fix(snapshot): remove host Python sanitizer dependency - #11181
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Signed-off-by: Carlos Villela <cvillela@nvidia.com>
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Included review availability: Your plan provides up to 12 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughSnapshot sanitization now uses a packaged Node.js helper with native filesystem support instead of host Python. The helper validates filesystem identities, bounds processing, applies secure mutations, and reports prerequisite failures. Tests, artifacts, dependencies, cache metadata, workflows, and documentation were updated. ChangesNative snapshot sanitization
Priority: ➖ Normal — Impact reflects medium issue severity. Estimated code review effort: 4 (Complex) | ~60 minutes Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant SnapshotSanitizerBoundary
participant NodeHelperProcess
participant SnapshotSanitizerHelper
participant FsSafe
SnapshotSanitizerBoundary->>NodeHelperProcess: send serialized snapshot request
NodeHelperProcess->>SnapshotSanitizerHelper: invoke helper
SnapshotSanitizerHelper->>FsSafe: validate and access filesystem root
FsSafe-->>SnapshotSanitizerHelper: bounded filesystem result
SnapshotSanitizerHelper-->>NodeHelperProcess: structured response
NodeHelperProcess-->>SnapshotSanitizerBoundary: validated scan or mutation result
Suggested reviewers: Merge Risk: 🟡 Moderate · up to Snapshot sanitization may suppress an unavailable-native-support error instead of reporting it to direct callers, which can hide remediation guidance and leaves the changed failure behavior unready to merge. 🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Out of Scope Changes checkExplanation Most changes support the sanitizer migration, but the MCP cache expansion and updates to the pinned restore-e2e-cli-artifact action are not clearly required by issue Full details: Docstring CoverageExplanation Docstring coverage is 10.91% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 55 functions across 13 files. (2 skipped: 2 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Code Coverage OverviewLanguages: TypeScript TypeScript / code-coverage/pluginThe overall line coverage in commit 068fb00 in the Show a line coverage summary of the most impacted files.
TypeScript / code-coverage/cliThe overall line coverage in commit 068fb00 in the Updated |
Signed-off-by: Carlos Villela <cvillela@nvidia.com>
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Inline comments:
In `@nemoclaw/src/security/snapshot-sanitizer-failure.test.ts`:
- Line 125: Update the root-inspection catch path in sanitizeOpenClawConfigFile
to rethrow SnapshotSanitizerPrerequisiteError, preserving its remediation
message; continue returning false for all other inspection failures.
In `@nemoclaw/src/shared/snapshot-sanitizer-boundary.cts`:
- Line 226: Update the apply request construction around
invokeSnapshotSanitizerHelper so scan entries include only their metadata and
omit each file’s content before serialization; preserve root and actions
unchanged.
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docs/get-started/prerequisites.mdxdocs/manage-sandboxes/backup-restore.mdxdocs/reference/host-files-and-state.mdxdocs/reference/troubleshooting.mdxinternal/security-reviews/fs-safe-0.8.6-dependency-review.mdnemoclaw/package.jsonnemoclaw/src/security/snapshot-sanitizer-failure.test.tsnemoclaw/src/security/snapshot-sanitizer.test.tsnemoclaw/src/shared/snapshot-sanitizer-boundary.ctsnemoclaw/src/shared/snapshot-sanitizer-helper.mtsnemoclaw/tsconfig.shared.jsonpackage.jsonscripts/e2e/package-cli-artifact.shscripts/e2e/restore-cli-artifact.shsrc/lib/security/snapshot-sanitizer.tssrc/lib/state/sandbox-backup-sanitization.test.tstest/e2e/support/cli-artifact-packaging.test.tstest/e2e/support/cli-artifact-workflow-boundary.test.tstest/package-contract/snapshot-sanitizer-boundary.test.ts
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Signed-off-by: Carlos Villela <cvillela@nvidia.com>
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Blocking: the new helper makes snapshot sanitization unusable on supported Apple Silicon macOS hosts.
helperEnvironment() removes TMPDIR, so the child process resolves os.tmpdir() to /tmp. On macOS, /tmp is a symlink to /private/tmp. assertNativeSupport() passes that symlink to stageFileInDirectory(), which rejects it with FsSafeError: staging parent must be a real directory. main() then reports snapshot-scan-failed, and every sanitizer operation fails before reading the snapshot.
I reproduced this on exact head d338faa0d5b1b443368531be1b27f0104750992b with Node 22.23.2 on darwin/arm64. The focused plugin suites failed 16 of 54 tests, and the CLI backup suite failed 22 of 32 tests. A direct production-style child process with an empty environment reproduces the same not-file probe failure. The native binding itself loads and works when given the canonical temporary directory, so this is attributable to the helper's environment and probe integration.
Please canonicalize the helper's temporary directory before staging, without restoring an ambient attacker-controlled environment, and use the same canonical authority for retained-path validation. Add a macOS regression that launches the real helper through the production stripped environment.
Security review: secrets, input validation, authorization, dependency integrity, data protection, configuration, and filesystem containment pass. Error handling and security testing fail because the supported macOS prerequisite probe is rejected and misclassified. Both CodeRabbit findings are resolved. Required checks are green; the latest Advisor attempt failed separately on provider HTTP 429 responses and produced no finding.
wscurran
added
bug-fix
Signed-off-by: San Dang <sdang@nvidia.com>
Signed-off-by: San Dang <sdang@nvidia.com>
4 participants
Outcome
Snapshot sanitization uses NemoClaw's Node.js runtime and
@openclaw/fs-safe@0.8.6, removing the verified host Python prerequisite from Hermes rebuild's backup phase. Native probing works on macOS with the helper's restricted environment. The separate migration restore operation retains its verified Python resolver.Reason
A supported install could complete without an interpreter accepted by snapshot sanitization, causing a later Hermes rebuild to fail during backup. The accepted decision for #11174 selects the native Node.js filesystem boundary.
Related issues
Fixes #11174
Changes
Verification
Current candidate:
068fb0016050ffbc3d5a95def06bc6bbbdaaf084. The sanitizer repair isb5748b0ecc017320bddee52404ee009b56b85dbf; the follow-up consumes the reviewed main fixes from #11356 and #11362 and removes the historical report rejected by the retention gate.b5748b0e, macOS arm64, Node 25.9.0: 91 focused sanitizer and backup tests passed; 3 compiled package tests passed.npm audit --omit=dev --audit-level=high --registry=https://registry.npmjs.org/found zero vulnerabilities.NODE_OPTIONS=--max-old-space-size=5120 npm run validate:prpassed for the current candidate in an isolated Linux arm64 Node 22.19.0 container against canonical main82b9b4f9bc6f322a7e5ae0ebe686e3ccf31e7a3f, including all selected pre-commit, commitlint, and pre-push checks. The tree remained clean. The current candidate is GitHub Verified. Fresh CI and managed-image qualification are running.Review notes
Accepted scope: #11174 (comment)
The repair addresses the missing migration-restore resolver and the macOS native-probe failure reported in review. Two macOS migration-restore assertions also fail on unchanged base
00c8506799d61dee3408e363729766efecc79953; the isolated Linux plugin suite passes both. The earlier native amd64/arm64 and managed-image results belong to earlier PR commits and do not qualify this repair commit.Pre-publication self-review of NVIDIA/NemoClaw at
068fb0016050ffbc3d5a95def06bc6bbbdaaf084confirmed that the follow-up differs from the automatic merge of reviewed main only by removal of the historical review report. The preceding sanitizer repair atb5748b0ewas inspected against the prior PR head; the tests above verify its sanitizer, interpreter, and temporary-directory trust boundaries. Sensitive paths in the full PR include the three changed workflows, sanitizer/security modules, artifact scripts, and native package cache. The selected package’s historical dependency review remains available in the prior revision. The report is removed from the current source tree to satisfy the repository retention policy. Independent review of the final candidate remains required.Signed-off-by: Carlos Villela cvillela@nvidia.com
Signed-off-by: San Dang sdang@nvidia.com