[SECURITY] Update module github.com/cert-manager/cert-manager to v1.15.4 #352
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This PR contains the following updates:
v1.14.5->v1.15.4GitHub Vulnerability Alerts
GHSA-r4pg-vg54-wxx4
Impact
cert-manager packages which call the standard library
pem.Decode()function can take a long time to process specially crafted invalid PEM data.If an attacker is able to modify PEM data which cert-manager reads (e.g. in a Secret resource), they may be able to use large amounts of CPU in the cert-manager controller pod to effectively create a denial-of-service (DoS) vector for cert-manager in the cluster.
Secrets are limited in size to 1MiB, which reduces the impact of this issue; it was discovered through an ~856kB fuzz test input which causes
pem.Decodeto take roughly 750ms to reject the input on an M2 Max Macbook Pro. By way of comparison, a valid PEM-encoded 4096-bit RSA key takes roughly 70µs to parse on the same machine.Given the required size of PEM data needed to present a realistic DoS vector, an attacker would need to create or insert many different large sized resources in the cluster, and so the best secondary defense is to ensure that sensible limits are placed via RBAC.
This issue affects all versions of cert-manager to have been released since at least v0.1.0 (since
pem.Decodeis core functionality for cert-manager). All supported releases are patched.Patches
The fixed versions are v1.16.2, v1.15.4 and v1.12.14.
Workarounds
Ensure that RBAC is scoped correctly in your cluster. If a user is able to modify resources containing PEM data to be able to exploit this, it's like that those permissions are a bigger security threat than this issue - especially for Secret resources.
References
Release Notes
cert-manager/cert-manager (github.com/cert-manager/cert-manager)
v1.15.4Compare Source
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.
In addition, since most PEM data parsed by cert-manager comes from
ConfigMaporSecretresources which havea max size limit of approximately 1MB, it's difficult to force cert-manager to parse large amounts of PEM data.
Further information will be published in a security advisory when all supported cert-manager releases have been patched.
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
Other (Cleanup or Flake)
v1.15.3Compare Source
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.
📜 Changes since
v1.15.2Bug or Regression
v1.15.2Compare Source
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.
📜 Changes since
v1.15.1Bug or Regression
route53: explicitly set theaws-globalSTS region which is now required by thegithub.com/aws/aws-sdk-go-v2library. (#7189,@cert-manager-bot)grpc-goto fixGHSA-xr7q-jx4m-x55m(#7167,@SgtCoDFish)@cert-manager-bot)endpointAdditionalPropertiesin thePodMonitortemplate of the Helm chart (#7191,@inteon)HTTPRouteresources (#7186,@cert-manager-bot)golangfrom1.22.3to1.22.5(#7165,@github-actions)v1.15.1Compare Source
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.
📜 Changes since v1.15.0
Bug or Regression
Other (Cleanup or Flake)
v1.15.0Compare Source
cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.
cert-manager 1.15 promotes several features to beta, including GatewayAPI support (
ExperimentalGatewayAPISupport), the ability to provide a subject in the Certificate that will be used literally in the CertificateSigningRequest (LiteralCertificateSubject) and the outputting of additional certificate formats (AdditionalCertificateOutputFormats).Community
Thanks again to all open-source contributors with commits in this release, including: @Pionerd, @SgtCoDFish, @ThatsMrTalbot, @andrey-dubnik, @bwaldrep, @eplightning, @erikgb, @findnature, @gplessis, @import-shiburin, @inteon, @jkroepke, @lunarwhite, @mangeshhambarde, @pwhitehead-splunk & @rodrigorfk, @wallrj.
Thanks also to the following cert-manager maintainers for their contributions during this release: @SgtCoDFish, @SpectralHiss, @ThatsMrTalbot, @hawksight, @inteon, @maelvls & @wallrj.
Equally thanks to everyone who provided feedback, helped users and raised issues on GitHub and Slack and joined our meetings!
Thanks also to the CNCF, which provides resources and support, and to the AWS open source team for being good community members and for their maintenance of the PrivateCA Issuer.
In addition, massive thanks to Venafi for contributing developer time and resources towards the continued maintenance of cert-manager projects.
Changes by Kind
Feature
--enable-gateway-apiflag to enable the integration. (#6961, @ThatsMrTalbot)For example:
cert-manager-certificaterequests-issuer-venafi/v1.15.0+(linux/amd64)+cert-manager/ef068a59008f6ed919b98a7177921ddc9e297200. (#6865, @wallrj)LiteralCertificateSubjectfeature to Beta. (#7030, @inteon)extraObjects; a list of yaml manifests which will helm will install and uninstall with the cert-manager manifests. (#6424, @gplessis)cert-manager.io/allow-direct-injectionin annotations (#6801, @jkroepke)Design
Bug or Regression
preferredChainis configured. (#6755, @import-shiburin)disableAutoApprovalandapproveSignerNamesHelm chart options. (#7054, @inteon)Other (Cleanup or Flake)
crds.keepandcrds.enabledHelm options can now be used instead of theinstallCRDsoption. (#6760, @inteon)slicesandk8s.io/apimachinery/pkg/utilpackages.Removed deprecated CSR functions which have been replaced with other functions in the
pkg/util/pkipackage. (#6730, @inteon)cmctlandkubectl cert-mangerhave been moved to the https://github.com/cert-manager/cmctl repo and will be versioned separately starting with cmctl v2.0.0 (#6663, @inteon)pkg/util/pki/ParseSubjectStringToRawDERBytesfunction. (#6994, @inteon)--controllersflag only specifies disabled controllers, the default controllers are now enabled implicitly. (#7054, @inteon)GO-2024-2824. (#6996, @github-actions[bot])v1.14.7Compare Source
cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.
📜 Changes since v1.14.6
Bugfixes
Other (Cleanup or Flake)
v1.14.6Compare Source
cert-manager is the easiest way to automatically manage certificates in Kubernetes and OpenShift clusters.
📜 Changes since v1.14.5
Other (Cleanup or Flake)
Configuration
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