🛡️ Sentinel: [MEDIUM] Fix log injection vulnerabilities in TemporalAnalyzer

[seonghobae]

Preservation / owner-routing status

This generated PR found a valid CWE-117 class threat: attacker-controlled local-audio path text containing CR/LF can forge log-record boundaries. It is not an independent TemporalAnalyzer privacy/source owner and must not merge as written.

Protected product base is develop@314ddeae7b775a4957594b599358c8255617eb2e; this branch is exact f65d132287d134f341a5baec531d9d30544bb043, Open / Draft / mergeable.

Why the generated fix is insufficient

The production delta replaces direct f-string path logging with repr(path_str) and deferred interpolation, but it still emits the selected local path. More importantly, the failure log still passes the original exception object as %s:

logger.error("Failed to analyze audio %s: %s", repr(path_str), e)

A decoder exception whose message contains the attacker-controlled path or CR/LF can therefore reintroduce the same log-forging surface through e. repr(path_str) also retains local-path disclosure that BandScope's canonical temporal privacy contract deliberately removes.

Canonical privacy owner #1055 exact 9d458b5277ba55769f64650f5881a7bb396bd73d is stronger: progress logs use bounded generic context and failure logs expose only type(e).__name__, while preserving the path only in the existing returned analysis payload contract where required. Preservation #1211 already records the same CR/LF finding and explicitly requires a focused attacker-shaped path + decoder-exception regression before canonical adoption.

Single-writer disposition

• Do not merge or extend this branch with a second TemporalAnalyzer implementation.
• .jules/sentinel.md is scanner learning metadata, not product/security runtime authority.
• Do not copy repair(ci): format consolidated supply-chain policy test #1176 formatter or unrelated dependency/governance deltas here.
• The useful finding is already represented by preserve TemporalAnalyzer log-injection finding for canonical privacy owner #1211 and must be absorbed into fix(privacy): redact temporal analysis logs #1055 only after the active BandScope source lane permits it.

The canonical RED must include both (a) CR/LF in an attacker-shaped source path/identifier and (b) a decoder exception containing that source identity/control characters. GREEN must keep #1055's stronger path-free policy: bounded generic context plus exception type, with neither raw/repr() path nor exception text reaching the log sink. caplog/structured-sink assertions must prove no injected record boundary and no source-path disclosure.

Close rule

Keep this PR Draft/open as preservation until the finding/test/contract is fully represented by the canonical privacy successor and normal protected integration verifies that succession. Do not treat this branch's passing tests, scanner-generated description, repr() escaping, predecessor evidence, self-approval, bypass, force-push, destructive rebase, synthetic status, or gate weakening as merge/closure authority.

[google-labs-jules]

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Advanced

Run ID: d978dd10-a38c-422a-8204-cc486b92ba03

📥 Commits

Reviewing files that changed from the base of the PR and between 314ddea and f65d132.

📒 Files selected for processing (2)

• .jules/sentinel.md
• services/analysis-engine/src/bandscope_analysis/temporal/analyzer.py

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

TemporalAnalyzer.analyze의 세 로그 호출을 지연 % 보간 방식으로 변경했습니다. 경로 입력에는 repr()을 적용했습니다. 로그 주입 방지 지침을 문서에 추가했습니다.

Changes

로그 안전성 개선

Layer / File(s)	Summary
안전한 로그 포맷 적용 .jules/sentinel.md, services/analysis-engine/src/bandscope_analysis/temporal/analyzer.py	로그 주입 방지 지침을 추가했습니다. 로딩, 완료, 오류 로그를 지연 % 보간 방식으로 변경했습니다. 경로 입력에는 repr()을 적용했습니다. 분석 로직과 오류 처리는 변경하지 않았습니다.

Priority: ⬇️ Low

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

Change: Bug fix

Merge Risk: ⚪ Minimal · up to f65d1

The logging-only change safely represents the request-derived path, with no demonstrated merge-blocking regression.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files. (1 skipped: 1 …
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	제목은 TemporalAnalyzer의 로그 인젝션 취약점 수정을 명확하게 설명합니다. 변경 사항의 주요 목적과 일치하며 간결합니다.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/log-injection-vulnerabilities-404772855862254541

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