🛡️ Sentinel: 대화형 프롬프트의 정수 오버플로우 취약점 수정

[seonghobae]

🚨 심각도: 중간 (MEDIUM)

대화형 R 세션에서 사용자가 숫자 이외의 값을 입력하는 것을 방지하기 위한 정규식 검증 로직에 취약점이 존재했습니다. ^[0-9]+$ 패턴은 아무리 큰 숫자라도 통과시키기 때문에, 사용자가 의도적으로 매우 큰 수를 입력할 경우 as.integer() 변환 시 정수 오버플로우가 발생하여 NA가 반환되고 프로그램이 예기치 않게 종료될 수 있습니다.

💡 취약점 설명

R/aFIPC.R 내부의 사용자 입력 검증 과정에서 입력 허용 범위가 충분히 제한되지 않아 오버플로우 취약점이 발생할 수 있었습니다.

🎯 영향

악의적인 입력이나 사용자의 단순한 실수로 인해 R 프로세스가 다운스트림에서 충돌을 일으킬 위험이 있습니다.

🔧 해결 방법

숫자가 1 또는 2만 들어오도록 정규식 패턴을 ^[12]$로 수정하여 명확한 입력만 허용하도록 변경했습니다.

✅ 검증 방법

전체 테스트 스위트(aFIPC package test suite)를 통과시켰으며, 로직 검증 정규식이 정상 동작하는 것을 확인했습니다.

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PR created automatically by Jules for task 1667049396796106098 started by @seonghobae

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[seonghobae]

Closing as superseded by #238. The canonical PR contains the identical three bounded-choice production fixes and security rationale, plus regressions for all three interactive paths and the current R dependency ABI repair. No unique implementation remains here.

[google-labs-jules]

Closing as superseded by #238. The canonical PR contains the identical three bounded-choice production fixes and security rationale, plus regressions for all three interactive paths and the current R dependency ABI repair. No unique implementation remains here.

Understood. Acknowledging that this work is superseded by #238 and stopping work on this task.