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🛡️ Sentinel: [MEDIUM] Fix integer coercion DoS vulnerability#157

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🛡️ Sentinel: [MEDIUM] Fix integer coercion DoS vulnerability#157
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sentinel/fix-integer-coercion-dos-6430760745028578172

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@seonghobae

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🚨 Severity: MEDIUM
💡 Vulnerability: Interactive prompt inputs (readline()) were validated against a weak regex ^[0-9]+$ which permitted large numbers that crash as.integer() via NA coercion, leading to Denial of Service exceptions during evaluation in interactive or test environments.
🎯 Impact: Attackers or malformed automated inputs could bypass basic interactive checks and crash the autoFIPC logic, resulting in process disruption (DoS).
🔧 Fix: Replaced grepl("^[0-9]+$", n) with strict-boundary matching grepl("^[12]$", n) across R/aFIPC.R to exactly map valid selections.
✅ Verification: testthat suite runs correctly without coercion regressions (aFIPC Coverage: 36.30%, unmodified by the fix since tests rely on mockery injection or bypass interactive logic).


PR created automatically by Jules for task 6430760745028578172 started by @seonghobae

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Pull request overview

OpenCode cannot approve yet because required coverage evidence did not pass.

Review outcome

1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence

  • Problem: The required coverage-evidence job result was failure, so OpenCode cannot establish approval sufficiency for this head.

  • Root cause: Automated approval is only valid when the same-head coverage-evidence job proves supported repository test suites passed and configured docstring gates passed or were advisory, or reports not applicable because no supported source files or package manifests exist. Missing, failed, skipped, unavailable, or unsupported-tooling test evidence is a blocker.

  • Fix: Install or configure the repository test/docstring evidence tooling when source files or package manifests exist, rerun the current-head coverage-evidence job, and approve only after it reports success with required evidence or explicit no-source not-applicable evidence.

  • Regression test: Keep the approval branch checking needs.coverage-evidence.result == success before posting APPROVE, and publish REQUEST_CHANGES when coverage-evidence blocker states such as cancelled, skipped, failed, unsupported-tooling, or below-100 evidence are present.

  • Result: REQUEST_CHANGES

  • Reason: coverage-evidence result was failure, so required test/docstring evidence was not proven for current head 33048abd1fe05f2e88b947adc646c92ec5fe9004.

  • Head SHA: 33048abd1fe05f2e88b947adc646c92ec5fe9004

  • Workflow run: 29763818120

  • Workflow attempt: 1

Coverage evidence

Coverage Decision

  • Result: FAIL
  • Test evidence: not proven passing
  • Docstring evidence: not proven passing when configured
  • Failure count: 1

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (3 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (3 files)"]
  R1 --> V1["required checks"]
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OpenCode Review Overview

  • Head SHA: 33048abd1fe05f2e88b947adc646c92ec5fe9004
  • Workflow run: 29763818120
  • Workflow attempt: 1
  • Gate result: REQUEST_CHANGES (approval step)

Pull request overview

OpenCode cannot approve yet because required coverage evidence did not pass.

Review outcome

1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence

  • Problem: The required coverage-evidence job result was failure, so OpenCode cannot establish approval sufficiency for this head.

  • Root cause: Automated approval is only valid when the same-head coverage-evidence job proves supported repository test suites passed and configured docstring gates passed or were advisory, or reports not applicable because no supported source files or package manifests exist. Missing, failed, skipped, unavailable, or unsupported-tooling test evidence is a blocker.

  • Fix: Install or configure the repository test/docstring evidence tooling when source files or package manifests exist, rerun the current-head coverage-evidence job, and approve only after it reports success with required evidence or explicit no-source not-applicable evidence.

  • Regression test: Keep the approval branch checking needs.coverage-evidence.result == success before posting APPROVE, and publish REQUEST_CHANGES when coverage-evidence blocker states such as cancelled, skipped, failed, unsupported-tooling, or below-100 evidence are present.

  • Result: REQUEST_CHANGES

  • Reason: coverage-evidence result was failure, so required test/docstring evidence was not proven for current head 33048abd1fe05f2e88b947adc646c92ec5fe9004.

  • Head SHA: 33048abd1fe05f2e88b947adc646c92ec5fe9004

  • Workflow run: 29763818120

  • Workflow attempt: 1

Coverage evidence

Coverage Decision

  • Result: FAIL
  • Test evidence: not proven passing
  • Docstring evidence: not proven passing when configured
  • Failure count: 1

Changed-File Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (3 files)"]
  S1 --> I1["repository behavior"]
  I1 --> R1["Review risk: Changed file (3 files)"]
  R1 --> V1["required checks"]
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@seonghobae

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Live source-diff 재감사 결과, 이 PR의 readline 보안 변경은 활성 대체 PR #159 (current head e37766c)에 포괄되어 있습니다. #159는 세 호출부의 단순 정규식 중복 대신 공통 .is_binary_prompt_choice()에서 character/scalar/non-NA/1-or-2 계약을 강제하고 oversized·whitespace·vector·numeric 입력 직접 단위 테스트를 포함합니다. current-head R CMD check, quality, OSV, dependency-review, Trivy, Semgrep, Strix가 모두 성공했으므로 단일 안전 구현을 유지하기 위해 #159로 superseded 처리하여 닫습니다.

@seonghobae seonghobae closed this Jul 21, 2026
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Live source-diff 재감사 결과, 이 PR의 readline 보안 변경은 활성 대체 PR #159 (current head e37766c)에 포괄되어 있습니다. #159는 세 호출부의 단순 정규식 중복 대신 공통 .is_binary_prompt_choice()에서 character/scalar/non-NA/1-or-2 계약을 강제하고 oversized·whitespace·vector·numeric 입력 직접 단위 테스트를 포함합니다. current-head R CMD check, quality, OSV, dependency-review, Trivy, Semgrep, Strix가 모두 성공했으므로 단일 안전 구현을 유지하기 위해 #159로 superseded 처리하여 닫습니다.

Understood. Acknowledging that this work is now obsolete and stopping work on this task.

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