π‘οΈ Sentinel: λνν μ λ ₯ μ μ μ€λ²νλ‘μ° μ·¨μ½μ μμ #163
π‘οΈ Sentinel: λνν μ
λ ₯ μ μ μ€λ²νλ‘μ° μ·¨μ½μ μμ #163seonghobae wants to merge 1 commit into
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λνν(interactive) μ λ ₯ μ²λ¦¬ μ€ readline() κ°μ κ²μ¦ν λ κΈ°μ‘΄μ 무μ ν μ«μ μ κ·μ(^[0-9]+$)μ μ νν 맀μΉ(^[12]$)μΌλ‘ μμ νμ΅λλ€. μ΄λ₯Ό ν΅ν΄ κ³Όλνκ² ν° μ«μ λ¬Έμμ΄μ΄ μ λ ₯λμ΄ as.integer()μμ μ²λ¦¬λμ§ μμ NAκ° λ°νλκ±°λ 쑰건문 μ€λ₯λ‘ νλ‘μΈμ€κ° μ€λ¨λλ μ μ κ°μ μ€λ²νλ‘μ°(integer overflow coercion) μ·¨μ½μ μ ν΄κ²°νμ΅λλ€.
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Pull request overview
Tightens validation for interactive readline() prompts in autoFIPC() so only the expected β1/2β responses are accepted, preventing overflow-to-NA coercion from propagating into control-flow errors.
Changes:
- Replace permissive
^[0-9]+$input validation with exact-match^[12]$for three interactive yes/no prompts inR/aFIPC.R. - Update the Jules Sentinel log entry documenting the vulnerability and mitigation.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| R/aFIPC.R | Restricts interactive prompt input to only β1β or β2β to avoid invalid/overflowing integer coercions. |
| .jules/sentinel.md | Documents the vulnerability and prevention guidance (but currently overwrites prior log history). |
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| ## 2026-07-21 - Fix integer overflow coercion vulnerabilities in interactive prompts | ||
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| **Vulnerability:** Interactive prompts using `readline()` validated numeric inputs with `^[0-9]+$`, which allowed excessively large numeric strings to pass the regex check but evaluate to `NA` when coerced with `as.integer()`. This unhandled `NA` would cause process crashes when used in conditional statements. | ||
| **Learning:** In R, unbounded numeric regex validation (`^[0-9]+$`) coupled with `as.integer()` coercion is insufficient for exact matching and can lead to unhandled integer overflow exceptions. | ||
| **Prevention:** Strictly match interactive numeric inputs against exact expected values (e.g., `^[12]$`) instead of unbounded digit classes to prevent both unexpected values and integer overflow coercion vulnerabilities. |
π¨ Severity: MEDIUM
π‘ Vulnerability:
aFIPC.Rλ΄λΆμμreadline()μ ν΅ν λνν μ λ ₯κ°μ λ°μ λ^[0-9]+$μ κ·μμ μ¬μ©νμ΅λλ€. μ΄λ μ λ ₯λ μ«μ λ¬Έμμ΄μ΄ λ§€μ° ν΄ κ²½μ°(μ: '9999999999999') μ κ·μμ ν΅κ³Όνμ§λ§as.integer()λ³ν μNAκ° λμ΄ μ΄νμ 쑰건문 μ²λ¦¬ κ³Όμ μμ unhandled μμΈ λ° νλ‘μΈμ€ μ€λ¨μ μ λ°ν μ μλ μ·¨μ½μ μ΄ μμ΅λλ€.π― Impact: 곡격μ νΉμ μ¬μ©μμ μ€μλ‘ μΈν λΉμ μμ μΈ μ λ ₯μ΄ λ°μν κ²½μ° λ¬΄ν 루ν λλ ν¨ν€μ§ νλ‘μΈμ€ μ€λ₯(DoS μ ν)λ₯Ό λ°μμν¬ μ μμ΅λλ€.
π§ Fix:
^[0-9]+$μ κ·μμ μ νν νμ© κ°μΈ^[12]$λ‘ μμ νμ¬ μμλλ μ«μ μ λ ₯λ§μ νμ©νλλ‘ μ‘°μΉνμ΅λλ€.β Verification: ν¨ν€μ§ λ΄
testthatν μ€νΈκ° 100% ν΅κ³Όν¨μ νμΈνμΌλ©°R CMD checkμ μ½λ μ€νμΌ λ° λΉλ μμ μ± μ‘°κ±΄μ λ§μ‘±ν©λλ€.PR created automatically by Jules for task 3194123043446958959 started by @seonghobae