🛡️ Sentinel: [CRITICAL] Fix DoS in hmac.compare_digest - #365
Conversation
구현 내용: Authorization 헤더 검증 시 문자열을 UTF-8 바이트로 인코딩한 후 비교하도록 수정. 해결하는 문제: 사용자가 Authorization 헤더에 Non-ASCII 문자를 포함할 경우 hmac.compare_digest가 TypeError를 발생시켜 500 Internal Server Error (DoS)를 유발하는 문제를 해결. 성능/영향: 잘못된 요청에 대해 안전하게 401 Unauthorized를 반환하며 서버 다운을 방지. 측정/검증 방법: 명시적인 바이트 리터럴로 Non-ASCII 헤더를 전송하여 401 응답이 반환되는지 확인하는 테스트 케이스 추가 및 100% 테스트 커버리지 유지.
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Pull request overview
OpenCode cannot approve yet because required coverage evidence did not pass.
Review outcome
1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence
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Problem: The required coverage-evidence job result was
failure, so OpenCode cannot establish approval sufficiency for this head. -
Root cause: Automated approval is only valid when the same-head coverage-evidence job proves supported repository test suites passed and configured docstring gates passed or were advisory, or reports not applicable because no supported source files or package manifests exist. Missing, failed, skipped, unavailable, or unsupported-tooling test evidence is a blocker.
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Fix: Install or configure the repository test/docstring evidence tooling when source files or package manifests exist, rerun the current-head coverage-evidence job, and approve only after it reports
successwith required evidence or explicit no-source not-applicable evidence. -
Regression test: Keep the approval branch checking
needs.coverage-evidence.result == successbefore posting APPROVE, and publish REQUEST_CHANGES when coverage-evidence blocker states such as cancelled, skipped, failed, unsupported-tooling, or below-100 evidence are present. -
Result: REQUEST_CHANGES
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Reason: coverage-evidence result was
failure, so required test/docstring evidence was not proven for current headebe185d4bacdd38d427323fd87bd6528aba7510d. -
Head SHA:
ebe185d4bacdd38d427323fd87bd6528aba7510d -
Workflow run: 29629200719
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Workflow attempt: 1
Coverage evidence
Coverage Decision
- Result: FAIL
- Test evidence: not proven passing
- Docstring evidence: not proven passing when configured
- Failure count: 1
Changed-File Evidence Map
flowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (2 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (2 files)"]
R1 --> V1["required checks"]
Evidence --> S2["Test: test_auth.py"]
S2 --> I2["regression suite"]
I2 --> R2["Review risk: Test: test_auth.py"]
R2 --> V2["targeted test run"]
OpenCode Review Overview
Pull request overviewOpenCode cannot approve yet because required coverage evidence did not pass. Review outcome1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence
Coverage evidenceCoverage Decision
Changed-File Evidence Mapflowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (2 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (2 files)"]
R1 --> V1["required checks"]
Evidence --> S2["Test: test_auth.py"]
S2 --> I2["regression suite"]
I2 --> R2["Review risk: Test: test_auth.py"]
R2 --> V2["targeted test run"]
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1 participant
🚨 Severity: CRITICAL
💡 Vulnerability: Unhandled TypeError in hmac.compare_digest with non-ASCII headers
🎯 Impact: DoS via 500 Server Error
🔧 Fix: Encode strings to UTF-8 before comparison
✅ Verification: Added test for non-ASCII headers
구현 내용: Authorization 헤더 검증 시 문자열을 UTF-8 바이트로 인코딩한 후 비교하도록 수정.
해결하는 문제: 사용자가 Authorization 헤더에 Non-ASCII 문자를 포함할 경우 hmac.compare_digest가 TypeError를 발생시켜 500 Internal Server Error (DoS)를 유발하는 문제를 해결.
성능/영향: 잘못된 요청에 대해 안전하게 401 Unauthorized를 반환하며 서버 다운을 방지.
측정/검증 방법: 명시적인 바이트 리터럴로 Non-ASCII 헤더를 전송하여 401 응답이 반환되는지 확인하는 테스트 케이스 추가 및 100% 테스트 커버리지 유지.
PR created automatically by Jules for task 12341246838586248872 started by @seonghobae