient to 4.9.3109ea71Merge pull request #556 from cben/v4.y-security-config-ssl_verifye4cb727CHANGELOG and README about Config verify_ssl vulnerabilityaa36e89SECURITY: integration tests for Config+Client verify_ssl with real clusterc21e2b5SECURITY: unit tests for Kubeclient::Config handling of ssl_options[:verify_ssl]5086eb8Merge branch 'ancient-security-config-ssl_verify'f61a4e1Merge tag 'v4.6.0' into ancient-security-config-ssl_verify88483cfSECURITY: Kubeclient::Config: return ssl_options[:verify_ssl] correctlye05c715Merge pull request #552 from cben/v4.y-openssl-x509-store-add-fileDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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