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@seoonju seoonju commented Jul 15, 2025

πŸ” Security Patch Summary

πŸ—‚οΈ 1. contributions.js

πŸ”Ž SAST Analysis Summary

1-1. [Vulnerability] Code Injection

1-2. [Vulnerability] Code Injection

1-3. [Vulnerability] Code Injection

πŸ€– LLM Analysis Summary

🐞 Vulnerability Description

eval() ν•¨μˆ˜λŠ” λ¬Έμžμ—΄μ„ μ½”λ“œλ‘œ μ‹€ν–‰ν•˜λŠ” κΈ°λŠ₯을 μ œκ³΅ν•©λ‹ˆλ‹€. 이둜 인해 μ‚¬μš©μž μž…λ ₯이 eval()둜 μ „λ‹¬λ˜λ©΄ μ½”λ“œ μΈμ μ…˜ 곡격에 μ·¨μ•½ν•΄μ§ˆ 수 μžˆμŠ΅λ‹ˆλ‹€. 특히, μ‚¬μš©μžκ°€ μž…λ ₯ν•œ 데이터λ₯Ό 직접 eval()에 μ „λ‹¬ν•˜λŠ” 것은 맀우 μœ„ν—˜ν•©λ‹ˆλ‹€.

⚠️ Potential Risks

κ³΅κ²©μžκ°€ μ•…μ˜μ μΈ μ½”λ“œλ₯Ό req.body.preTax, req.body.afterTax, req.body.roth에 μ‚½μž…ν•˜μ—¬ μ„œλ²„μ—μ„œ 싀행될 수 μžˆμŠ΅λ‹ˆλ‹€. μ΄λŠ” μ‹œμŠ€ν…œ λͺ…λ Ήμ–΄ μ‹€ν–‰, 데이터 유좜, μ„œλΉ„μŠ€ κ±°λΆ€ λ“±μ˜ μ‹¬κ°ν•œ λ³΄μ•ˆ 문제λ₯Ό μ΄ˆλž˜ν•  수 μžˆμŠ΅λ‹ˆλ‹€.

πŸ›  Recommended Fix

eval()을 μ‚¬μš©ν•˜μ§€ μ•Šκ³ , μ•ˆμ „ν•œ λ°©λ²•μœΌλ‘œ μž…λ ₯을 μ²˜λ¦¬ν•΄μ•Ό ν•©λ‹ˆλ‹€. 숫자 μž…λ ₯의 경우 parseInt() λ˜λŠ” parseFloat()λ₯Ό μ‚¬μš©ν•˜μ—¬ λ¬Έμžμ—΄μ„ 숫자둜 λ³€ν™˜ν•˜λŠ” 것이 μ’‹μŠ΅λ‹ˆλ‹€.

πŸ“Ž References

parseInt() λŒ€μ‹  parseFloat()λ₯Ό μ‚¬μš©ν•˜μ—¬ μ†Œμˆ˜μ μ΄ ν¬ν•¨λœ μž…λ ₯도 μ²˜λ¦¬ν•  수 μžˆλ„λ‘ ν•˜μ˜€μŠ΅λ‹ˆλ‹€. ν•„μš”μ— 따라 parseInt()둜 λ³€κ²½ν•  수 μžˆμŠ΅λ‹ˆλ‹€.

πŸ—‚οΈ 2. index.js

πŸ”Ž SAST Analysis Summary

2-1. [Vulnerability] Open Redirect

  • #️⃣ Line: 72
  • πŸ›‘οΈ Severity: WARNING
  • πŸ”– CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
  • πŸ”— Reference: https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html
  • ✍️ Message: The application redirects to a URL specified by user-supplied input req that is not validated. This could redirect users to malicious locations. Consider using an allow-list approach to validate URLs, or warn users they are being redirected to a third-party website.

πŸ€– LLM Analysis Summary

🐞 Vulnerability Description

  • μ‚¬μš©μžκ°€ μ œκ³΅ν•œ μž…λ ₯값인 req.query.url을 톡해 λ¦¬λ‹€μ΄λ ‰μ…˜μ„ μˆ˜ν–‰ν•˜λŠ” 방식은 κ²€μ¦λ˜μ§€ μ•Šμ€ URL둜의 λ¦¬λ‹€μ΄λ ‰μ…˜μ„ ν—ˆμš©ν•˜μ—¬ μ•…μ˜μ μΈ μ‚¬μ΄νŠΈλ‘œ μ‚¬μš©μžλ₯Ό μœ λ„ν•  수 μžˆλŠ” 취약점이 μžˆμŠ΅λ‹ˆλ‹€.

⚠️ Potential Risks

  • κ³΅κ²©μžλŠ” μ•…μ˜μ μΈ URL을 μ‚½μž…ν•˜μ—¬ μ‚¬μš©μžλ₯Ό ν”Όμ‹± μ‚¬μ΄νŠΈλ‘œ μœ λ„ν•˜κ±°λ‚˜, μ•…μ„± μ½”λ“œκ°€ ν¬ν•¨λœ μ‚¬μ΄νŠΈλ‘œ λ¦¬λ‹€μ΄λ ‰μ…˜ν•  수 μžˆμŠ΅λ‹ˆλ‹€. μ΄λŠ” μ‚¬μš©μž 정보 유좜 및 λ³΄μ•ˆ μ‚¬κ³ λ‘œ μ΄μ–΄μ§ˆ 수 μžˆμŠ΅λ‹ˆλ‹€.

πŸ›  Recommended Fix

  • ν—ˆμš©λœ URL λͺ©λ‘(allow-list)을 μ‚¬μš©ν•˜μ—¬ λ¦¬λ‹€μ΄λ ‰μ…˜ν•  URL을 κ²€μ¦ν•˜κ±°λ‚˜, μ‚¬μš©μžκ°€ μ™ΈλΆ€ μ‚¬μ΄νŠΈλ‘œ λ¦¬λ‹€μ΄λ ‰μ…˜λ  λ•Œ κ²½κ³  λ©”μ‹œμ§€λ₯Ό ν‘œμ‹œν•˜μ—¬ μ‚¬μš©μžκ°€ 이λ₯Ό 인지할 수 μžˆλ„λ‘ ν•©λ‹ˆλ‹€.

πŸ“Ž References

  • μœ„ μˆ˜μ •μ—μ„œλŠ” ν—ˆμš©λœ URL λͺ©λ‘μ„ μ‚¬μš©ν•˜μ—¬ λ¦¬λ‹€μ΄λ ‰μ…˜ν•  URL을 κ²€μ¦ν•˜λŠ” 방식을 λ„μž…ν–ˆμŠ΅λ‹ˆλ‹€. ν•„μš”μ— 따라 ν—ˆμš©λœ URL λͺ©λ‘μ„ μ—…λ°μ΄νŠΈν•˜μ—¬ μ‚¬μš©ν•  수 μžˆμŠ΅λ‹ˆλ‹€.

πŸ—‚οΈ 3. server.js

πŸ”Ž SAST Analysis Summary

3-1. [Vulnerability] Cryptographic Issues

  • #️⃣ Lines: 78 ~ 102
  • πŸ›‘οΈ Severity: WARNING
  • πŸ”– CWE-522: Insufficiently Protected Credentials
  • πŸ”— Reference: https://owasp.org/Top10/A04_2021-Insecure_Design
  • ✍️ Message: Don’t use the default session cookie name Using the default session cookie name can open your app to attacks. The security issue posed is similar to X-Powered-By: a potential attacker can use it to fingerprint the server and target attacks accordingly.

3-2. [Vulnerability] Cryptographic Issues

  • #️⃣ Lines: 78 ~ 102
  • πŸ›‘οΈ Severity: WARNING
  • πŸ”– CWE-522: Insufficiently Protected Credentials
  • πŸ”— Reference: https://owasp.org/Top10/A04_2021-Insecure_Design
  • ✍️ Message: Default session middleware settings: domain not set. It indicates the domain of the cookie; use it to compare against the domain of the server in which the URL is being requested. If they match, then check the path attribute next.

3-3. [Vulnerability] Cryptographic Issues

  • #️⃣ Lines: 78 ~ 102
  • πŸ›‘οΈ Severity: WARNING
  • πŸ”– CWE-522: Insufficiently Protected Credentials
  • πŸ”— Reference: https://owasp.org/Top10/A04_2021-Insecure_Design
  • ✍️ Message: Default session middleware settings: expires not set. Use it to set expiration date for persistent cookies.

3-4. [Vulnerability] Cryptographic Issues

  • #️⃣ Lines: 78 ~ 102
  • πŸ›‘οΈ Severity: WARNING
  • πŸ”– CWE-522: Insufficiently Protected Credentials
  • πŸ”— Reference: https://owasp.org/Top10/A04_2021-Insecure_Design
  • ✍️ Message: Default session middleware settings: httpOnly not set. It ensures the cookie is sent only over HTTP(S), not client JavaScript, helping to protect against cross-site scripting attacks.

3-5. [Vulnerability] Cryptographic Issues

  • #️⃣ Lines: 78 ~ 102
  • πŸ›‘οΈ Severity: WARNING
  • πŸ”– CWE-522: Insufficiently Protected Credentials
  • πŸ”— Reference: https://owasp.org/Top10/A04_2021-Insecure_Design
  • ✍️ Message: Default session middleware settings: path not set. It indicates the path of the cookie; use it to compare against the request path. If this and domain match, then send the cookie in the request.

3-6. [Vulnerability] Cryptographic Issues

  • #️⃣ Lines: 78 ~ 102
  • πŸ›‘οΈ Severity: WARNING
  • πŸ”– CWE-522: Insufficiently Protected Credentials
  • πŸ”— Reference: https://owasp.org/Top10/A04_2021-Insecure_Design
  • ✍️ Message: Default session middleware settings: secure not set. It ensures the browser only sends the cookie over HTTPS.

πŸ€– LLM Analysis Summary

🐞 Vulnerability Description

  • κΈ°λ³Έ μ„Έμ…˜ 미듀웨어 μ„€μ •μ—μ„œ domain, expires, httpOnly, path, secure 속성이 μ„€μ •λ˜μ§€ μ•Šμ•˜μŠ΅λ‹ˆλ‹€. 이 속성듀은 μΏ ν‚€μ˜ λ³΄μ•ˆκ³Ό κ΄€λ ¨λœ μ€‘μš”ν•œ μ„€μ •μž…λ‹ˆλ‹€.
  • κΈ°λ³Έ μ„Έμ…˜ μΏ ν‚€ 이름을 μ‚¬μš©ν•˜κ³  μžˆμŠ΅λ‹ˆλ‹€. μ΄λŠ” μ„œλ²„λ₯Ό μ‹λ³„ν•˜κ³  곡격을 λͺ©ν‘œλ‘œ 삼을 수 μžˆλŠ” 정보λ₯Ό μ œκ³΅ν•  수 μžˆμŠ΅λ‹ˆλ‹€.

⚠️ Potential Risks

  • httpOnlyκ°€ μ„€μ •λ˜μ§€ μ•ŠμœΌλ©΄ ν΄λΌμ΄μ–ΈνŠΈ μΈ‘ JavaScriptμ—μ„œ 쿠킀에 μ ‘κ·Όν•  수 μžˆμ–΄ XSS 곡격에 μ·¨μ•½ν•΄μ§ˆ 수 μžˆμŠ΅λ‹ˆλ‹€.
  • secureκ°€ μ„€μ •λ˜μ§€ μ•ŠμœΌλ©΄ HTTPSλ₯Ό ν†΅ν•΄μ„œλ§Œ μΏ ν‚€κ°€ μ „μ†‘λ˜μ§€ μ•Šμ•„ μ€‘κ°„μž 곡격에 μ·¨μ•½ν•  수 μžˆμŠ΅λ‹ˆλ‹€.
  • domainκ³Ό pathκ°€ μ„€μ •λ˜μ§€ μ•ŠμœΌλ©΄ μΏ ν‚€κ°€ μ˜λ„ν•˜μ§€ μ•Šμ€ λ„λ©”μΈμ΄λ‚˜ κ²½λ‘œμ— 전솑될 수 μžˆμŠ΅λ‹ˆλ‹€.
  • κΈ°λ³Έ μ„Έμ…˜ μΏ ν‚€ 이름을 μ‚¬μš©ν•˜λ©΄ μ„œλ²„μ˜ μœ ν˜•μ„ μ‹λ³„ν•˜μ—¬ νŠΉμ • 곡격을 λͺ©ν‘œλ‘œ 삼을 수 μžˆμŠ΅λ‹ˆλ‹€.

πŸ›  Recommended Fix

  • httpOnly, secure, domain, path, expires 속성을 적절히 μ„€μ •ν•˜μ—¬ μΏ ν‚€μ˜ λ³΄μ•ˆμ„ κ°•ν™”ν•©λ‹ˆλ‹€.
  • μ„Έμ…˜ μΏ ν‚€ 이름을 기본값이 μ•„λ‹Œ λ‹€λ₯Έ μ΄λ¦„μœΌλ‘œ μ„€μ •ν•©λ‹ˆλ‹€.

πŸ“Ž References

  • domain 속성은 μ‹€μ œ μ‚¬μš© 쀑인 λ„λ©”μΈμœΌλ‘œ ꡐ체해야 ν•©λ‹ˆλ‹€.
  • secure 속성을 μ‚¬μš©ν•˜λ €λ©΄ HTTPS μ„œλ²„κ°€ ν•„μš”ν•©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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