In Elasticsearch before 7.9.0 and 6.8.12 a field disclosure flaw was found when running a scrolling search with Field Level Security. If a user runs the same query another more privileged user recently ran, the scrolling search can leak fields that should be hidden. This could result in an attacker gaining additional permissions against a restricted index.
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 | * | 6.8.12 (excluding) |
| Elasticsearch | Elastic | 7.0.0 (including) | 7.9.0 (excluding) |
| 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