OpenSearch vulnerable to Improper Authorization of Index Containing Sensitive Information

Impact

Requests to an OpenSearch cluster configured with advanced access control features (document level security (DLS), field level security (FLS), and/or field masking) will not be filtered when the query's search pattern matches an aliased index.

OpenSearch Dashboards creates an alias to .kibana by default, so filters with the index pattern of * to restrict access to documents or fields will not be applied.

This issue allows requests to access sensitive information when customer have acted to restrict access that specific information.

Patches

OpenSearch 2.2.0+ contains the fix for this issue. OpenSearch Security Plugin 2.2.0.0 is compatible with OpenSearch 2.2.0.

Workarounds

There is no recommended work around.

References

See pull request #1999 for additional details.

For more information

If you have any questions or comments about this advisory we ask that contact AWS/Amazon Security via our vulnerability reporting page or directly via email to [email protected]. Please do not create a public GitHub issue.