fix: enforce Pingora edge policy for evidence and runtime forms - #2149
fix: enforce Pingora edge policy for evidence and runtime forms#2149seonghobae wants to merge 10 commits into
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📝 WalkthroughWalkthrough문서·라이선스 파일을 콘텐츠 스캔 대상에 포함했습니다. Nginx 패턴의 공백, 따옴표, 경로, sudo 처리를 변경했습니다. Changes콘텐츠 스캔 정책
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Bug fix Suggested reviewers: Merge Risk: 🟡 Moderate · up to Dockerfiles using valid CRLF continuations can bypass the nginx package-install policy, so the rule and regression coverage should be corrected before merge. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
📝 Generate docstrings
🧪 Generate unit tests (beta)
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seonghobae
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Noema LLM review
The change adds 'figures' to documentation directories and allows .png files in paths containing 'evidence' as binary documentation assets, while preserving runtime path protections. Added tests cover these cases and the existing fake-PNG rejection. No blocking issues found.
Reviewed changed lines
scripts/ci/pingora_edge_policy.py:52 (RIGHT): Added 'figures' to documentation directories; consistent with intent and still gated by binary magic and runtime path checks.scripts/ci/pingora_edge_policy.py:235 (RIGHT): Expanded evidence-path exemption to include .png; remains gated by runtime path rule and binary magic check.tests/test_pingora_edge_policy.py:415 (RIGHT): New test verifies that a valid PNG under figures/ is exempted through the end-to-end evaluate_pull_request flow.
Adversarial validation
scripts/ci/pingora_edge_policy.py:52 (RIGHT)falsified: Adding 'figures' to DOCUMENTATION_DIRECTORIES could exempt a runtime artifact (e.g., figures/nginx.conf) from content scanning. — _is_binary_documentation_asset only returns True when the file has a binary magic and _runtime_path_rule(changed.path) is None. A runtime artifact like nginx.conf would either fail magic or be rejected by the runtime path rule.scripts/ci/pingora_edge_policy.py:235 (RIGHT)falsified: Expanding the evidence exemption to .png could allow a crafted PNG with valid magic but embedded Nginx directives to slip through. — The policy treats binary documentation assets as opaque; the comment states they cannot embed interpretable active Nginx runtime artifacts. The magic check ensures valid PNG, and runtime path rules still apply. Content scanning only applies to text files, so the payload is not interpreted.tests/test_pingora_edge_policy.py:415 (RIGHT)falsified: The new test only covers valid PNGs and misses a regression where a PNG without a runtime path rule might still be incorrectly rejected. — The test mocks the API and asserts evaluate_pull_request returns an empty tuple, confirming the exemption works regardless of runtime path because the path is not a runtime artifact. The existing fake-PNG test still verifies rejection for invalid magic.- Residual risk: Low: exemption is narrowly scoped to binary magic PNGs under evidence/figures paths; runtime path rules still apply.
Findings
- No blocking findings.
- Result: APPROVE
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Actionable comments posted: 1
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Inline comments:
In `@scripts/ci/pingora_edge_policy.py`:
- Line 113: Update the nginx_package_install regular expression to allow an
optional carriage return before the newline in Dockerfile line continuations,
and add a regression test covering CRLF continuations for both dnf install and
yum install cases.
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scripts/ci/pingora_edge_policy.pytests/test_pingora_edge_policy.py
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seonghobae
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| suffix = PurePosixPath(changed.path).suffix.lower() | ||
| if suffix == ".png": | ||
| return _is_complete_png(raw) |
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🔍 PDF evidence remains prefix-only
_binary_documentation_evidence_confirms validates PNG and HWPX structures, but accepts any PDF beginning with %PDF-. The description’s structural-validation claim is broader than the implementation.
(Refers to this code)
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Exact-head review finding on f49f93ea3603c872d6cb2cb90fe9bbe0e7e13cc5: the current repair closes quoted image, absolute/sudo command, package-option, continuation, and binary-evidence cases, but it still does not cover Docker/Compose variable indirection. The live Strix execution against .github#2106 produced a concrete counterexample such as ARG NGINX_IMAGE=nginx:... followed by FROM ${NGINX_IMAGE}: the current CONTENT_RULES only match literal nginx at the image/command/package use site, so the indirection is not classified even though it resolves to an active Nginx runtime artifact.
Please keep this in the existing Pingora single-writer lane rather than adding a leaf workaround. Add a realistic RED fixture first for bounded ARG/ENV (and Compose interpolation if this policy claims that surface), then minimally resolve only statically provable local substitutions before applying the existing runtime rules. Unresolved/dynamic substitution at an active runtime sink should fail closed rather than be assumed safe. Preserve the current protections for quoted/absolute/package forms and do not broaden into shell execution or unbounded templating. Re-run the focused Pingora contract and hosted exact-head security/runtime gates after the source repair.
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Problem
The Pingora edge policy treated valid publication PNGs under
evidence/as UTF-8 runtime candidates. This causedevidence/manuscript_revision_pages/page_001.pngto fail with a UTF-8 decode error during the required workflow bootstrap.Change
.pngand.hwpxbinary artifacts only after magic/structural validation.The reported
nginx/unitnamespace was not independently demonstrated as a policy violation or false positive, so it is left as an unresolved scope question. This PR does not claim that all security findings are resolved.Verification at exact HEAD
Head:
7465b9aa51c8ebeab8218a580338afee310cd11fpython -m pytest -q tests/test_pingora_edge_policy.py: 80 passedruff check scripts/ci/pingora_edge_policy.py tests/test_pingora_edge_policy.py: passedpython -m py_compile scripts/ci/pingora_edge_policy.py: passedgit diff --check: passedRequired hosted checks for this exact head are currently queued; their results remain pending.