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harden: github actions step uses a mutable tag or branc... in... - #5

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harden: github actions step uses a mutable tag or branc... in...#5
anupamme wants to merge 1 commit into
tedneward:masterfrom
anupamme:fix-repo-research-pin-github-actions-to-commit-sha

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Summary

Harden input handling in .github/oldworkflows/main.yml (flagged by semgrep).

Vulnerability

Field Value
ID yaml.github-actions.security.github-actions-mutable-action-tag.github-actions-mutable-action-tag
Severity HIGH
Scanner semgrep
Rule yaml.github-actions.security.github-actions-mutable-action-tag.github-actions-mutable-action-tag
File .github/oldworkflows/main.yml:23
Assessment Defensive hardening

Description: GitHub Actions step uses a mutable tag or branch reference. Tags and branch names can be silently repointed by the action owner, enabling supply-chain attacks — as seen in the trivy-action and kics-github-action compromises. Pin the reference to a full 40-character commit SHA instead, e.g. uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608.

Changes

  • .github/oldworkflows/main.yml

Behavior Preservation

The change is scoped to 1 file on the vulnerable path; it only tightens handling of untrusted input and leaves valid inputs unaffected.


This patch removes an exploit primitive — a code pattern that, while not independently exploitable today, could be chained with other weaknesses by automated exploit-development tooling. Proactive removal of such primitives raises the bar against increasingly capable automated attack tools.


Automated security fix by OrbisAI Security

…ithub-actions-mutable-action-tag security vulnerability

Automated security fix generated by OrbisAI Security
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