🛡️ Sentinel: [MEDIUM] 대화형 프롬프트의 정수 오버플로 취약점 수정

[seonghobae]

이 PR은 대화형 입력 처리 중 발생할 수 있는 정수 오버플로 강제 변환 취약점을 해결합니다.

취약점 내용:
기존 코드에서는 사용자의 숫자 입력(1 또는 2)을 ^[0-9]+$ 정규식으로 검증했습니다. 이 방식은 제한 없는 길이의 숫자를 허용하므로, 사용자가 지나치게 큰 숫자를 입력할 경우 정규식 검사는 통과하지만, 이후 as.integer() 함수에서 범위를 초과해 NA로 강제 변환(coercion)되는 문제가 발생할 수 있습니다. 이는 후속 로직에서 예기치 않은 프로세스 충돌(crash)이나 보안 우회를 초래할 수 있는 취약점입니다.

수정 사항:

• R/aFIPC.R의 checkCorrect, checkoldformBILOGprior, checknewformBILOGprior 함수 내 입력 검증 정규식을 정확히 기대하는 값인 ^[12]$로 수정하여 오버플로를 유발할 수 있는 입력을 원천 차단했습니다.
• .jules/sentinel.md 저널에 입력 검증 시 무제한 숫자 클래스 사용의 위험성과 명시적인 범위/길이 제한의 필요성에 대한 학습 내용을 추가했습니다.

검증:

• 수정 후 testthat 테스트 스위트가 오류 없이 모두 통과됨을 확인했습니다.

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PR created automatically by Jules for task 1673785474164336385 started by @seonghobae

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Reviewing files that changed from the base of the PR and between f87c232 and 0fe1318.

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• .jules/sentinel.md
• R/aFIPC.R

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[devin-ai-integration]

Devin Review found 1 potential issue.

[devin-ai-integration]

📝 Info: Regex tightening preserves valid-input behavior

The three prompts change ^[0-9]+$ to ^[12]$. Only 1/2 are meaningful and their handling is unchanged in checkCorrect, checkoldformBILOGprior, and checknewformBILOGprior. Other digit inputs, once accepted then rejected downstream, are now retried up to three times before stopping.

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