🛡️ Sentinel: [CRITICAL] Fix Argument Injection in CLI#96
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OpenCode Agent approved this PR.
PR adds security hardening against argument injection in CI scripts and documents the vulnerability pattern. Changes are correctly scoped with proper validation and error handling.
- Result: APPROVE
- Reason: Changes implement security hardening without introducing new risks
- Head SHA:
21cd730234f8d3e87be0081df8a7745d04443c3d - Workflow run: 27782018271
- Workflow attempt: 1
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Pull request overview
This PR hardens the CI merge/review scheduler by validating PR numbers before passing them to gh CLI commands, addressing a potential argument-injection vector if the PR number payload were tampered with. It also records the security learning in the Sentinel knowledge base.
Changes:
- Validate/cast
pr["number"]to a positive integer before using it ingh pr merge. - Validate/cast
pr["number"]to a positive integer before using it as a workflow input ingh workflow run. - Add a Sentinel entry documenting the “unvalidated numeric ID” argument-injection class and prevention guidance.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| scripts/ci/pr_review_merge_scheduler.py | Adds PR-number integer validation before invoking gh commands. |
| .jules/sentinel.md | Documents the new security finding and prevention guidance. |
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| pr_num = int(pr["number"]) | ||
| if pr_num <= 0: | ||
| raise ValueError(f"Invalid PR number: {pr_num}") | ||
| number = str(pr_num) |
| if dry_run: | ||
| return | ||
| pr_num = int(pr["number"]) | ||
| if pr_num <= 0: | ||
| raise ValueError(f"Invalid PR number: {pr_num}") |
| **Vulnerability:** The VibeSec scanner lacked explicit mapping to standard vulnerability frameworks (like OWASP Top 10) and relied on manual invocation, meaning vulnerabilities could easily bypass detection and be committed by developers or AI agents (like Claude Code or Codex). | ||
| **Learning:** To enforce security guardrails effectively, static analysis tools should intercept the workflow at commit time. Mapping findings to OWASP categories improves the clarity and actionability of the scanner output. | ||
| **Prevention:** Updated `SCAN_RULES` messages to include relevant OWASP classifications (e.g., A01, A03). Added a `vibesec hook` command that automatically installs a `pre-commit` script to block commits if critical or high vulnerabilities are detected. | ||
| ## 2024-06-18 - Argument Injection via Unvalidated Numeric IDs |
🚨 Severity: CRITICAL
💡 Vulnerability: Argument injection vulnerability when passing numerical IDs to external CLIs without validation.
🎯 Impact: Could allow malicious payloads to be interpreted as command line arguments if PR number data is tampered with.
🔧 Fix: Explicitly validate the input by casting to an integer and checking boundaries (e.g.,
> 0) before converting to a string.✅ Verification: Ran the test suite to ensure the validation doesn't break normal operation.
PR created automatically by Jules for task 78646741869033452 started by @seonghobae