bug: Unpinned tag for a non-immutable Action in workflow

[fantonangeli]

Describe the Bug

Note: I have this security alert on my fork but I cannot see it in this fork, probably due to a lack of permissions

Unpinned tag for a non-immutable Action in workflow

Severity: warning
State: fixed
Tool: CodeQL

Description

Overview

Using a tag for a 3rd party Action that is not pinned to a commit can lead to executing an untrusted Action through a supply chain attack.

Recommendation

Pinning an action to a full length commit SHA is currently the only way to use a non-immutable action as an immutable release. Pinning to a particular SHA helps mitigate the risk of a bad actor adding a
backdoor to the action's repository, as they would need to generate a SHA-1 collision for a valid Git object payload. When selecting a SHA, you should verify it is from the action's repository and not a
repository fork.

Example

Incorrect Usage

- uses: tj-actions/changed-files@v44

Correct Usage

- uses: tj-actions/changed-files@c65cd883420fd2eb864698a825fc4162dd94482c # v44

References

- GitHub Docs: Using third-party actions.

Instance

File: .github/workflows/ci_build.yaml
Lines: 54-54
Message: Unpinned 3rd party Action 'CI :: Build' step Uses Step uses 'pnpm/action-setup' with ref 'v6', not a pinned commit hash

Code

# Line 54
# Unpinned 3rd party Action 'CI :: Build' step Uses Step uses 'pnpm/action-setup' with ref 'v6', not a pinned commit hash

### Steps to reproduce

NA

### Expected Behavior

NA

### Editor Version

_No response_

### Platform

Other

### Additional Context

_No response_