vulnerability / NVI-00018643 / Revision 1
@hulumi/drift: Drift classifier fails open on adapter errors and over-promotes Mixed verdicts
GitHub lists this reviewed advisory for @hulumi/drift. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
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02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
@hulumi/drift
source listed< 1.4.0
**Affected:** `@hulumi/drift` `< 1.4.0` — **Fixed in:** `1.4.0` — **Severity:** Medium — **CWE-755 (Improper Handling of Exceptional Conditions)** #### Summary `@hulumi/drift` runs four adapters that each ask a different question about whether a resource has drifted (Pulumi-state diff, provider-version change, CloudTrail event, etc.). A classifier combines the adapters' answers into a verdict like `None / none`, `ConsoleBreakGlass / high`, or `Mixed / high`, and caches the verdict for 6 hours by default. Two related bugs from one root cause — the classifier only read each adapter's `detected: true/false` field and ignored whether the adapter itself succeeded: 1. **Cached "all clear" on adapter failure.** When an adapter failed (e.g. transient network error from the Automation API), the classifier read `detected: false`, concluded "no drift", and cached the verdict as `None / none` for 6 hours. A single transient failure could mask real console-break-glass mutations for the rest of the window. 2. **Mixed verdicts without real evidence.** The `Mixed / high` and `ConsoleBreakGlass / high` verdicts (incident severity) could fire on the "the CloudTrail probe round-tripped successful
03 / Response
What to do next
- investigate
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04 / Limits
What this report cannot establish
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05 / Provenance
Sources you can inspect
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- GHSA-32g3-35g9-wc9g ↗
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- Revision 1 ·
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