Elastic Stack 7.12.0 and 6.8.15 Security Update

Summary

See Elastic Stack 7.12.0 and 6.8.15 Security Update.

Elasticsearch Suggester & Profile API information disclosure flaw (ESA-2021-06)

A document disclosure flaw was found in the Elasticsearch suggester and profile API when Document and Field Level Security are enabled. The suggester and profile API are normally disabled for an index when document level security is enabled on the index. Certain queries are able to enable the profiler and suggester which could lead to disclosing the existence of documents and fields the attacker should not be able to view.

Affected Versions:

All versions of Elasticsearch before 7.11.2 and 6.8.15.

Solutions and Mitigations:

Anyone using both Document and Field Level Security should upgrade to Elasticsearch version 7.11.2 or 6.8.15. There is no known workaround for this flaw.

CVSSv3 - 3.1: AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

CVE ID: CVE-2021-22135

Elasticsearch field disclosure flaw (ESA-2021-08)

A document disclosure flaw was found in Elasticsearch when Document or Field Level Security is used. Search queries do not properly preserve security permissions when executing certain cross-cluster search queries. This could result in the search disclosing the existence of documents the attacker should not be able to view. This could result in an attacker gaining additional insight into potentially sensitive indices.

Thanks to Piotr Dłubisz, Security Consultant at JN Data A/S for reporting this issue.

Affected Versions:

All versions of Elasticsearch before 6.8.15 and 7.11.2

Solutions and Mitigations:

Anyone using Document or Field Level Security should upgrade to Elasticsearch version 7.11.2 or 6.8.15. There is no known workaround for this flaw.

CVSSv3 - 2.6:AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N

CVE ID: CVE-2021-22137

Possible fixes

Update Elasticsearch to 7.11.2 or newer

Defintion of Done

• Update to version not vulnerable to ESA-2021-06 and ESA-2021-08

/cc @ironbank-notifications/bug