fix(noema): fail closed at the credential egress boundary - #1279
fix(noema): fail closed at the credential egress boundary#1279seonghobae wants to merge 8 commits into
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📝 WalkthroughWalkthroughNoema의 자격증명 요청이 사전 검증된 DNS 주소에 연결되도록 변경되었습니다. 비루프백 엔드포인트는 HTTPS와 전역 유니캐스트 주소를 요구합니다. 리디렉션과 과도한 응답을 차단하고, DNS 변경을 요청 후 다시 확인합니다. ChangesNoema 자격증명 이그레스 검증
Estimated code review effort: 4 (Complex) | ~60 minutes Merge Risk: 🔵 Low · up to Runtime protections remain intact, but the boundary documentation should accurately describe the exact-origin loopback exception before merge. Sequence Diagram(s)sequenceDiagram
participant call_llm
participant validate_endpoint
participant PinnedHTTPHandler
participant DNSResolver
participant LLMEndpoint
call_llm->>validate_endpoint: 모델 URL 검증
validate_endpoint->>DNSResolver: DNS 주소 조회
DNSResolver-->>validate_endpoint: 검증된 전역 유니캐스트 주소
call_llm->>PinnedHTTPHandler: 주소와 호스트명 전달
PinnedHTTPHandler->>LLMEndpoint: 고정 주소로 HTTPS 요청
LLMEndpoint-->>PinnedHTTPHandler: 최대 1 MiB 응답
PinnedHTTPHandler->>DNSResolver: 응답 후 DNS 재조회
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 56.86% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 102 functions across 6 files. (2 skipped: 2 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Pull request overview
OpenCode could not approve from deterministic current-head evidence because GitHub Checks have failed.
Findings
1. HIGH Current-head GitHub Checks - Fix failed required checks before approval
- Problem: Failed same-head checks remain for
b19c5b452cf53a5b5a85d9805efaa1899cf0a04b. - Root cause: The model-unavailable evidence fallback is allowed only when peer GitHub Checks are complete and clean.
- Fix: Read and fix the failed check logs below, then rerun the current-head checks.
- Regression test: Keep the model-unavailable fallback gated on an empty failed-check rollup.
Failed checks:
- Strix Security Scan/strix: FAILURE (https://github.com/ContextualWisdomLab/.github/actions/runs/32661188447/job/97250595093)
- Strix Security Scan/strix: failure (https://github.com/ContextualWisdomLab/.github/actions/runs/32661188447/job/97250595093)
Changed-File Evidence Map
flowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file: CHANGELOG.md"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file: CHANGELOG.md"]
R1 --> V1["required checks"]
Evidence --> S2["Docs: noema-credential-egress-boundary.md"]
S2 --> I2["operator or user guidance"]
I2 --> R2["Review risk: Docs: noema-credential-egress-boundary.md"]
R2 --> V2["docs review"]
Evidence --> S3["CI script: noema_review_gate.py"]
S3 --> I3["review and security gate shell path"]
I3 --> R3["Review risk: CI script: noema_review_gate.py"]
R3 --> V3["bash -n plus Strix self-test"]
Evidence --> S4["Test (3 files)"]
S4 --> I4["regression suite"]
I4 --> R4["Review risk: Test (3 files)"]
R4 --> V4["targeted test run"]
OpenCode Review Overview
Pull request overviewOpenCode could not approve from deterministic current-head evidence because GitHub Checks have failed. Findings1. HIGH Current-head GitHub Checks - Fix failed required checks before approval
Failed checks:
Changed-File Evidence Mapflowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file: CHANGELOG.md"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file: CHANGELOG.md"]
R1 --> V1["required checks"]
Evidence --> S2["Docs: noema-credential-egress-boundary.md"]
S2 --> I2["operator or user guidance"]
I2 --> R2["Review risk: Docs: noema-credential-egress-boundary.md"]
R2 --> V2["docs review"]
Evidence --> S3["CI script: noema_review_gate.py"]
S3 --> I3["review and security gate shell path"]
I3 --> R3["Review risk: CI script: noema_review_gate.py"]
R3 --> V3["bash -n plus Strix self-test"]
Evidence --> S4["Test (3 files)"]
S4 --> I4["regression suite"]
I4 --> R4["Review risk: Test (3 files)"]
R4 --> V4["targeted test run"]
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Exact-head formal review request for 92c8b95. Inspect the complete current diff, especially Noema credential egress boundary, fail-closed behavior, and secret handling. Publish a substantive Reviews API verdict tied only to this exact SHA, with changed-file walkthrough, security/control-plane impact, test gaps, and residual uncertainty. Do not reuse predecessor evidence. @opencode-agent |
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Exact-head current identity is |
92c8b95 to
2adc8c4
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Exact-head validation after fixing the Devin IPv6 finding:
The remaining TCP_NODELAY note is informational and does not affect credential routing or correctness; it is not being expanded into this bounded fix. Hosted checks and a fresh independent review are still pending, so this PR is not being merged or force-merged. |
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Pull request overview
OpenCode could not approve from deterministic current-head evidence because GitHub Checks have failed.
Findings
1. HIGH Current-head GitHub Checks - Fix failed required checks before approval
- Problem: Failed same-head checks remain for
721a36f24616343029a291f02db32610f470a884. - Root cause: The model-unavailable evidence fallback is allowed only when peer GitHub Checks are complete and clean.
- Fix: Read and fix the failed check logs below, then rerun the current-head checks.
- Regression test: Keep the model-unavailable fallback gated on an empty failed-check rollup.
Failed checks:
- Strix Security Scan/strix: FAILURE (https://github.com/ContextualWisdomLab/.github/actions/runs/32723348685/job/97419259259)
- Strix Security Scan/strix: failure (https://github.com/ContextualWisdomLab/.github/actions/runs/32723348685/job/97419259259)
Changed-File Evidence Map
flowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file: CHANGELOG.md"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file: CHANGELOG.md"]
R1 --> V1["required checks"]
Evidence --> S2["Docs: noema-credential-egress-boundary.md"]
S2 --> I2["operator or user guidance"]
I2 --> R2["Review risk: Docs: noema-credential-egress-boundary.md"]
R2 --> V2["docs review"]
Evidence --> S3["CI script: noema_review_gate.py"]
S3 --> I3["review and security gate shell path"]
I3 --> R3["Review risk: CI script: noema_review_gate.py"]
R3 --> V3["bash -n plus Strix self-test"]
Evidence --> S4["Test (3 files)"]
S4 --> I4["regression suite"]
I4 --> R4["Review risk: Test (3 files)"]
R4 --> V4["targeted test run"]
…ain-replacement-20260824 # Conflicts: # CHANGELOG.md # scripts/ci/noema_review_gate.py
Resolved the stale merge conflict against
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| class PinnedHTTPHandler(urllib.request.HTTPHandler): | ||
| """urllib handler that uses validated numeric destinations for HTTP requests.""" | ||
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| def __init__(self, addresses: frozenset[IpAddress]) -> None: | ||
| """Bind this handler to one prevalidated DNS result set.""" | ||
| super().__init__() | ||
| self._addresses = addresses | ||
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| def http_open(self, req: urllib.request.Request) -> Any: | ||
| """Open an HTTP request without resolving its hostname again.""" | ||
| return self.do_open( | ||
| lambda host, **kwargs: PinnedHTTPConnection( | ||
| host, validated_addresses=self._addresses, **kwargs | ||
| ), | ||
| req, | ||
| ) | ||
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| class PinnedHTTPSHandler(urllib.request.HTTPSHandler): | ||
| """urllib handler that pins TCP while preserving HTTPS hostname verification.""" | ||
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| def __init__(self, addresses: frozenset[IpAddress]) -> None: | ||
| """Bind this handler to one prevalidated DNS result set.""" | ||
| super().__init__() | ||
| self._addresses = addresses | ||
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| def https_open(self, req: urllib.request.Request) -> Any: | ||
| """Open HTTPS using the validated address set and original URL hostname.""" | ||
| return self.do_open( | ||
| lambda host, **kwargs: PinnedHTTPSConnection( | ||
| host, validated_addresses=self._addresses, **kwargs | ||
| ), | ||
| req, | ||
| context=self._context, | ||
| ) |
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📝 Info: Validated transport remains internally consistent
Custom handlers replace urllib defaults and pin sockets to validated addresses. TLS still verifies the original hostname, while the exact loopback sidecar remains reachable.
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| def _socket_target(address: IpAddress, port: int) -> tuple[str, int]: | ||
| """Return a socket destination that contains only a validated IP literal.""" | ||
| return (str(address), port) |
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📝 Info: IPv6 destination shape is valid
socket.create_connection accepts a two-element host-and-port pair for IPv6 literals. The four-element form applies to lower-level socket addresses, not this API.
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Attempted merge, aborted — this needs a rebase by someone with full context, not a mechanical conflict resolutionBranch is The
Neither side is a stale copy of the other; Suggested path forward: this PR's DNS-pinning/proxy-blocking/size-bound/TOCTOU-recheck logic should be re-applied as a fresh diff against Local resolution state (3 of 4 conflicts) was not pushed since the 4th makes the branch non-buildable either way; happy to push the partial resolution as a starting point if that's useful, otherwise leaving this for a dedicated follow-up. Generated by Claude Code |
…-20260824) 13 conflict blocks across four files. Both sides hardened the same function independently - this branch at the credential egress boundary, main at output validation and gateway telemetry (#1477) - so the resolution is a union, not a choice, except where the two guards overlap. THE OVERLAP, resolved in the branch's favour with evidence: main's reject_private_llm_url has a fail-OPEN path - 'except socket.gaierror: return' - and does not require HTTPS for non-loopback targets, does not reject userinfo, and denylists special addresses instead of requiring globally routable unicast. The branch's validate_endpoint is stricter on every one of those axes and fails closed on DNS failure, which is this PR's stated subject. So call_llm now calls validate_endpoint only; reject_private_llm_url stays defined because two tests exercise it directly and still pass. That makes main's four call_llm-level 'URL cannot target internal IP addresses' assertions wrong and the branch's replacements right - which is exactly what the branch's side of those four conflict blocks already said. PORTED onto main's structure: - opener gains ProxyHandler({}) + PinnedHTTPHandler/PinnedHTTPSHandler in front of main's NoRedirectHandler - response.read(MAX_LLM_RESPONSE_BYTES + 1) with the over-limit check - post-request DNS identity re-check before decoding - constants and the pinned-connection classes merged alongside main's JSON bound helpers (disjoint symbol sets, so a plain union) NOT PORTED, on policy: The branch also passes timeout=120 to opener.open and its oracle asserts 'timeout == 120'. CLAUDE.md states model-path timeouts are policy-fixed, and #1889/#1890/#1892 each added such a cap and were all reverted (#1891, #1895); main's call_llm docstring says it 'carries no fixed model wall-clock deadline'. The assertion was translated to 'timeout is None' with that citation in a comment. The byte cap is the bound that test really needs. TEST FIXTURES updated because the behaviour changed, not to make red go green: - the branch's oracle called the pre-#1477 five-argument call_llm (11 sites) and did not stub validate_substantive_verdict, which main added; both translated, the latter the same way main's own call_llm tests do it - fail-closed DNS means an unresolvable *.example.test aborts a test before its own assertion, so tests/test_noema_review_gate.py and tests/test_noema_repair_attempt_telemetry.py get an autouse fixture that resolves non-literal hosts and leaves literal addresses to the real resolver, so the internal-address tests keep their meaning - the byte-capped read passes an argument, so nine response doubles became read(self, _limit=None) Evidence: - uvx ruff check --select F821 scripts/ci tests: All checks passed - full suite, branch head 3feb583 (unmerged): 1931 passed, 0 failed - full suite, this merge: 2938 passed, 0 failed - the branch's own oracle tests/test_noema_endpoint_boundary.py: 33 passed (10 before the signature translation) - main's noema tests: 121 passed; telemetry contracts: 23 passed - negative controls: removing the post-request DNS re-check fails test_public_endpoint_requires_https_and_stable_global_dns; removing the byte cap fails test_response_body_is_bounded_before_json_decoding - both by name - coverage: TOTAL 100%; interrogate: PASSED (minimum 100.0%) GAP FOUND, left for the author: removing PinnedHTTPHandler/PinnedHTTPSHandler from the opener changes no test result (33 still pass). The pinned classes are covered only by direct unit tests; nothing asserts they are installed in call_llm's opener, so a future edit could unwire DNS pinning silently. This is pre-existing in the PR, not introduced here. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Actionable comments posted: 1
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Inline comments:
In `@docs/doctoring/noema-credential-egress-boundary.md`:
- Around line 12-16: Update the loopback exception wording in the documentation
to state that plaintext HTTP is allowed only for the exact configured
contextual-orchestrator sidecar origin, including matching scheme, host, and
port, with literal 127.0.0.1 or ::1 and loopback resolver results as applicable.
Correct the related “two literal loopback sidecar addresses” wording while
preserving the existing scope around provider routing and model handling.
After applying the fix, consider running `coderabbit review --agent` for local
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Fix all unresolved CodeRabbit comments on this PR:
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ℹ️ Review info
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Configuration used: Organization UI
Review profile: CHILL
Plan: Team
Run ID: 06b7432d-9106-4424-88af-02c3358d751a
📒 Files selected for processing (8)
CHANGELOG.mddocs/doctoring/noema-credential-egress-boundary.mdscripts/ci/noema_review_gate.pytests/test_noema_endpoint_boundary.pytests/test_noema_repair_attempt_telemetry.pytests/test_noema_review_gate.pytests/test_noema_review_orchestrator_ssrf.pytests/test_repository_branch_coverage_review_schedulers.py
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CodeRabbit review on #1279: the doc said any literal 127.0.0.1/::1 endpoint may use HTTP when every resolver result is loopback, but is_allowed_orchestrator_sidecar_url() also requires the URL's scheme, host, and port to match the configured CONTEXTUAL_ORCHESTRATOR_BASE_URL origin exactly (test_non_sidecar_loopback_port_requires_https_even_with_sidecar_configured confirms a loopback literal on a non-matching port still needs HTTPS). Narrow the wording to match the implementation; no code or test change. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01KPmJErfkcHer4UVEgrQxUX
The previous commit on this path accidentally wrote a placeholder string instead of the intended file content. This restores the full file with the intended CodeRabbit-driven wording fix applied (loopback HTTP exception is scoped to the exact configured CONTEXTUAL_ORCHESTRATOR_BASE_URL origin, not any loopback literal). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01KPmJErfkcHer4UVEgrQxUX
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Co-Authored-By: Claude Sonnet 5 noreply@anthropic.com Generated by Claude Code |
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Correction to my earlier comment, and a real finding: the fix isn't live yetMy earlier comment in this thread overstated what the
This Dispatched an investigation to locate and update the vendoring pin so the merged fix actually takes effect. Will follow up here and on the relevant PR once that lands. Not re-running this job again yet — a rerun now would still use the stale pin and tell us nothing new. Co-Authored-By: Claude Sonnet 5 noreply@anthropic.com Generated by Claude Code |
seonghobae
added
bug
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2 participants
Outcome
Replaces the conflicted and scope-polluted #930 with a clean current-main change.
This PR does not import contextual-orchestrator, alter provider routing, change model selection, or modify model parameters.
Evidence
Supersedes #930. Preserves the trusted loopback consumer contract from #1120.
Summary by CodeRabbit
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