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feat(vendor-access): allow read-only CloudTrail in the permission boundary#151

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feat/vam-cloudtrail-read
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feat(vendor-access): allow read-only CloudTrail in the permission boundary#151
dpappa wants to merge 1 commit into
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feat/vam-cloudtrail-read

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@dpappa dpappa commented Jul 9, 2026

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…ndary

Add read-only CloudTrail actions to StreamNativeCloudPermissionBoundary so
StreamNative's vendor-access roles (which already attach AWS-managed
ReadOnlyAccess) can query CloudTrail management events:

  cloudtrail:LookupEvents, DescribeTrails, GetTrailStatus,
  GetEventSelectors, ListTrails

Motivation: in a BYOC incident (all EKS nodes NotReady), the EKS cluster IAM
role had AmazonEKSClusterPolicy / AmazonEKSVPCResourceController detached
out-of-band. Attributing the change requires CloudTrail LookupEvents, which
the boundary currently blocks (ReadOnlyAccess grants it on the role, but the
boundary is the gate) -- so StreamNative cannot self-diagnose who/what
detached a StreamNative-managed IAM policy.

All added actions are read-only; no Start/Stop/Delete/Put trail mutations.

SECURITY REVIEW REQUESTED: this widens StreamNative's standing access in every
BYOC account that applies the new version. cloudtrail:LookupEvents is
account-wide (Resource "*", not resource-scopable), so it grants read of the
account's full management-event history. Please confirm this is acceptable
before merge/release.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
@dpappa dpappa requested a review from a team as a code owner July 9, 2026 19:12
@dpappa dpappa closed this Jul 9, 2026
@dpappa dpappa deleted the feat/vam-cloudtrail-read branch July 9, 2026 19:21
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