TagResource and ListTagsOfResource accept a stream ARN for a stream that does not exist

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#452 0 comentarios 0 reacciones 1 asignado Ver en GitHub

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Descripción

What ExtendDB does

validate_resource_arn in crates/engine/src/tagging.rs checks only that the table named in a stream ARN exists. TagResource on table/<name>/stream/<label> succeeds for a label the table never had and stores the tags under that ARN, and ListTagsOfResource returns them. ListTagsOfResource on table/<name>/stream/* returns 200.

What DynamoDB does

Measured on 2026-10-22: TagResource and ListTagsOfResource on a stream ARN with a label the table never had return ResourceNotFoundException "Requested resource not found: ResourceArn: not found". On table/<name>/stream/* and table/*/stream/<label> they return ValidationException "Invalid StreamArn".

Effect

Tags can be stored and listed for a stream that does not exist. DynamoDB does not evaluate stream tags for authorization, and with #419 ExtendDB does not either, so no IAM decision depends on them.

Suggested fix

Resolve the label against the table's streams before storing or listing tags. Return ResourceNotFoundException with the service's message for an unknown label, and ValidationException "Invalid StreamArn" for a wildcard table name or label. The answer for a disabled stream's label was not measured.

Lenguaje dominante
Rust
Estrellas
517
Forks
60
Merge medio
4 d 22 h
PR fusionados (30 d)
40

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