chore: drop IAM actions covered by AWS managed policies - #12745
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- Remove read-only actions already granted by SecurityAudit and ViewOnlyAccess from the Prowler additions policy - Apply the same trim to the CloudFormation scan role templates - Preserve securityhub:BatchImportFindings and the scoped S3 report bucket permissions
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✅ No Conflicts No conflict markers, and the branch merges cleanly into its base. |
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Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review. 📝 WalkthroughWalkthroughThe change removes redundant read-only AWS actions from Prowler IAM policies and CloudFormation role templates. It retains required actions and records the policy reduction in the changelog. ChangesProwler IAM policy reduction
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to This change removes redundant read-only IAM permissions while retaining required custom permissions and Security Hub finding imports. The policy and CloudFormation role updates are aligned, with no remaining concrete merge-blocking risk. Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Actionable comments posted: 1
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Inline comments:
In `@prowler/changelog.d/additions-policy-redundant-actions.changed.md`:
- Line 1: Rewrite the changelog fragment as a single concise, verbless
description of removing 23 redundant read-only actions from the additions policy
and CloudFormation scan role templates; omit the trailing period and avoid
sentence-style wording.
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Configuration used: Organization UI
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📒 Files selected for processing (4)
contrib/aws/multi-account-securityhub/templates/CF-Prowler-CrossAccountRole.ymlpermissions/prowler-additions-policy.jsonpermissions/templates/cloudformation/prowler-scan-role.ymlprowler/changelog.d/additions-policy-redundant-actions.changed.md
💤 Files with no reviewable changes (3)
- permissions/prowler-additions-policy.json
- contrib/aws/multi-account-securityhub/templates/CF-Prowler-CrossAccountRole.yml
- permissions/templates/cloudformation/prowler-scan-role.yml
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Context
permissions/prowler-additions-policy.jsonaccumulated actions over time thatAWS has since folded into the two managed policies Prowler already requires,
SecurityAuditandjob-function/ViewOnlyAccess. The additions policy is meantto cover only the gap those two leave, so the overlap is dead weight that makes
the least-privilege story harder to audit.
No existing issue tracks this; it is housekeeping.
Description
from the Prowler additions policy
securityhub:BatchImportFindingsand the scoped S3 report bucketpermissions
23 actions dropped from
AllowMoreReadOnly(59 -> 36). The same trim is appliedto the two inline copies in
permissions/templates/cloudformation/prowler-scan-role.yml(55 -> 34 and 47 -> 32) and to
contrib/aws/multi-account-securityhub/templates/CF-Prowler-CrossAccountRole.yml(35 -> 23, plus
securityhub:GetFindingsfromAllowProwlerSecurityHub, whichSecurityAudit'ssecurityhub:Get*already covers).Effective permissions are unchanged. Every removed action is granted by
SecurityAudit v92 or ViewOnlyAccess v45; the per-file counts differ only because
the templates were already out of sync with the canonical policy before this PR.
Deliberately untouched:
s3:ListBucketinprowler-scan-role.yml— belongs to the S3 reportintegration statement, scoped to a specific bucket ARN with an
s3:ResourceAccountcondition, not the account-wide read-only blockcontrib/aws/org-multi-account/*templates — they use a different, much olderlist under
Sid: AllowMoreReadForProwlerand are already well out of sync;trimming them is a separate change
lambda:GetLayerVersion,rolesanywhere:*,s3:GetObjectAcl, and (in the nested copy)amplify:*permissions/templates/terraform/main.tfreads the JSON directly, so it needs nochange.
Steps to review
The claim to verify is that this is a no-op. Expand both managed policies and the
additions policy into concrete API actions and diff the union before and after:
SecurityAudit
and ViewOnlyAccess.
(
https://servicereference.us-east-1.amazonaws.com/) sobackup:List*becomesits real actions rather than an opaque glob.
masterand at thisbranch. Both sides yield an identical 3,590 concrete actions.
Spot checks for the non-obvious removals:
glue:GetSecurityConfiguration*matches exactlyGetSecurityConfigurationandGetSecurityConfigurations, both in SecurityAuditservicecatalog:List*is byte-identical to the wildcard in ViewOnlyAccessshield:DescribeProtectionis covered by SecurityAudit'sshield:Describe*cfn-linton both templates reports the same two pre-existing warnings asmaster(W1030,W1031) and no errors.Summary by CodeRabbit