chore: Set permissions for GitHub actions (#3849)

Restrict the GitHub token permissions only to the required ones; this way, even if the attackers will succeed in compromising your workflow, they won’t be able to do much.

- Included permissions for the action. https://github.com/ossf/scorecard/blob/main/docs/checks.md#token-permissions

https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#permissions

https://docs.github.com/en/actions/using-jobs/assigning-permissions-to-jobs

[Keeping your GitHub Actions and workflows secure Part 1: Preventing pwn requests](https://securitylab.github.com/research/github-actions-preventing-pwn-requests/)

Signed-off-by: nathannaveen <[email protected]>

.github/workflows/create-release.yml

@@ -5,8 +5,14 @@ on:
     # branches to consider in the event; optional, defaults to all
     branches:
       - master
+permissions:
+  contents: read
+
 jobs:
   update_release_draft:
+    permissions:
+      contents: write  # for release-drafter/release-drafter to create a github release
+      pull-requests: write  # for release-drafter/release-drafter to add label to PR
     runs-on: ubuntu-latest
     steps:
       # Drafts your next Release notes as Pull Requests are merged into "master"

.github/workflows/labeler.yml

@@ -3,8 +3,14 @@ on:
   issues:
     types: [opened, edited]
 
+permissions:
+  contents: read
+
 jobs:
   triage:
+    permissions:
+      contents: read  # for github/issue-labeler to get repo contents
+      issues: write  # for github/issue-labeler to create or remove labels
     runs-on: ubuntu-latest
     steps:
     - uses: github/[email protected]

.github/workflows/lock.yml

@@ -4,8 +4,14 @@ on:
   schedule:
     - cron: '0 0 * * *'
 
+permissions:
+  contents: read
+
 jobs:
   lock:
+    permissions:
+      issues: write  # for dessant/lock-threads to lock issues
+      pull-requests: write  # for dessant/lock-threads to lock PRs
     runs-on: ubuntu-latest
     steps:
       - uses: dessant/lock-threads@v3

.github/workflows/version-check.yml

@@ -7,6 +7,9 @@ name: Version Check
 on: push
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
+permissions:
+  contents: read
+
 jobs:
   # This workflow contains a single job called "build"
   Version-Check: