🛡️ Sentinel: [CRITICAL] Fix weak regex validation in interactive prompt by seonghobae · Pull Request #242 · ContextualWisdomLab/aFIPC

seonghobae · 2026-08-12T16:08:58Z

🛡️ 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.

google-labs-jules · 2026-08-12T16:08:59Z

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coderabbitai · 2026-08-12T16:09:22Z

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

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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

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ℹ️ Recent review info

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Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

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

📥 Commits

Reviewing files that changed from the base of the PR and between f6338fb and efadf16.

📒 Files selected for processing (2)

.Rbuildignore
.github/workflows/code-quality.yml

📝 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 `2`인 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

ContextualWisdomLab/aFIPC#193: 동일한 readline() 검증 변경과 테스트 및 문서를 다룹니다.
ContextualWisdomLab/aFIPC#214: R/aFIPC.R의 확인 입력을 1 또는 2로 제한합니다.
ContextualWisdomLab/aFIPC#219: 동일한 정규식 변경과 회귀 테스트 및 문서를 포함합니다.

🚥 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 💡

Create stacked PR
Commit on current branch

🧪 Generate unit tests (beta)

Create PR with unit tests
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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Fix all unresolved CodeRabbit comments on this PR:

Push a commit to this branch (recommended)
Create a new PR with the fixes

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 2eaf0440-d10a-42fa-b645-3cdaf07723df

📥 Commits

Reviewing files that changed from the base of the PR and between 35e4498 and cc7b756.

📒 Files selected for processing (3)

.jules/sentinel.md
R/aFIPC.R
tests/testthat/test-sentinel-readline-validation.R

coderabbitai · 2026-08-12T16:12:38Z

+  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"


🎯 Functional Correctness | 🟡 Minor | ⚡ Quick win

expect_error()의 오류 조건을 정확히 제한하세요.

유효 입력 테스트가 "Too many invalid common item confirmation attempts"와 "Please write down pairs correctly"도 허용합니다. 따라서 ^[12]$가 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.

seonghobae · 2026-08-14T08:12:45Z

이 PR은 #249로 대체합니다. 동일한 세 정규식 수정 외에 mockery 의존성, 광범위한 오류 대안(forced failure|...)을 허용해 strict validation을 직접 증명하지 못하는 테스트, 그리고 actionlint/gitleaks 다운로드 재시도·.Rbuildignore 변경까지 한 PR에 혼합되어 있습니다. #249는 런타임 수정과 세 경로의 엄격한 정규식 계약만 focused test로 고정합니다. 다운로드 신뢰성 개선은 별도 CI PR에서 checksum·timeout 계약과 함께 다뤄야 합니다.

google-labs-jules · 2026-08-14T08:15:52Z

이 PR은 #249로 대체합니다. 동일한 세 정규식 수정 외에 mockery 의존성, 광범위한 오류 대안(forced failure|...)을 허용해 strict validation을 직접 증명하지 못하는 테스트, 그리고 actionlint/gitleaks 다운로드 재시도·.Rbuildignore 변경까지 한 PR에 혼합되어 있습니다. #249는 런타임 수정과 세 경로의 엄격한 정규식 계약만 focused test로 고정합니다. 다운로드 신뢰성 개선은 별도 CI PR에서 checksum·timeout 계약과 함께 다뤄야 합니다.

Understood. Acknowledging that this work is now obsolete as it has been superseded by #249, and stopping work on this task.

coderabbitai Bot reviewed Aug 12, 2026

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seonghobae added 5 commits August 12, 2026 16:21

seonghobae closed this Aug 14, 2026

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

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