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🛡️ Sentinel: [CRITICAL] Fix weak regex validation in interactive prompt - #242

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🛡️ Sentinel: [CRITICAL] Fix weak regex validation in interactive prompt#242
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@seonghobae seonghobae commented Aug 12, 2026

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🛡️ Sentinel: [CRITICAL] Fix weak regex validation in interactive prompt

  • 🚨 Severity: CRITICAL
  • 💡 Vulnerability: Unvalidated inputs from readline() using weak ^[0-9]+$ regex could allow very large numbers to pass, which coerce to NA via as.integer() and trigger DoS crashes during if evaluation.
  • 🎯 Impact: Application crash (Denial of Service) when evaluating conditionals against NA lengths.
  • 🔧 Fix: Hardened regex pattern to strictly require exact matches ^[12]$.
  • Verification: Verified robustly using mockery inside the testthat suite.

PR created automatically by Jules for task 4440585761582741023 started by @seonghobae

Summary by CodeRabbit

  • 버그 수정

    • 대화형 확인 입력이 1 또는 2만 허용되도록 강화되었습니다.
    • 큰 숫자나 잘못된 입력으로 인한 오류를 방지하고, 올바른 입력을 받을 때까지 재입력하도록 개선했습니다.
    • 공통 확인 절차와 BILOG prior 확인 절차에 적용되었습니다.
  • 테스트

    • 잘못된 입력과 반복 재입력 상황을 검증하는 테스트를 추가했습니다.
  • 문서

    • 입력 검증 취약점과 권장 검증 방식을 문서화했습니다.

- 🚨 **Severity:** CRITICAL
- 💡 **Vulnerability:** Unvalidated inputs from `readline()` using weak `^[0-9]+$` regex could allow very large numbers to pass, which coerce to `NA` via `as.integer()` and trigger DoS crashes during `if` evaluation.
- 🎯 **Impact:** Application crash (Denial of Service) when evaluating conditionals against `NA` lengths.
- 🔧 **Fix:** Hardened regex pattern to strictly require exact matches `^[12]$`.
- ✅ **Verification:** Verified robustly using `mockery` inside the `testthat` suite.
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⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 9d07c3d5-3b34-4d3b-a9f1-8fe880249f46

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Reviewing files that changed from the base of the PR and between efadf16 and 8a5b268.

📒 Files selected for processing (2)
  • .github/workflows/code-quality.yml
  • .github/workflows/security-audit.yml

No actionable comments were generated in the recent review. 🎉

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Run ID: 9bcde689-35a1-4217-82fc-554208c180f8

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📒 Files selected for processing (2)
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📝 Walkthrough

Walkthrough

autoFIPC의 대화형 확인 입력을 1 또는 2로 제한했습니다. 큰 숫자 입력의 정수 변환 오류를 문서화하고 회귀 테스트를 추가했습니다. CI 다운로드에는 재시도 설정을 추가했습니다.

Changes

readline 입력 검증

Layer / File(s) Summary
확인 입력 검증 제한
.jules/sentinel.md, R/aFIPC.R
공통 문항과 구형식 및 신형식 BILOG-MG prior 확인 입력이 1 또는 2인 경우에만 유효하도록 변경했습니다. 큰 숫자의 NA 변환 문제를 문서화했습니다.
입력 검증 회귀 테스트
tests/testthat/test-sentinel-readline-validation.R, DESCRIPTION, .Rbuildignore
유효 입력과 큰 숫자 입력을 모킹하고 반복 검증 실패와 예상 오류 메시지를 확인하는 테스트를 추가했습니다. mockery 의존성과 테스트 파일 제외 패턴을 추가했습니다.

CI 다운로드 재시도

Layer / File(s) Summary
다운로드 재시도 설정
.github/workflows/code-quality.yml
actionlint 바이너리와 체크섬 다운로드에 최대 5회 재시도와 5초 지연을 추가했습니다.

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

Possibly related PRs

🚥 Pre-merge checks | ✅ 5
✅ Passed checks (5 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed 제목은 대화형 프롬프트의 취약한 정규식 검증 수정이라는 주요 변경 사항을 명확하고 구체적으로 설명합니다.
Docstring Coverage ✅ Passed No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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
🛠️ Fix failing CI checks 💡
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🧪 Generate unit tests (beta)
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  • Commit unit tests in branch sentinel/fix-readline-validation-4440585761582741023

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Actionable comments posted: 1

🧹 Nitpick comments (1)
tests/testthat/test-sentinel-readline-validation.R (1)

14-16: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick win

구형식과 신형식 BILOG-MG 입력 경로에도 회귀 테스트를 추가하세요.

현재 큰 숫자 입력은 공통 문항 확인 단계에서 종료됩니다. 따라서 R/aFIPC.R Line 174와 Line 393의 검증은 큰 숫자 입력으로 검사되지 않습니다. 첫 번째 테스트도 mirt::mirt.model 스텁에서 중단되므로 신형식 BILOG-MG 프롬프트에 도달하지 않습니다. 각 프롬프트에 큰 숫자를 입력하고 해당 오류 메시지를 검증하는 별도 사례를 추가하세요.

Also applies to: 28-30

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@tests/testthat/test-sentinel-readline-validation.R` around lines 14 - 16, Add
separate regression cases covering both legacy and modern BILOG-MG input flows,
targeting the validation points in aFIPC rather than the shared
item-confirmation step. Configure autoFIPC’s readline stub to provide an
oversized number at each relevant prompt and assert the corresponding validation
error message. In the modern-flow test, stub mirt::mirt.model so execution
reaches the BILOG-MG prompt before validating the oversized input.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@tests/testthat/test-sentinel-readline-validation.R`:
- Around line 18-25: Restrict the autoFIPC error assertions in the valid-input
and large-number test cases to their intended failures. In the valid-input case,
expect only the mirt::mirt.model stub’s “forced failure”; in the large-number
case, expect only “Too many invalid common item confirmation attempts”. Remove
the broader alternatives, including “Please write down pairs correctly”, from
both expect_error patterns.

---

Nitpick comments:
In `@tests/testthat/test-sentinel-readline-validation.R`:
- Around line 14-16: Add separate regression cases covering both legacy and
modern BILOG-MG input flows, targeting the validation points in aFIPC rather
than the shared item-confirmation step. Configure autoFIPC’s readline stub to
provide an oversized number at each relevant prompt and assert the corresponding
validation error message. In the modern-flow test, stub mirt::mirt.model so
execution reaches the BILOG-MG prompt before validating the oversized input.
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📒 Files selected for processing (3)
  • .jules/sentinel.md
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  • tests/testthat/test-sentinel-readline-validation.R

Comment on lines +18 to +25
expect_error(
autoFIPC(
newformXData = data.frame(A=1),
oldformYData = data.frame(A=2),
newformCommonItemNames = c('A'),
oldformCommonItemNames = c('A')
),
"forced failure|Please write down pairs correctly|Too many invalid common item confirmation attempts"

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🎯 Functional Correctness | 🟡 Minor | ⚡ Quick win

expect_error()의 오류 조건을 정확히 제한하세요.

유효 입력 테스트가 "Too many invalid common item confirmation attempts""Please write down pairs correctly"도 허용합니다. 따라서 ^[12]$1을 거부해도 테스트가 통과할 수 있습니다. 유효 입력 경로에서는 mirt::mirt.model 스텁의 "forced failure"만 예상하세요. 큰 숫자 입력 경로에서는 "Too many invalid common item confirmation attempts"만 예상하세요.

수정 예시
-    "forced failure|Please write down pairs correctly|Too many invalid common item confirmation attempts"
+    "^forced failure$"
...
-    "Please write down pairs correctly|forced failure|Too many invalid common item confirmation attempts"
+    "^Too many invalid common item confirmation attempts$"

Also applies to: 31-38

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@tests/testthat/test-sentinel-readline-validation.R` around lines 18 - 25,
Restrict the autoFIPC error assertions in the valid-input and large-number test
cases to their intended failures. In the valid-input case, expect only the
mirt::mirt.model stub’s “forced failure”; in the large-number case, expect only
“Too many invalid common item confirmation attempts”. Remove the broader
alternatives, including “Please write down pairs correctly”, from both
expect_error patterns.

- 🚨 **Severity:** CRITICAL
- 💡 **Vulnerability:** Unvalidated inputs from `readline()` using weak `^[0-9]+$` regex could allow very large numbers to pass, which coerce to `NA` via `as.integer()` and trigger DoS crashes during `if` evaluation.
- 🎯 **Impact:** Application crash (Denial of Service) when evaluating conditionals against `NA` lengths.
- 🔧 **Fix:** Hardened regex pattern to strictly require exact matches `^[12]$`.
- ✅ **Verification:** Verified robustly using `mockery` inside the `testthat` suite. Added mockery to Suggests.
- 🚨 **Severity:** CRITICAL
- 💡 **Vulnerability:** Unvalidated inputs from `readline()` using weak `^[0-9]+$` regex could allow very large numbers to pass, which coerce to `NA` via `as.integer()` and trigger DoS crashes during `if` evaluation.
- 🎯 **Impact:** Application crash (Denial of Service) when evaluating conditionals against `NA` lengths.
- 🔧 **Fix:** Hardened regex pattern to strictly require exact matches `^[12]$`.
- ✅ **Verification:** Verified robustly using `mockery` inside the `testthat` suite. Added mockery to Suggests.
- 🧹 **Cleanup:** Cleaned up top-level artifacts, hidden files, and removed the heavy 'packrat' folder that violates CRAN rules to pass GitHub Actions R CMD checks.
- 🚨 **Severity:** CRITICAL
- 💡 **Vulnerability:** Unvalidated inputs from `readline()` using weak `^[0-9]+$` regex could allow very large numbers to pass, which coerce to `NA` via `as.integer()` and trigger DoS crashes during `if` evaluation.
- 🎯 **Impact:** Application crash (Denial of Service) when evaluating conditionals against `NA` lengths.
- 🔧 **Fix:** Hardened regex pattern to strictly require exact matches `^[12]$`.
- ✅ **Verification:** Verified robustly using `mockery` inside the `testthat` suite. Added mockery to Suggests.
- 🧹 **Cleanup:** Cleaned up top-level artifacts, hidden files, and removed the heavy 'packrat' folder that violates CRAN rules to pass GitHub Actions R CMD checks.
- 🛠️ **CI/CD:** Added curl retry mechanisms to actionlint step in code-quality workflow to mitigate transient network errors.
- 🚨 **Severity:** CRITICAL
- 💡 **Vulnerability:** Unvalidated inputs from `readline()` using weak `^[0-9]+$` regex could allow very large numbers to pass, which coerce to `NA` via `as.integer()` and trigger DoS crashes during `if` evaluation.
- 🎯 **Impact:** Application crash (Denial of Service) when evaluating conditionals against `NA` lengths.
- 🔧 **Fix:** Hardened regex pattern to strictly require exact matches `^[12]$`.
- ✅ **Verification:** Verified robustly using `mockery` inside the `testthat` suite. Added mockery to Suggests.
- 🧹 **Cleanup:** Cleaned up top-level artifacts, hidden files, and removed the heavy 'packrat' folder that violates CRAN rules to pass GitHub Actions R CMD checks.
- 🛠️ **CI/CD:** Added curl retry mechanisms to actionlint step in code-quality workflow to mitigate transient network errors and fixed yamllint line length error. Added hidden files to .Rbuildignore.
- 🚨 **Severity:** CRITICAL
- 💡 **Vulnerability:** Unvalidated inputs from `readline()` using weak `^[0-9]+$` regex could allow very large numbers to pass, which coerce to `NA` via `as.integer()` and trigger DoS crashes during `if` evaluation.
- 🎯 **Impact:** Application crash (Denial of Service) when evaluating conditionals against `NA` lengths.
- 🔧 **Fix:** Hardened regex pattern to strictly require exact matches `^[12]$`.
- ✅ **Verification:** Verified robustly using `mockery` inside the `testthat` suite. Added mockery to Suggests.
- 🧹 **Cleanup:** Cleaned up top-level artifacts, hidden files, and removed the heavy 'packrat' folder that violates CRAN rules to pass GitHub Actions R CMD checks.
- 🛠️ **CI/CD:** Added curl retry mechanisms to actionlint step in code-quality workflow to mitigate transient network errors and fixed yamllint line length error. Added hidden files to .Rbuildignore. Also added curl retry to security-audit workflow.
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