🛡️ Sentinel: [MEDIUM] 외부 프로세스 출력에 대한 안전한 JSON 파싱 적용

[seonghobae]

🚨 Severity: MEDIUM
💡 Vulnerability: scripts/build_pr_queue_governance.py와 scripts/build_procurement_due_diligence.py에서 subprocess 출력을 처리할 때 제한 없는 json.loads를 사용하고 있었습니다. 이는 대량의 데이터나 깊이 중첩된 데이터를 반환할 경우 프로세스의 메모리 고갈 또는 재귀 제한 초과를 유발할 수 있습니다.
🎯 Impact: 서브프로세스 출력에 의해 의도치 않게 애플리케이션의 리소스가 고갈되고 DoS 상태에 빠질 위험이 있습니다.
🔧 Fix: json.loads(completed.stdout)를 내부에서 크기와 깊이를 검증하는 parse_json_bounded(completed.stdout)로 교체했습니다.
✅ Verification: uv run pytest tests/test_capture_pr_queue_snapshot.py tests/test_enterprise_due_diligence_gate.py tests/test_bounded_json_scripts.py 명령어를 통해 테스트 통과를 확인했습니다. 관련 Sentinel 저널에 내용을 업데이트했습니다.

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PR created automatically by Jules for task 16566119405207672090 started by @seonghobae

Summary by CodeRabbit

• Bug Fixes

  • Improved handling of JSON data returned by external commands by applying bounded parsing.
  • Reduced the risk of excessive resource usage when processing unexpectedly large command output.

• Documentation

  • Added security guidance documenting safe limits for parsing subprocess-generated JSON.

[google-labs-jules]

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 154666d9-56ee-4da5-a9f8-aefd449d6700

📥 Commits

Reviewing files that changed from the base of the PR and between 04d0bc2 and 2d79ae4.

📒 Files selected for processing (3)

• .jules/sentinel.md
• scripts/build_pr_queue_governance.py
• scripts/build_procurement_due_diligence.py

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The PR replaces unbounded JSON decoding of GitHub subprocess output with parse_json_bounded in two scripts and documents the parsing requirement in Sentinel.

Changes

Bounded JSON parsing

Layer / File(s)	Summary
Update subprocess JSON parsing scripts/build_pr_queue_governance.py, scripts/build_procurement_due_diligence.py, .jules/sentinel.md	Both scripts import and use parse_json_bounded for GitHub command output. Existing file-object reading and output checks remain unchanged. The history query fields retain the same contents. Sentinel documents the bounded parsing requirement.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to 2d79a

The PR replaces unbounded subprocess JSON parsing with bounded parsing to limit resource exhaustion risk. No actionable merge-blocking risk remains after normal checks and review.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 66.67% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	제목은 외부 프로세스 출력에 안전한 JSON 파싱을 적용한 주요 변경 사항을 정확하게 설명합니다.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch jules/sentinel-bounded-json-16566119405207672090

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[seonghobae]

Closing as superseded by #1015 (916696c6c43c771ba246af46647509fbccf00412). The current #1023 head 2d79ae40e120c69dc2c2d2585afead44e393c922 applies parse_json_bounded() only after subprocess.run(..., capture_output=True) has already materialized the complete child output, so it does not actually bound the stated stdout-memory DoS boundary. #1015 covers the same two governance callers while additionally bounding stdout/stderr during capture, enforcing command deadlines, terminating inherited-pipe descendants, using strict UTF-8 for machine output, and applying bounded JSON parsing with stable fail-closed errors. The .jules/sentinel.md note and formatting-only query-field change are not unique product behavior worth landing separately. No #1023 source is being merged.

[google-labs-jules]

Closing as superseded by #1015 (916696c6c43c771ba246af46647509fbccf00412). The current #1023 head 2d79ae40e120c69dc2c2d2585afead44e393c922 applies parse_json_bounded() only after subprocess.run(..., capture_output=True) has already materialized the complete child output, so it does not actually bound the stated stdout-memory DoS boundary. #1015 covers the same two governance callers while additionally bounding stdout/stderr during capture, enforcing command deadlines, terminating inherited-pipe descendants, using strict UTF-8 for machine output, and applying bounded JSON parsing with stable fail-closed errors. The .jules/sentinel.md note and formatting-only query-field change are not unique product behavior worth landing separately. No #1023 source is being merged.

Understood. Acknowledging that this work is superseded by #1015, which implements a more comprehensive and robust solution for bounding subprocess stdout/stderr and JSON decoding. Stopping work on this task.