feat(yaml): detect ${{ github.<context> }} expression inside run/script steps — command injection (CWE-78) - #148
Open
ai-anant wants to merge 1 commit into
Conversation
…pt steps — bash injection (CWE-78)
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Detects GitHub Actions
run/scriptsteps that interpolate agithubcontext expression (e.g.github.ref_name,github.event.*,github.head_ref) into a shell command.Context values such as a ref/tag/branch or event payload are untrusted input in the runner shell. Interpolating them (especially unquoted, or inside a larger command template) allows the value to inject arbitrary shell commands when it contains metacharacters — arbitrary command execution on the runner (CWE-78).
Pattern shape (generic):
Validated: pos repro with ref_name/head_ref fires, safe run steps with no expression are clean. Path-scoped to
*.yml/*.yaml.