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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•˜μ§€λ§Œ, μ‚¬μš©μž μž…λ ₯이 포함될 경우 μ½”λ“œ μΈμ μ…˜ 곡격에 μ·¨μ•½ν•©λ‹ˆλ‹€. 이둜 인해 μ•…μ˜μ μΈ μ‚¬μš©μžκ°€ μž„μ˜μ˜ μ½”λ“œλ₯Ό μ‹€ν–‰ν•  수 μžˆλŠ” μœ„ν—˜μ΄ μžˆμŠ΅λ‹ˆλ‹€.

⚠️ Potential Risks

  • κ³΅κ²©μžλŠ” req.body.preTax, req.body.afterTax, req.body.roth에 μ•…μ˜μ μΈ μ½”λ“œλ₯Ό μ‚½μž…ν•˜μ—¬ μ„œλ²„μ—μ„œ μž„μ˜μ˜ JavaScript μ½”λ“œλ₯Ό μ‹€ν–‰ν•  수 μžˆμŠ΅λ‹ˆλ‹€. μ΄λŠ” μ‹œμŠ€ν…œ λͺ…λ Ήμ–΄ μ‹€ν–‰, 데이터 유좜, μ„œλΉ„μŠ€ κ±°λΆ€ 곡격 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 λŒ€μ²΄ 방법인 parseInt() λ˜λŠ” parseFloat()λ₯Ό μ‚¬μš©ν•˜μ—¬ λ¬Έμžμ—΄μ„ 숫자둜 λ³€ν™˜ν•©λ‹ˆλ‹€. 이λ₯Ό 톡해 μ‚¬μš©μž μž…λ ₯을 μ•ˆμ „ν•˜κ²Œ μ²˜λ¦¬ν•  수 μžˆμŠ΅λ‹ˆλ‹€.

πŸ“Ž References

  • parseFloat()λŠ” λΆ€λ™μ†Œμˆ˜μ  숫자λ₯Ό μ²˜λ¦¬ν•˜λŠ” 데 μ ν•©ν•˜λ©°, parseInt()λŠ” μ •μˆ˜λ‘œ λ³€ν™˜ν•  λ•Œ μ‚¬μš©λ©λ‹ˆλ‹€. μž…λ ₯κ°’μ˜ νŠΉμ„±μ— 따라 μ μ ˆν•œ λ³€ν™˜ ν•¨μˆ˜λ₯Ό μ„ νƒν•˜μ„Έμš”.

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

Open Redirect 취약점은 μ‚¬μš©μžκ°€ μ œκ³΅ν•œ μž…λ ₯을 톡해 μ• ν”Œλ¦¬μΌ€μ΄μ…˜μ΄ μ‹ λ’°ν•  수 μ—†λŠ” μ‚¬μ΄νŠΈλ‘œ λ¦¬λ””λ ‰μ…˜λ  수 μžˆλŠ” λ¬Έμ œμž…λ‹ˆλ‹€. 이 경우, req.query.url을 톡해 μ‚¬μš©μžκ°€ μ œκ³΅ν•œ URL둜 λ¦¬λ””λ ‰μ…˜ν•˜κ³  μžˆμŠ΅λ‹ˆλ‹€.

⚠️ Potential Risks

κ³΅κ²©μžκ°€ μ•…μ˜μ μΈ URL을 μ‚½μž…ν•˜μ—¬ μ‚¬μš©μžλ₯Ό ν”Όμ‹± μ‚¬μ΄νŠΈλ‚˜ μ•…μ„± μ‚¬μ΄νŠΈλ‘œ μœ λ„ν•  수 μžˆμŠ΅λ‹ˆλ‹€. μ΄λŠ” μ‚¬μš©μžμ—κ²Œ μ‹¬κ°ν•œ λ³΄μ•ˆ μœ„ν—˜μ„ μ΄ˆλž˜ν•  수 μžˆμŠ΅λ‹ˆλ‹€.

πŸ›  Recommended Fix

μ‚¬μš©μž μž…λ ₯을 기반으둜 λ¦¬λ””λ ‰μ…˜μ„ μˆ˜ν–‰ν•  λ•ŒλŠ” ν—ˆμš© λͺ©λ‘(allow-list)을 μ‚¬μš©ν•˜μ—¬ μ‹ λ’°ν•  수 μžˆλŠ” URL만 λ¦¬λ””λ ‰μ…˜ν•˜λ„λ‘ ν•΄μ•Ό ν•©λ‹ˆλ‹€. λ˜ν•œ, μ‚¬μš©μžκ°€ μ™ΈλΆ€ μ‚¬μ΄νŠΈλ‘œ λ¦¬λ””λ ‰μ…˜λ  경우 κ²½κ³  λ©”μ‹œμ§€λ₯Ό ν‘œμ‹œν•˜λŠ” 것도 κ³ λ €ν•  수 μžˆμŠ΅λ‹ˆλ‹€.

πŸ“Ž References

μœ„ μˆ˜μ •μ—μ„œλŠ” ν—ˆμš© λͺ©λ‘(allow-list) λ°©μ‹μœΌλ‘œ μ‹ λ’°ν•  수 μžˆλŠ” URL만 λ¦¬λ””λ ‰μ…˜ν•˜λ„λ‘ ν•˜μ˜€μŠ΅λ‹ˆλ‹€. ν•„μš”μ— 따라 ν—ˆμš© λͺ©λ‘μ— μΆ”κ°€ν•  URL을 μ—…λ°μ΄νŠΈν•  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‹€. μ΄λŸ¬ν•œ 속성듀은 μΏ ν‚€μ˜ λ³΄μ•ˆκ³Ό μœ νš¨μ„±μ„ 보μž₯ν•˜λŠ” 데 μ€‘μš”ν•œ 역할을 ν•©λ‹ˆλ‹€.
  • κΈ°λ³Έ μ„Έμ…˜ μΏ ν‚€ 이름을 μ‚¬μš©ν•˜λŠ” 것은 μ„œλ²„λ₯Ό μ‹λ³„ν•˜κ³  곡격을 κ³„νšν•˜λŠ” 데 μ•…μš©λ  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•  수 μžˆμŠ΅λ‹ˆλ‹€.
  • secureκ°€ μ„€μ •λ˜μ§€ μ•ŠμœΌλ©΄ HTTPSκ°€ μ•„λ‹Œ HTTPλ₯Ό 톡해 μΏ ν‚€κ°€ 전솑될 수 μžˆμ–΄ μ€‘κ°„μž 곡격에 λ…ΈμΆœλ  수 μžˆμŠ΅λ‹ˆλ‹€.
  • expiresκ°€ μ„€μ •λ˜μ§€ μ•ŠμœΌλ©΄ μΏ ν‚€κ°€ μ„Έμ…˜ μ’…λ£Œ μ‹œκΉŒμ§€ μœ νš¨ν•˜μ—¬ λΆˆν•„μš”ν•˜κ²Œ 였랜 μ‹œκ°„ λ™μ•ˆ μœ μ§€λ  수 μžˆμŠ΅λ‹ˆλ‹€.
  • domainκ³Ό pathκ°€ μ„€μ •λ˜μ§€ μ•ŠμœΌλ©΄ μΏ ν‚€κ°€ λΆˆν•„μš”ν•˜κ²Œ 넓은 λ²”μœ„μ—μ„œ μ‚¬μš©λ  수 μžˆμŠ΅λ‹ˆλ‹€.
  • κΈ°λ³Έ μ„Έμ…˜ μΏ ν‚€ 이름을 μ‚¬μš©ν•˜λ©΄ μ„œλ²„λ₯Ό μ‹λ³„ν•˜μ—¬ 곡격에 μ•…μš©λ  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‚€μ˜ 이름을 κΈ°λ³Έκ°’μ—μ„œ λ³€κ²½ν•˜μ—¬ μ„œλ²„ 식별을 μ–΄λ ΅κ²Œ ν•©λ‹ˆλ‹€.

πŸ“Ž References

  • domain 속성은 μ‹€μ œ μ‚¬μš© ν™˜κ²½μ— 맞게 μ„€μ •ν•΄μ•Ό ν•©λ‹ˆλ‹€. μ˜ˆμ‹œμ—μ„œλŠ” 'example.com'으둜 μ„€μ •ν–ˆμœΌλ‚˜ μ‹€μ œ λ„λ©”μΈμœΌλ‘œ λ³€κ²½ν•΄μ•Ό ν•©λ‹ˆλ‹€.
  • secure 속성을 μ‚¬μš©ν•˜λ €λ©΄ HTTPS μ„œλ²„λ₯Ό μ„€μ •ν•΄μ•Ό 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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