cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.
This patch release of cert-manager 1.16 makes several changes to how PEM input is validated, adding maximum sizes appropriate to the type of PEM data which is being parsed.
This is to prevent an unacceptable slow-down in parsing specially crafted PEM data. The issue was found by Google's OSS-Fuzz project.
The issue is low severity; to exploit the PEM issue would require privileged access which would likely allow Denial-of-Service through other methods.
Note also that since most PEM data parsed by cert-manager comes from ConfigMap or Secret resources which have a max size limit of approximately 1MB, it's difficult to force cert-manager to parse large amounts of PEM data.
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Bumps github.com/cert-manager/cert-manager from 1.16.1 to 1.16.2.
Release notes
Sourced from github.com/cert-manager/cert-manager's releases.
Commits
33df0f2
Merge pull request #7431 from SgtCoDFish/release-1.16-bumps03f9832
[release-1.16] bump go + base images5001e8b
Merge pull request #7401 from SgtCoDFish/release-1.16-pem-inputs3ba1f2c
[release-1.16] bump base imagesd99dddb
security: remove calls to pem.Decode in non-test code481b67b
security: Add functions to limit max PEM sizes allowable24f59c3
Merge pull request #7370 from SgtCoDFish/release-1.16-ipv6-dnsa9785d4
[release-1.16] add IPv6 example for recursive DNS argDependabot 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
@dependabot rebase
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