🛡️ Sentinel: [MEDIUM] 대화형 프롬프트 무한 루프 DoS 방지

[seonghobae]

🚨 Severity: MEDIUM
💡 Vulnerability: 대화형 사용자 프롬프트 입력을 받을 때 readline() 함수가 무한 while 루프 내에서 사용되고 있었습니다. 자동화된 입력이나 파이프를 통해 유효하지 않은 값(예: "")이 지속적으로 주입될 경우, 무한 루프에 빠져 CPU를 100% 점유하게 되고 결과적으로 서비스 거부(DoS) 상태를 유발할 수 있습니다.
🎯 Impact: 자동화된 환경이거나 비정상적인 파이프 입력이 들어올 경우 스크립트가 멈추지 않고 시스템 자원을 고갈시킬 수 있습니다.
🔧 Fix: 사용자 입력 재시도 횟수를 제한하는 max_retries 변수를 도입하여, 5회 이상 잘못된 입력이 들어올 경우 stop() 함수를 통해 프로세스를 안전하게 종료하도록 개선했습니다.
✅ Verification: 테스트 스위트(Rscript -e "testthat::test_dir('tests/testthat')")가 정상적으로 통과함을 확인했습니다.

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PR created automatically by Jules for task 10452471372800350239 started by @seonghobae

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[opencode-agent]

OpenCode Review Overview

• Head SHA: 0b3add0841997f7242047df21ea67decfe915101
• Workflow run: 28438844067
• Workflow attempt: 1
• Gate result: APPROVE (approval step)

Pull request overview

OpenCode reviewed the current-head bounded evidence and found no blocking issues.

Findings

No blocking findings.

Summary

Verification posture: CodeGraph evidence was initialized and bounded current-head evidence reviewed for changed-file evidence including .jules/sentinel.md.
Linter/static: workflow/static review evidence is bounded by the current-head GitHub Checks gate and changed-file evidence.
TDD/regression: coverage execution evidence and focused changed hunks were reviewed from bounded-review-evidence.md.
Coverage: coverage execution evidence reports supported repository test suites passed.
Docstring coverage: coverage execution evidence reports configured repository docstring gates passed or docstring coverage was advisory.
DAG: Change Flow DAG maps .jules/sentinel.md through bounded evidence, review risk, and required checks.
PoC/execution: coverage-evidence job executed on the current head and reported PASS.
DDD/domain: workflow and repository-governance invariants were reviewed against changed files in bounded evidence.
CDD/context: CodeGraph evidence, changed-file history, and focused hunks were reviewed from bounded-review-evidence.md.
Similar issues: changed-file history evidence was reviewed for comparable local precedents.
Claim/concept check: bounded evidence, repository source, and current-head workflow evidence were used for claims.
Standards search: standards and external-source checks are delegated to configured OpenCode web_search/Context7/DeepWiki sources when applicable; no evidence-backed standards blocker is present in bounded evidence.
Compatibility/convention: changed workflow/script conventions and compatibility surfaces were checked in bounded evidence.
Breaking-change/backcompat: deployment evidence and changed-file history were checked for backward-compatibility risk.
Performance: changed surfaces were checked for performance risk in bounded evidence.
Developer experience: changed automation, review, and maintenance surfaces were checked for helpful or obstructive DX impact in bounded evidence.
User experience: changed files did not identify a user-facing UI surface; bounded evidence was reviewed for UX impact.
Security/privacy: workflow-token, review-gate, and repository-automation security/privacy boundaries were checked in bounded evidence.

• Result: APPROVE
• Reason: No blockers found in the PR changes.
• Head SHA: 0b3add0841997f7242047df21ea67decfe915101
• Workflow run: 28438844067
• Workflow attempt: 1

Change Flow DAG

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (2 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (2 files)"]
  R1 --> V1["required checks"]
  Evidence --> S2["Test: test-security.R"]
  S2 --> I2["regression suite"]
  I2 --> R2["Review risk: Test: test-security.R"]
  R2 --> V2["targeted test run"]

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[opencode-agent]

Pull request overview

OpenCode reviewed the current-head bounded evidence and found no blocking issues.

Findings

No blocking findings.

Summary

Verification posture: CodeGraph evidence was initialized and bounded current-head evidence reviewed for changed-file evidence including .jules/sentinel.md.
Linter/static: workflow/static review evidence is bounded by the current-head GitHub Checks gate and changed-file evidence.
TDD/regression: coverage execution evidence and focused changed hunks were reviewed from bounded-review-evidence.md.
Coverage: coverage execution evidence reports supported repository test suites passed.
Docstring coverage: coverage execution evidence reports configured repository docstring gates passed or docstring coverage was advisory.
DAG: Change Flow DAG maps .jules/sentinel.md through bounded evidence, review risk, and required checks.
PoC/execution: coverage-evidence job executed on the current head and reported PASS.
DDD/domain: workflow and repository-governance invariants were reviewed against changed files in bounded evidence.
CDD/context: CodeGraph evidence, changed-file history, and focused hunks were reviewed from bounded-review-evidence.md.
Similar issues: changed-file history evidence was reviewed for comparable local precedents.
Claim/concept check: bounded evidence, repository source, and current-head workflow evidence were used for claims.
Standards search: standards and external-source checks are delegated to configured OpenCode web_search/Context7/DeepWiki sources when applicable; no evidence-backed standards blocker is present in bounded evidence.
Compatibility/convention: changed workflow/script conventions and compatibility surfaces were checked in bounded evidence.
Breaking-change/backcompat: deployment evidence and changed-file history were checked for backward-compatibility risk.
Performance: changed surfaces were checked for performance risk in bounded evidence.
Developer experience: changed automation, review, and maintenance surfaces were checked for helpful or obstructive DX impact in bounded evidence.
User experience: changed files did not identify a user-facing UI surface; bounded evidence was reviewed for UX impact.
Security/privacy: workflow-token, review-gate, and repository-automation security/privacy boundaries were checked in bounded evidence.

• Result: APPROVE
• Reason: No blockers found in the PR changes.
• Head SHA: 0b3add0841997f7242047df21ea67decfe915101
• Workflow run: 28438844067
• Workflow attempt: 1

Change Flow DAG

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (2 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (2 files)"]
  R1 --> V1["required checks"]
  Evidence --> S2["Test: test-security.R"]
  S2 --> I2["regression suite"]
  I2 --> R2["Review risk: Test: test-security.R"]
  R2 --> V2["targeted test run"]

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