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[AWSX] feat(forwarder): allow restricting access to s3:GetObject in template #1062

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Merged
RaphaelAllier merged 1 commit into from
Feb 9, 2026
Merged

[AWSX] feat(forwarder): allow restricting access to s3:GetObject in template #1062

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11 changes: 10 additions & 1 deletion aws/logs_monitoring/template.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -307,6 +307,10 @@ Parameters:
- "true"
- "false"
Description: Set to true to enable enhanced Lambda metrics. This will generate additional custom metrics for Lambda functions, including cold starts, estimated AWS costs, and custom tags. Default is false.
S3BucketArnList:
Type: CommaDelimitedList
Default: ""
Description: List of S3 bucket ARNs the forwarder can read from (e.g. arn:aws:s3:::my-bucket/*), separated by comma. Leave empty to allow all buckets. Note that restricting this list may break the automatic creation of S3 triggers for buckets not included.
KmsKeyList:
Type: CommaDelimitedList
Default: ""
Expand Down Expand Up @@ -402,6 +406,8 @@ Conditions:
- !Equals [!Join ["", !Ref VPCSubnetIds], ""]
SetDdLogLevel: !Not
- !Equals [!Ref DdLogLevel, ""]
SetS3BucketArns: !Not
- !Equals [!Join ["", !Ref S3BucketArnList], ""]
SetDdForwarderDecryptKeys: !Not
- !Equals [!Join ["", !Ref KmsKeyList], ""]
CreateRetryScheduler: !And
Expand Down Expand Up @@ -683,7 +689,10 @@ Resources:
- !Ref AWS::NoValue
- Action:
- s3:GetObject
Resource: "*"
Resource: !If
- SetS3BucketArns
- !Ref S3BucketArnList
- "*"
Effect: Allow
# To get object from encrypted s3 buckets. Use PermissionsBoundaryArn to limit access if needed.
# https://aws.amazon.com/premiumsupport/knowledge-center/s3-troubleshoot-403/#AWS_KMS_encryption
Expand Down
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