cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.
This patch release of cert-manager 1.15 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.
In addition, the version of Go used to build cert-manager 1.15 was updated along with the base images, and a Route53 bug fix was backported.
Changes by Kind
Bug or Regression
Bugfix: Prevent aggressive Route53 retries caused by STS authentication failures by removing the Amazon Request ID from STS errors. (#7261, @cert-manager-bot)
Set a maximum size for PEM inputs which cert-manager will accept to remove possibility of taking a long time to process an input (#7402, @SgtCoDFish)
BUGFIX: the dynamic certificate source used by the webhook TLS server failed to detect a root CA approaching expiration, due to a calculation error. This will cause the webhook TLS server to fail renewing its CA certificate. Please upgrade before the expiration of this CA certificate is reached. (#7232, @cert-manager-bot)
v1.15.2
cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.
🔗 See v1.15.0 for more information about cert-manager 1.15 and read-before-upgrade info.
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Bumps github.com/cert-manager/cert-manager from 1.13.2 to 1.15.4.
Release notes
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Commits
85dd399
Merge pull request #7424 from SgtCoDFish/release-1.15-bumps4554fab
[release-1.15] bump go + base images8d2bc2d
Merge pull request #7406 from SgtCoDFish/release-1.15-bumps6adb6df
Merge pull request #7402 from SgtCoDFish/release-1.15-pem-inputs97aae04
update go version, base images0792f09
security: remove calls to pem.Decode in non-test code7fc813f
security: Add functions to limit max PEM sizes allowablec84199d
Merge pull request #7371 from SgtCoDFish/release-1.15-ipv6-dns7cfce05
[release-1.15] add IPv6 example for recursive DNS arg3155085
Merge pull request #7305 from SgtCoDFish/release-1.15-moretestingDependabot 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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