CVE-2023-35165
CVE-2023-35165 · AWS CDK EKS overly permissive trust policies
This page contains facts from public vulnerability sources. Check the original advisory before updating.
AWS Cloud Development Kit (AWS CDK) is an open-source software development framework to define cloud infrastructure in code and provision it through AWS CloudFormation. In the packages `aws-cdk-lib` 2.0.0 until 2.80.0 and `@aws-cdk/aws-eks` 1.57.0 until 1.202.0, `eks.Cluster` and `eks.FargateCluster` constructs create two roles, `CreationRole` and `default MastersRole`, that have an overly permissive trust policy. The first, referred to as the `CreationRole`, is used by lambda handlers to create the cluster and deploy Kubernetes resources (e.g `KubernetesManifest`, `HelmChart`, ...) onto it. Users with CDK version higher or equal to 1.62.0 (including v2 users) may be affected. The second, referred to as the `default MastersRole`, is provisioned only if the `mastersRole` property isn't provided and has permissions to execute `kubectl` commands on the cluster. Users with CDK version higher or equal to 1.57.0 (including v2 users) may be affected. The issue has been fixed in `@aws-cdk/aws-eks` v1.202.0 and `aws-cdk-lib` v2.80.0. These versions no longer use the account root principal. Instead, they restrict the trust policy to the specific roles of lambda handlers that need it. There is no workaround available for CreationRole. To avoid creating the `default MastersRole`, use the `mastersRole` property to explicitly provide a role.
CVSS 6.6 · Medium · EPSS 0.9% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
aws-cdk
- Versions
- aws-cdk-lib >= 2.0.0, < 2.80.0: Affected
- @aws-cdk/aws-eks >= 1.57.0, < 1.202.0: Affected
No fix published
aws-cdk-lib npm
- Affected ranges
- SEMVER: ≥ 2.0.0, < 2.80.0
Update to 2.80.0
@aws-cdk/aws-eks npm
- Affected ranges
- SEMVER: ≥ 1.57.0, < 1.202.0
Update to 1.202.0