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πŸ›‘οΈ Sentinel: [HIGH] JSON DoS 취약점 ν•΄κ²° - #329

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sentinel-json-dos-fix-1465800490202201274
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πŸ›‘οΈ Sentinel: [HIGH] JSON DoS 취약점 ν•΄κ²°#329
seonghobae wants to merge 1 commit into
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sentinel-json-dos-fix-1465800490202201274

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@seonghobae seonghobae commented Jul 27, 2026

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🚨 심각도 (Severity): HIGH
πŸ’‘ 취약점 (Vulnerability): python/fast_mlsirm/report.py의 render_diagnostics_report ν•¨μˆ˜κ°€ JSON νŒŒμΌμ„ 뢈러올 λ•Œ, 파일의 ν¬κΈ°λ‚˜ 쀑첩 κΉŠμ΄μ— λŒ€ν•œ μ œν•œ 없이 파이썬의 ν‘œμ€€ json.loadsλ₯Ό μ‚¬μš©ν•˜κ³  μžˆμ—ˆμŠ΅λ‹ˆλ‹€.
🎯 영ν–₯ (Impact): μ•…μ˜μ μœΌλ‘œ μ‘°μž‘λœ κ±°λŒ€ν•œ 크기 λ˜λŠ” 맀우 κΉŠμ€ 쀑첩 ꡬ쑰λ₯Ό κ°€μ§„ JSON 파일이 μž…λ ₯으둜 μ£Όμ–΄μ§ˆ 경우, λ©”λͺ¨λ¦¬ 고갈 (OOM)μ΄λ‚˜ μž¬κ·€ ν•œλ„ 초과 였λ₯˜κ°€ λ°œμƒν•˜μ—¬ μ„œλΉ„μŠ€ κ±°λΆ€ (DoS) 곡격으둜 μ΄μ–΄μ§ˆ 수 μžˆμŠ΅λ‹ˆλ‹€.
πŸ”§ μˆ˜μ • 사항 (Fix): ν‘œμ€€ json.loads λŒ€μ‹  파일의 크기와 쀑첩 깊이λ₯Ό μ œν•œν•˜μ—¬ μ•ˆμ „ν•˜κ²Œ 역직렬화λ₯Ό μˆ˜ν–‰ν•˜λŠ” _load_json_bounded (fast_mlsirm.io 제곡) μœ ν‹Έλ¦¬ν‹° ν•¨μˆ˜λ₯Ό μ‚¬μš©ν•˜λ„λ‘ μˆ˜μ •ν–ˆμŠ΅λ‹ˆλ‹€. λ˜ν•œ μ‚¬μš©ν•˜μ§€ μ•ŠλŠ” json λͺ¨λ“ˆ importλ₯Ό μ‚­μ œν–ˆμŠ΅λ‹ˆλ‹€.
βœ… 검증 방법 (Verification): λ³€κ²½λœ λͺ¨λ“ˆμ— λŒ€ν•œ 린트 및 ν¬λ§·νŒ… (ruff format, ruff check) 검사λ₯Ό μˆ˜ν–‰ν–ˆμœΌλ©°, ν…ŒμŠ€νŠΈ μ½”λ“œ (uv run pytest tests)λ₯Ό 톡해 λ‘œμ§μ— 이상이 μ—†μŒμ„ ν™•μΈν–ˆμŠ΅λ‹ˆλ‹€.


PR created automatically by Jules for task 1465800490202201274 started by @seonghobae

Summary by CodeRabbit

  • λ³΄μ•ˆ κ°œμ„ 

    • 진단 JSON μ²˜λ¦¬μ— μž…λ ₯ 크기와 쀑첩 깊이 μ œν•œμ„ μ μš©ν•΄ κ³Όλ„ν•˜κ²Œ 큰 μž…λ ₯으둜 μΈν•œ μ„œλΉ„μŠ€ κ±°λΆ€ μœ„ν—˜μ„ μ€„μ˜€μŠ΅λ‹ˆλ‹€.
    • 진단 데이터가 μ˜¬λ°”λ₯Έ 객체 ν˜•μ‹μΈμ§€ ν™•μΈν•œ ν›„ 리포트λ₯Ό μƒμ„±ν•˜λ„λ‘ κ°œμ„ ν–ˆμŠ΅λ‹ˆλ‹€.
  • λ¬Έμ„œ

    • 진단 JSON νŒŒμ‹±κ³Ό κ΄€λ ¨λœ λ³΄μ•ˆ μ£Όμ˜μ‚¬ν•­μ„ μΆ”κ°€ν–ˆμŠ΅λ‹ˆλ‹€.

python/fast_mlsirm/report.pyμ—μ„œ 파일 λ‚΄μš©μ„ 읽어듀여 ν¬κΈ°λ‚˜ κΉŠμ΄μ— λŒ€ν•œ μ œν•œ 없이 json.loads()λ₯Ό μˆ˜ν–‰ν•˜λŠ” 문제λ₯Ό μˆ˜μ •ν–ˆμŠ΅λ‹ˆλ‹€.
이λ₯Ό _load_json_boundedλ₯Ό μ‚¬μš©ν•˜λ„λ‘ λŒ€μ²΄ν•˜μ—¬ λ³΄μ•ˆμ„±μ„ κ°•ν™”ν–ˆμŠ΅λ‹ˆλ‹€.
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Copilot AI review requested due to automatic review settings July 27, 2026 19:00
@coderabbitai

coderabbitai Bot commented Jul 27, 2026

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Review Change Stack

No actionable comments were generated in the recent review. πŸŽ‰

ℹ️ Recent review info
βš™οΈ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 902cabdc-d2c7-4e84-897c-96c7ed43fd69

πŸ“₯ Commits

Reviewing files that changed from the base of the PR and between a3123a2 and 4140b3e.

πŸ“’ Files selected for processing (2)
  • .jules/sentinel.md
  • python/fast_mlsirm/report.py

πŸ“ Walkthrough

Walkthrough

진단 λ³΄κ³ μ„œμ˜ JSON μž…λ ₯ μ²˜λ¦¬κ°€ _load_json_bounded 기반으둜 λ³€κ²½λ˜μ—ˆμŠ΅λ‹ˆλ‹€. κΈ°μ‘΄ payload 객체 검증과 HTML λ Œλ”λ§ 흐름은 μœ μ§€λ˜λ©°, κ΄€λ ¨ DoS λ°©μ§€ 기둝이 μΆ”κ°€λ˜μ—ˆμŠ΅λ‹ˆλ‹€.

Changes

진단 JSON μ•ˆμ „μ„±

Layer / File(s) Summary
λ°”μš΄λ“œ 진단 JSON λ‘œλ”©
python/fast_mlsirm/report.py, .jules/sentinel.md
render_diagnostics_reportκ°€ 전체 νŒŒμΌμ„ 직접 읽고 json.loads둜 νŒŒμ‹±ν•˜λŠ” λŒ€μ‹  _load_json_boundedλ₯Ό μ‚¬μš©ν•˜λ©°, ν•΄λ‹Ή DoS λ°©μ§€ 지침이 sentinel 기둝에 μΆ”κ°€λ˜μ—ˆμŠ΅λ‹ˆλ‹€.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

  • ContextualWisdomLab/fast-mlsirm#299: λ™μΌν•œ 진단 JSON λ°”μš΄λ“œ λ‘œλ”© 및 DoS sentinel 변경을 λ‹€λ£Ήλ‹ˆλ‹€.
  • ContextualWisdomLab/fast-mlsirm#322: render_diagnostics_report의 λ¬΄μ œν•œ JSON νŒŒμ‹±μ„ λ™μΌν•œ λ°©μ‹μœΌλ‘œ κ΅μ²΄ν•©λ‹ˆλ‹€.

Suggested reviewers: copilot

πŸš₯ Pre-merge checks | βœ… 5
βœ… Passed checks (5 passed)
Check name Status Explanation
Description Check βœ… Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check βœ… Passed 제λͺ©μ΄ JSON DoS 취약점 ν•΄κ²°μ΄λΌλŠ” 핡심 변경을 μ •ν™•νžˆ μš”μ•½ν•˜λ©°, λ³€κ²½ λ‚΄μš©κ³Ό μΌμΉ˜ν•©λ‹ˆλ‹€.
Docstring Coverage βœ… Passed No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check βœ… Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check βœ… Passed Check skipped because no linked issues were found for this pull request.
✨ Finishing Touches
πŸ“ Generate docstrings
  • Create stacked PR
  • Commit on current branch
πŸ§ͺ Generate unit tests (beta)
  • Create PR with unit tests
  • Commit unit tests in branch sentinel-json-dos-fix-1465800490202201274

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Pull request overview

This PR hardens render_diagnostics_report against JSON-based denial-of-service by switching to the repo’s bounded JSON loader, preventing untrusted diagnostics files from causing excessive memory use or pathological nesting depth issues.

Changes:

  • Replace unbounded json.loads(Path.read_text(...)) with _load_json_bounded(...) when reading diagnostics JSON.
  • Remove the now-unused json import from python/fast_mlsirm/report.py.
  • Document the JSON parsing DoS lesson/prevention pattern in .jules/sentinel.md.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File Description
python/fast_mlsirm/report.py Uses bounded JSON deserialization for diagnostics report rendering (DoS mitigation).
.jules/sentinel.md Adds a security note documenting the unbounded JSON parsing DoS risk and the recommended mitigation.

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Comment on lines 3 to 7
import hashlib
import json
import math
from .io import _load_json_bounded
from html import escape
from pathlib import Path

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쀑볡 정리: report.py JSON DoS μˆ˜μ •μœΌλ‘œ, 리뷰 λŒ€κΈ° 쀑인 #203 κ³Ό 동일 λŒ€μƒΒ·λ™μΌ μ·¨μ§€μž…λ‹ˆλ‹€. #203 을 λŒ€ν‘œλ‘œ 남기고 λ‹«μŠ΅λ‹ˆλ‹€. ν•„μš” μ‹œ μž¬μ˜€ν”ˆ κ°€λŠ₯ν•©λ‹ˆλ‹€.


Generated by Claude Code

@google-labs-jules

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쀑볡 정리: report.py JSON DoS μˆ˜μ •μœΌλ‘œ, 리뷰 λŒ€κΈ° 쀑인 #203 κ³Ό 동일 λŒ€μƒΒ·λ™μΌ μ·¨μ§€μž…λ‹ˆλ‹€. #203 을 λŒ€ν‘œλ‘œ 남기고 λ‹«μŠ΅λ‹ˆλ‹€. ν•„μš” μ‹œ μž¬μ˜€ν”ˆ κ°€λŠ₯ν•©λ‹ˆλ‹€.


Generated by Claude Code

Understood. Acknowledging that this work is now obsolete and stopping work on this task.

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2 participants