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πŸ›‘οΈ Sentinel: [security improvement] 검색 엔진 인덱싱 방지λ₯Ό ν†΅ν•œ 정보 λ…ΈμΆœ λ³΄μ•ˆ κ°•ν™” #269

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πŸ›‘οΈ Sentinel: [security improvement] 검색 엔진 인덱싱 방지λ₯Ό ν†΅ν•œ 정보 λ…ΈμΆœ λ³΄μ•ˆ κ°•ν™” #269

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5 changes: 5 additions & 0 deletions .jules/sentinel.md
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Expand Up @@ -83,3 +83,8 @@
**Vulnerability:** 정적 HTML 생성 λ„κ΅¬μ—μ„œ 맀번 λ‹€λ₯Έ Nonceλ₯Ό λ™μ μœΌλ‘œ μƒμ„±ν•˜μ—¬ CSP에 μ μš©ν•˜λŠ” 것은, 캐싱 νš¨μœ¨μ„ μ €ν•˜μ‹œν‚¬ 뿐만 μ•„λ‹ˆλΌ 정적 배포 ν™˜κ²½(예: GitHub Pages λ“±)μ—μ„œ μ˜¬λ°”λ₯Έ λ³΄μ•ˆ μ •μ±… μˆ˜λ¦½μ„ λ°©ν•΄ν•  수 μžˆλŠ” μ•ˆν‹° νŒ¨ν„΄μž…λ‹ˆλ‹€.
**Learning:** μ •μ μœΌλ‘œ κ³ μ •λœ 인라인 μŠ€νƒ€μΌμ΄λ‚˜ μŠ€ν¬λ¦½νŠΈμ—λŠ” λ‚œμˆ˜ν™”λœ Nonce보닀 μ½˜ν…μΈ  자체의 ν•΄μ‹œ(SHA-256 λ“±)λ₯Ό μ‚¬μš©ν•˜λŠ” 것이 μ•ˆμ „ν•˜κ³  μΌκ΄€λœ λ°©μ‹μž„μ„ λ°°μ› μŠ΅λ‹ˆλ‹€.
**Prevention:** μžλ™ μƒμ„±λ˜λŠ” 정적 HTML의 μ½˜ν…μΈ  λ³΄μ•ˆ μ •μ±…(CSP)μ—λŠ” `style-src 'sha256-<HASH>'` 방식을 μ μš©ν•˜κ³ , `<style>` νƒœκ·Έμ—μ„œ λΆˆν•„μš”ν•œ `nonce` 속성을 μ œκ±°ν•˜μ—¬ λΈŒλΌμš°μ €μ˜ 무결성 검증 κΈ°λŠ₯을 적극 ν™œμš©ν•˜μ‹­μ‹œμ˜€.

## 2026-07-25 - [html4tree] Search Engine Indexing 방지 (Information Exposure μ™„ν™”)
**Vulnerability:** 곡개적으둜 ν˜ΈμŠ€νŒ…λœ 디렉토리 λͺ©λ‘μ΄ 검색 엔진에 μ˜ν•΄ μ˜λ„μΉ˜ μ•Šκ²Œ μΈλ±μ‹±λ˜μ–΄ 정보 λ…ΈμΆœ(Information Exposure)이 λ°œμƒν•  수 μžˆμ—ˆμŠ΅λ‹ˆλ‹€.
**Learning:** 정적 디렉토리 μΈλ±μ„œκ°€ μƒμ„±ν•˜λŠ” HTML νŽ˜μ΄μ§€λŠ” 배포 ν™˜κ²½μ— 따라 웹에 곡개될 수 μžˆμœΌλ―€λ‘œ, 기본적으둜 검색 엔진 ν¬λ‘€λŸ¬κ°€ μ ‘κ·Όν•˜κ±°λ‚˜ μƒ‰μΈν•˜μ§€ μ•Šλ„λ‘ 방어적인 κΈ°λ³Έ μ„€μ •(Secure by Default)이 ν•„μš”ν•©λ‹ˆλ‹€.
**Prevention:** μƒμ„±λ˜λŠ” HTML의 <head> μ˜μ—­μ— <meta name="robots" content="noindex, nofollow"> νƒœκ·Έλ₯Ό μΆ”κ°€ν•˜μ—¬ 검색 μ—”μ§„μ˜ μžλ™ 색인을 λ°©μ§€ν•˜μ‹­μ‹œμ˜€.
2 changes: 2 additions & 0 deletions src/main/kotlin/html4tree/main.kt
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Expand Up @@ -327,6 +327,8 @@ ${cssContent} </style>
<meta http-equiv="Content-Security-Policy" content="default-src 'none'; style-src '${styleHash}'; base-uri 'none'; form-action 'none';">
<!-- λ³΄μ•ˆ ν–₯상: 리퍼러λ₯Ό ν†΅ν•œ 디렉토리 경둜 λ…ΈμΆœ 방지 -->
<meta name="referrer" content="no-referrer">
<!-- λ³΄μ•ˆ ν–₯상: 검색 엔진 인덱싱 방지 -->
<meta name="robots" content="noindex, nofollow">
<title>${curr_dir.getName().escapeHtml()}</title>
${css}
</head>
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2 changes: 2 additions & 0 deletions src/test/kotlin/html4tree/MainTest.kt
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Expand Up @@ -93,6 +93,7 @@ class MainTest {
assertTrue(indexFile.exists())
val htmlContent = indexFile.readText()
assertTrue(htmlContent.contains("<html lang=\"ko\">"))
assertTrue(htmlContent.contains("<meta name=\"robots\" content=\"noindex, nofollow\">"))
assertTrue(htmlContent.contains("이 λ””λ ‰ν† λ¦¬λŠ” λΉ„μ–΄ μžˆμŠ΅λ‹ˆλ‹€."))
assertTrue(htmlContent.contains("role=\"list\""))
}
Expand Down Expand Up @@ -308,6 +309,7 @@ class MainTest {
assertTrue(indexFile.exists())
val htmlContent = indexFile.readText()
assertTrue(htmlContent.contains("<html lang=\"ko\">"))
assertTrue(htmlContent.contains("<meta name=\"robots\" content=\"noindex, nofollow\">"))
assertTrue(htmlContent.contains("<meta name=\"color-scheme\" content=\"light dark\">"))
assertTrue(htmlContent.contains("<nav aria-label=\"디렉토리 λͺ©λ‘\">"))
assertTrue(htmlContent.contains("role=\"list\""))
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