Elasticsearch versions before 6.8.13 and 7.9.2 contain a document disclosure flaw when Document or Field Level Security is used. Search queries do not properly preserve security permissions when executing certain complex 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.
Weakness
The product does not properly manage privileges while it is switching between different contexts that have different privileges or spheres of control.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Elasticsearch | Elastic | * | 6.8.13 (excluding) |
| Elasticsearch | Elastic | 7.0.0 (including) | 7.9.2 (excluding) |
| Red Hat Fuse 7.11 | RedHat | elasticsearch | * |
| Elasticsearch | Ubuntu | esm-apps/xenial | * |
| Elasticsearch | Ubuntu | trusty | * |
| Elasticsearch | Ubuntu | xenial | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/17.html
- https://cwe.mitre.org/data/definitions/30.html
- https://cwe.mitre.org/data/definitions/35.html
References
- https://discuss.elastic.co/t/elastic-stack-7-9-3-and-6-8-13-security-update/253033
- https://security.netapp.com/advisory/ntap-20201123-0001/
- https://staging-website.elastic.co/community/security/
- https://discuss.elastic.co/t/elastic-stack-7-9-3-and-6-8-13-security-update/253033
- https://security.netapp.com/advisory/ntap-20201123-0001/
- https://staging-website.elastic.co/community/security/