chore: tighten GitHub workflow permissions (#15282)

.github/workflows/docker-base.yaml

@@ -22,10 +22,6 @@ on:
 
 permissions:
   contents: read
-  # Necessary to push docker images to ghcr.io.
-  packages: write
-  # Necessary for depot.dev authentication.
-  id-token: write
 
 # Avoid running multiple jobs for the same commit.
 concurrency:
@@ -33,6 +29,11 @@ concurrency:
 
 jobs:
   build:
+    permissions:
+      # Necessary for depot.dev authentication.
+      id-token: write
+      # Necessary to push docker images to ghcr.io.
+      packages: write
     runs-on: ubuntu-latest
     if: github.repository_owner == 'coder'
     steps:

.github/workflows/nightly-gauntlet.yaml

@@ -6,6 +6,10 @@ on:
     # Every day at midnight
     - cron: "0 0 * * *"
   workflow_dispatch:
+
+permissions:
+  contents: read
+
 jobs:
   go-race:
     # While GitHub's toaster runners are likelier to flake, we want consistency

.github/workflows/pr-cleanup.yaml

@@ -8,12 +8,12 @@ on:
         description: "PR number"
         required: true
 
-permissions:
-  packages: write
-
 jobs:
   cleanup:
     runs-on: "ubuntu-latest"
+    permissions:
+      # Necessary to delete docker images from ghcr.io.
+      packages: write
     steps:
       - name: Harden Runner
         uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1

.github/workflows/pr-deploy.yaml

@@ -30,8 +30,6 @@ env:
 
 permissions:
   contents: read
-  packages: write
-  pull-requests: write # needed for commenting on PRs
 
 jobs:
   check_pr:
@@ -171,6 +169,8 @@ jobs:
     needs: get_info
     if: needs.get_info.outputs.BUILD == 'true' || github.event.inputs.deploy == 'true'
     runs-on: "ubuntu-latest"
+    permissions:
+      pull-requests: write # needed for commenting on PRs
     steps:
       - name: Harden Runner
         uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
@@ -205,6 +205,9 @@ jobs:
     # Run build job only if there are changes in the files that we care about or if the workflow is manually triggered with --build flag
     if: needs.get_info.outputs.BUILD == 'true'
     runs-on: ${{ github.repository_owner == 'coder' && 'depot-ubuntu-22.04-8' || 'ubuntu-latest' }}
+    permissions:
+      # Necessary to push docker images to ghcr.io.
+      packages: write
     # This concurrency only cancels build jobs if a new build is triggred. It will avoid cancelling the current deployemtn in case of docs chnages.
     concurrency:
       group: build-${{ github.workflow }}-${{ github.ref }}-${{ needs.get_info.outputs.BUILD }}

.github/workflows/release-validation.yaml

@@ -5,6 +5,9 @@ on:
     tags:
       - "v*"
 
+permissions:
+  contents: read
+
 jobs:
   network-performance:
     runs-on: ubuntu-latest

.github/workflows/release.yaml

@@ -18,12 +18,7 @@ on:
         default: false
 
 permissions:
-  # Required to publish a release
-  contents: write
-  # Necessary to push docker images to ghcr.io.
-  packages: write
-  # Necessary for GCP authentication (https://github.com/google-github-actions/setup-gcloud#usage)
-  id-token: write
+  contents: read
 
 concurrency: ${{ github.workflow }}-${{ github.ref }}
 
@@ -40,6 +35,13 @@ jobs:
   release:
     name: Build and publish
     runs-on: ${{ github.repository_owner == 'coder' && 'depot-ubuntu-22.04-8' || 'ubuntu-latest' }}
+    permissions:
+      # Required to publish a release
+      contents: write
+      # Necessary to push docker images to ghcr.io.
+      packages: write
+      # Necessary for GCP authentication (https://github.com/google-github-actions/setup-gcloud#usage)
+      id-token: write
     env:
       # Necessary for Docker manifest
       DOCKER_CLI_EXPERIMENTAL: "enabled"

.github/workflows/stale.yaml

@@ -1,16 +1,21 @@
-name: Stale Issue, Banch and Old Workflows Cleanup
+name: Stale Issue, Branch and Old Workflows Cleanup
 on:
   schedule:
     # Every day at midnight
     - cron: "0 0 * * *"
   workflow_dispatch:
+
+permissions:
+  contents: read
+
 jobs:
   issues:
     runs-on: ubuntu-latest
     permissions:
+      # Needed to close issues.
       issues: write
+      # Needed to close PRs.
       pull-requests: write
-      actions: write
     steps:
       - name: Harden Runner
         uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
@@ -86,6 +91,9 @@ jobs:
 
   branches:
     runs-on: ubuntu-latest
+    permissions:
+      # Needed to delete branches.
+      contents: write
     steps:
       - name: Harden Runner
         uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1
@@ -105,6 +113,9 @@ jobs:
           exclude_open_pr_branches: true
   del_runs:
     runs-on: ubuntu-latest
+    permissions:
+      # Needed to delete workflow runs.
+      actions: write
     steps:
       - name: Harden Runner
         uses: step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7 # v2.10.1