π‘οΈ Sentinel: [MEDIUM] μ λ ₯κ° κ²μ¦μ μ κ·μ μμ μ ν΅ν μ μ μ€λ²νλ‘μ° μ·¨μ½μ λ°©μ§#166
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`readline()`μ μ λ ₯κ° κ²μ¦ μ κ·ννμμ `^[0-9]+$`μμ `^[12]$`λ‘ μμ νμ¬, μλνμ§ μμ κ±°λν μ μ λ¬Έμμ΄ μ λ ₯ μ λ°μνλ Integer Overflow Coercion Vulnerabilityλ₯Ό λ°©μ§ν¨.
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Pull request overview
This PR hardens autoFIPC()βs interactive readline()-based yes/no prompts by tightening input validation to only accept the intended choices, preventing oversized numeric strings from reaching as.integer() and producing overflow-derived NA values that can crash downstream conditionals.
Changes:
- Replace permissive
^[0-9]+$validation with strict^[12]$validation for three binary prompts inR/aFIPC.R. - Record the finding and prevention guidance in
.jules/sentinel.md.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| R/aFIPC.R | Tightens interactive prompt regex validation to only allow 1 or 2, preventing integer overflow coercion to NA. |
| .jules/sentinel.md | Adds a Sentinel entry documenting the issue, learning, and recommended prevention pattern. |
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| for (attempt in seq_len(3)) { | ||
| n <- readline(prompt = "Is it correct? (1: Yes 2: No) : ") | ||
| if (grepl("^[0-9]+$", n)) { | ||
| if (grepl("^[12]$", n)) { | ||
| return(as.integer(n)) | ||
| } |
| ## 2024-05-18 - [CRITICAL] Prevent Integer Overflow Coercion in readline Input Validation | ||
| **Vulnerability:** Interactive `readline()` prompts for binary choices (e.g., '1' or '2') in `autoFIPC` incorrectly validated input using the unbounded regular expression `^[0-9]+$`. This allows arbitrarily large numeric strings (e.g., "999999999999999999999") to pass the regex check, which subsequently evaluates to `NA` when coerced via `as.integer()`, potentially causing unhandled exceptions or process crashes. |
π¨ Severity: MEDIUM
π‘ Vulnerability:
readline()ν둬ννΈμμ^[0-9]+$μ κ·μμ μ¬μ©νμ¬ μ λ ₯μ κ²μ¦ν λ, κ³Όλνκ² ν° μ«μ(μ: "99999999999999999")κ° μ λ ₯λλ©΄ Rμas.integer()ν¨μ μ²λ¦¬ κ³Όμ μμ μ μ μ€λ²νλ‘μ°(Integer Overflow)κ° λ°μνμ¬NAλ₯Ό λ°ννκ³ , μ΄λ‘ μΈν΄ νμ λ‘μ§μμ νλ‘κ·Έλ¨ ν¬λμλ μκΈ°μΉ μμ μ€λ₯κ° λ°μν μ μμ΅λλ€.π― Impact: μ μμ λλ μ€μλ‘ ν° μ«μλ₯Ό μ λ ₯ν κ²½μ° μμ€ν μ€μλμ΄λ ν¬λμκ° λ°μν μ μμ΅λλ€.
π§ Fix: μλλ μ λ ₯κ°('1' λλ '2')λ§μ μ ννκ² μΌμΉμν€λ μ κ·ννμ
^[12]$λ‘ μμ νμ¬ μ€λ²νλ‘μ° λ°μ κ°λ₯μ±μ μμ² μ°¨λ¨νμ΅λλ€.β Verification:
testthatν μ€νΈκ° λͺ¨λ μ±κ³΅μ μΌλ‘ μ€νλμμμ νμΈνμ΅λλ€.PR created automatically by Jules for task 17412022492460508997 started by @seonghobae