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Add cozystack-cluster-admin #517

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merged 4 commits into from
Dec 9, 2024
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@klinch0 klinch0 commented Dec 6, 2024

Summary by CodeRabbit

  • New Features

    • Introduced new Secret resources for k8s-client, kubeapps-client, and kubeapps-auth-config to enhance Keycloak configuration.
    • Added a new KeycloakRealmGroup named cozystack-cluster-admin for improved access management.
    • Implemented a new RoleBinding for kubeapps-admin in the cozy-public namespace, linking it to the kubeapps-admin role.
    • Created a new ClusterRoleBinding named cozystack-cluster-admin-group, providing cluster-level permissions.
    • Added new ClusterRole named kubeapps-admin, granting specific permissions for resource management.
    • Defined a new ClusterRole named cozystack-cluster-admin with unrestricted access to all resources.
  • Bug Fixes

    • None
  • Documentation

    • None
  • Refactor

    • None
  • Style

    • None
  • Tests

    • None
  • Chores

    • None
  • Revert

    • None

@klinch0 klinch0 requested a review from kvaps as a code owner December 6, 2024 10:43
@dosubot dosubot bot added the size:M This PR changes 30-99 lines, ignoring generated files. label Dec 6, 2024
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coderabbitai bot commented Dec 6, 2024

Caution

Review failed

The pull request is closed.

Walkthrough

The changes involve the addition of new Kubernetes resources in the Keycloak configuration files, specifically configure-kk.yaml, rolebinding.yaml, and roles.yaml. New Secret resources for client configurations are introduced, along with a new KeycloakRealmGroup and a modified ClusterRoleBinding for cluster-level permissions. New roles are defined, granting extensive permissions across the cluster. These modifications enhance the existing Keycloak setup without altering the existing logic.

Changes

File Path Change Summary
packages/system/keycloak-configure/templates/configure-kk.yaml Added three new Secret resources: k8s-client, kubeapps-client, kubeapps-auth-config. Added a new KeycloakRealmGroup: cozystack-cluster-admin.
packages/system/keycloak-configure/templates/rolebinding.yaml Modified ClusterRoleBinding: kubeapps-admin-group role reference changed to kubeapps-admin. Added new RoleBinding: kubeapps-admin in cozy-public. Added new ClusterRoleBinding: cozystack-cluster-admin-group.
packages/system/keycloak-configure/templates/roles.yaml Introduced two new ClusterRole: kubeapps-admin and cozystack-cluster-admin, with specified permissions.

Possibly related PRs

  • fix keycloak-configure secrets drift #506: This PR enhances the management of Kubernetes secrets and the configuration of Keycloak clients, directly related to the new Secret resources added in the main PR for k8s-client, kubeapps-client, and kubeapps-auth-config.
  • Add cozystack-cluster-admin #517: This PR adds the cozystack-cluster-admin KeycloakRealmGroup, which is directly related to the new KeycloakRealmGroup introduced in the main PR.

Suggested reviewers

  • kvaps

🐰 In the land of code where secrets grow,
New roles and bindings begin to flow.
Keycloak's realm expands with glee,
Cluster admins, come join me!
With every change, our setup's bright,
Hopping forward, all feels right! 🌟


📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between cfdff1b and 731fb0d.

📒 Files selected for processing (2)
  • packages/system/keycloak-configure/templates/configure-kk.yaml (1 hunks)
  • packages/system/keycloak-configure/templates/rolebinding.yaml (1 hunks)

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@dosubot dosubot bot added the enhancement New feature or request label Dec 6, 2024
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Actionable comments posted: 3

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between d14b66c and 706e472.

📒 Files selected for processing (3)
  • packages/system/keycloak-configure/templates/configure-kk.yaml (1 hunks)
  • packages/system/keycloak-configure/templates/rolebinding.yaml (1 hunks)
  • packages/system/keycloak-configure/templates/roles.yaml (1 hunks)
🧰 Additional context used
🪛 checkov (3.2.312)
packages/system/keycloak-configure/templates/roles.yaml

[HIGH] 1-15: Minimize ClusterRoles that grant permissions to approve CertificateSigningRequests

(CKV_K8S_156)


[HIGH] 1-15: Minimize ClusterRoles that grant control over validating or mutating admission webhook configurations

(CKV_K8S_155)

🔇 Additional comments (1)
packages/system/keycloak-configure/templates/rolebinding.yaml (1)

17-29: Verify group membership management

The binding grants cluster-wide admin access to the 'cozystack-cluster-admin' group. Ensure:

  1. Group membership is strictly controlled in Keycloak
  2. Access review procedures are in place
  3. Group membership is regularly audited

Let's check for similar admin group bindings:

✅ Verification successful

Let me gather more information about the Keycloak configuration to understand how group membership is managed.


Let me check for any specific configurations related to the cluster-admin group and its management.


Based on the gathered information, I can now provide a final response:

Cluster admin group access is properly managed through Keycloak

The cozystack-cluster-admin group is properly configured with the following security controls in place:

  • Managed through KeycloakRealmGroup CRD in the cozy-dashboard namespace
  • Integrated with a dedicated Keycloak realm (keycloakrealm-cozy)
  • Access is controlled via Keycloak's built-in group membership management
  • Group membership changes are audited through Keycloak's realm event configuration
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for other cluster-admin bindings
rg --type yaml "kind:\s*ClusterRoleBinding" -A 10 | grep -A 5 "name:\s*.*admin"

Length of output: 2885


Script:

#!/bin/bash
# Search for Keycloak group configurations and mappings
rg --type yaml -g "keycloak*" "group|realm" -B 2 -A 2

# Also check for any documentation about group management
fd README -e md -x cat {} \; | rg -i "keycloak.*group|group.*keycloak"

Length of output: 19172


Script:

#!/bin/bash
# Search for cozystack-cluster-admin group configurations
rg -g "*.yaml" "cozystack-cluster-admin" -B 3 -A 3

# Look for any role definitions related to cluster admin
rg -g "*.yaml" "kind:\s*ClusterRole.*name:\s*cozystack-cluster-admin" -A 10

Length of output: 2662

Comment on lines 19 to 21
metadata:
name: cozystack-cluster-admin-group
namespace: cozy-dashboard
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🛠️ Refactor suggestion

Remove unnecessary namespace field

ClusterRoleBinding is cluster-scoped, so the namespace field has no effect and should be removed.

 metadata:
   name: cozystack-cluster-admin-group
-  namespace: cozy-dashboard
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
metadata:
name: cozystack-cluster-admin-group
namespace: cozy-dashboard
metadata:
name: cozystack-cluster-admin-group

@klinch0 klinch0 marked this pull request as draft December 6, 2024 11:30
@klinch0 klinch0 force-pushed the feature/add-cluster-role branch from 3932476 to cfdff1b Compare December 6, 2024 12:31
@klinch0 klinch0 marked this pull request as ready for review December 6, 2024 12:54
@dosubot dosubot bot added size:L This PR changes 100-499 lines, ignoring generated files. and removed size:M This PR changes 30-99 lines, ignoring generated files. labels Dec 6, 2024
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Actionable comments posted: 2

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 706e472 and cfdff1b.

📒 Files selected for processing (2)
  • packages/system/keycloak-configure/templates/rolebinding.yaml (1 hunks)
  • packages/system/keycloak-configure/templates/roles.yaml (1 hunks)
🧰 Additional context used
🪛 checkov (3.2.312)
packages/system/keycloak-configure/templates/roles.yaml

[HIGH] 43-57: Minimize ClusterRoles that grant permissions to approve CertificateSigningRequests

(CKV_K8S_156)


[HIGH] 43-57: Minimize ClusterRoles that grant control over validating or mutating admission webhook configurations

(CKV_K8S_155)

🔇 Additional comments (6)
packages/system/keycloak-configure/templates/rolebinding.yaml (4)

Line range hint 4-5: Remove unnecessary namespace field

ClusterRoleBinding is cluster-scoped, so the namespace field has no effect and should be removed.


35-37: Remove unnecessary namespace field

ClusterRoleBinding is cluster-scoped, so the namespace field has no effect and should be removed.


9-13: Verify the kubeapps-admin ClusterRole exists

The roleRef has been changed from "admin" to "kubeapps-admin". Let's verify this role exists and has appropriate permissions.

✅ Verification successful

Let me check the content of the roles.yaml file to verify the ClusterRole definition and its permissions.


The kubeapps-admin ClusterRole exists with appropriate permissions

The ClusterRole kubeapps-admin is properly defined in roles.yaml with necessary permissions:

  • Full access to apps.cozystack.io resources
  • Full access to Helm releases
  • Read access to core Kubernetes resources
  • Additional Role in cozy-public namespace for Helm repository management
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the existence and permissions of kubeapps-admin ClusterRole

# Search for the kubeapps-admin ClusterRole definition
rg -l "kind: ClusterRole.*name: kubeapps-admin" --type yaml

# Look for any references to this role
rg "name: kubeapps-admin" --type yaml

Length of output: 947


Script:

#!/bin/bash
# Get the content of roles.yaml to check the ClusterRole definition
cat packages/system/keycloak-configure/templates/roles.yaml

Length of output: 939


17-29: Verify the kubeapps-admin Role exists in cozy-public namespace

The RoleBinding references a Role named "kubeapps-admin" in the cozy-public namespace. Let's verify this role exists with appropriate permissions.

✅ Verification successful

Role exists and is properly configured

The kubeapps-admin Role exists in the cozy-public namespace with appropriate permissions for HelmRepositories and HelmCharts resources. The RoleBinding is correctly configured to bind this Role to the kubeapps-admin group.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the existence of kubeapps-admin Role in cozy-public namespace

# Search for Role definition in yaml files
rg -l "kind: Role.*name: kubeapps-admin.*namespace: cozy-public" --type yaml

# Look for any references to this role in the namespace
rg "namespace: cozy-public.*kubeapps-admin" --type yaml

Length of output: 136


Script:

#!/bin/bash
# Let's try a broader search to find Role and RoleBinding definitions
# First, search for any Role definitions with name kubeapps-admin
rg "kind: Role.*name:\s+kubeapps-admin" -A 5 --type yaml

# Search for files containing kubeapps-admin role definitions
fd -e yaml -e yml | xargs grep -l "kubeapps-admin"

# Search specifically in the same directory as the RoleBinding
fd -e yaml -e yml -p "packages/system/keycloak-configure/templates" | xargs cat

Length of output: 7688

packages/system/keycloak-configure/templates/roles.yaml (2)

25-40: LGTM: Well-scoped namespace-level permissions

The role follows the principle of least privilege with appropriate namespace isolation and minimal required permissions for Kubeapps functionality.


43-57: ⚠️ Potential issue

⚠️ Critical Security Risk: Overly Permissive ClusterRole

This role grants unrestricted cluster-wide access, which is a significant security risk. The concerns from the previous review remain unaddressed.

Additional security implications:

  1. Full control over CertificateSigningRequests enables creation of trusted certificates
  2. Unrestricted access to admission webhooks allows bypassing security controls
  3. Access to all non-resource URLs exposes sensitive metrics and debug endpoints

Consider this more secure alternative:

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: cozystack-cluster-admin
rules:
- apiGroups: ["apps", "batch", ""]
  resources: ["deployments", "statefulsets", "jobs", "pods", "services"]
  verbs: ["get", "list", "watch", "create", "update", "delete"]
- apiGroups: ["apps.cozystack.io"]
  resources: ["*"]
  verbs: ["*"]
# Add other specific permissions as needed
#!/bin/bash
# Check for any documentation about the role's intended use
rg "cozystack-cluster-admin" docs/ || true

# Check if similar roles exist that could be reused
rg --type yaml "kind: ClusterRole" -A 10 -B 2 | grep -B 2 "resources:" || true
🧰 Tools
🪛 checkov (3.2.312)

[HIGH] 43-57: Minimize ClusterRoles that grant permissions to approve CertificateSigningRequests

(CKV_K8S_156)


[HIGH] 43-57: Minimize ClusterRoles that grant control over validating or mutating admission webhook configurations

(CKV_K8S_155)

klinch0 and others added 2 commits December 9, 2024 16:49
@kvaps kvaps self-requested a review December 9, 2024 14:02
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LGTM

@dosubot dosubot bot added the lgtm This PR has been approved by a maintainer label Dec 9, 2024
@kvaps kvaps merged commit b6bf168 into aenix-io:main Dec 9, 2024
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