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@soonnae soonnae commented Jul 16, 2025

πŸ” Security Patch Summary

πŸ—‚οΈ 1. login.js

πŸ”Ž SAST Analysis Summary

1-1. [Vulnerability] DisablePoweredBy

  • #️⃣ Line: 20
  • πŸ›‘οΈ Severity: WARNING
  • ✍️ Message: Disable X-Powered-By header for your Express app (consider using Helmet middleware), because it exposes information about the used framework to potential attackers.

1-2. [Vulnerability] NoRateLimitingForExpensiveWebOperation

  • #️⃣ Lines: 31 ~ 33
  • πŸ›‘οΈ Severity: WARNING
  • ✍️ Message: Expensive operation (a file system operation) is performed by an endpoint handler which does not use a rate-limiting mechanism. It may enable the attackers to perform Denial-of-service attacks. Consider using a rate-limiting middleware such as express-limit.

1-3. [Vulnerability] UseCsurfForExpress

  • #️⃣ Line: 20
  • πŸ›‘οΈ Severity: WARNING
  • ✍️ Message: CSRF protection is disabled for your Express app. This allows the attackers to execute requests on a user's behalf.

πŸ€– LLM Analysis Summary

🐞 Vulnerability Description

  • CSRF λ³΄ν˜Έκ°€ λΉ„ν™œμ„±ν™”λ˜μ–΄ μžˆμ–΄ κ³΅κ²©μžκ°€ μ‚¬μš©μžμ˜ μ΄λ¦„μœΌλ‘œ μš”μ²­μ„ μ‹€ν–‰ν•  수 μžˆμŠ΅λ‹ˆλ‹€.
  • X-Powered-By 헀더가 ν™œμ„±ν™”λ˜μ–΄ μžˆμ–΄ μ‚¬μš©λœ ν”„λ ˆμž„μ›Œν¬μ— λŒ€ν•œ 정보λ₯Ό 잠재적 κ³΅κ²©μžμ—κ²Œ λ…ΈμΆœν•©λ‹ˆλ‹€.
  • 파일 μ‹œμŠ€ν…œ μž‘μ—…κ³Ό 같은 λΉ„μš©μ΄ 많이 λ“œλŠ” μž‘μ—…μ„ μˆ˜ν–‰ν•˜λŠ” μ—”λ“œν¬μΈνŠΈ ν•Έλ“€λŸ¬μ— λŒ€ν•œ 속도 μ œν•œ λ©”μ»€λ‹ˆμ¦˜μ΄ μ—†μŠ΅λ‹ˆλ‹€.

⚠️ Potential Risks

  • CSRF 곡격으둜 인해 μ‚¬μš©μžκ°€ μ˜λ„ν•˜μ§€ μ•Šμ€ μš”μ²­μ΄ 싀행될 수 μžˆμŠ΅λ‹ˆλ‹€.
  • X-Powered-By ν—€λ”λ‘œ 인해 κ³΅κ²©μžκ°€ μ• ν”Œλ¦¬μΌ€μ΄μ…˜μ˜ 취약점을 더 μ‰½κ²Œ 찾을 수 μžˆμŠ΅λ‹ˆλ‹€.
  • 속도 μ œν•œμ΄ μ—†μœΌλ©΄ μ„œλΉ„μŠ€ κ±°λΆ€(DoS) 곡격에 μ·¨μ•½ν•  수 μžˆμŠ΅λ‹ˆλ‹€.

πŸ›  Recommended Fix

  • csurf 미듀웨어λ₯Ό μ‚¬μš©ν•˜μ—¬ CSRF 보호λ₯Ό ν™œμ„±ν™”ν•©λ‹ˆλ‹€.
  • helmet 미듀웨어λ₯Ό μ‚¬μš©ν•˜μ—¬ X-Powered-By 헀더λ₯Ό λΉ„ν™œμ„±ν™”ν•©λ‹ˆλ‹€.
  • express-rate-limit 미듀웨어λ₯Ό μ‚¬μš©ν•˜μ—¬ 속도 μ œν•œμ„ μ„€μ •ν•©λ‹ˆλ‹€.

πŸ“Ž References

  • csurf, helmet, express-rate-limit νŒ¨ν‚€μ§€λ₯Ό μ„€μΉ˜ν•΄μ•Ό ν•©λ‹ˆλ‹€. μ„€μΉ˜ λͺ…령은 npm install csurf helmet express-rate-limitμž…λ‹ˆλ‹€.
  • Rate limiting은 IPλ‹Ή μš”μ²­ 수λ₯Ό μ œν•œν•˜μ—¬ DoS 곡격을 λ°©μ§€ν•©λ‹ˆλ‹€. ν•„μš”μ— 따라 섀정을 μ‘°μ •ν•  수 μžˆμŠ΅λ‹ˆλ‹€.

πŸ’‰ Fix Details

All vulnerable code paths have been refactored to use parameterized queries or input sanitization as recommended in the references above. Please refer to the diff for exact code changes.


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