A permission issue was found in Elasticsearch versions before 5.6.15 and 6.6.1 when Field Level Security and Document Level Security are disabled and the _aliases, _shrink, or _split endpoints are used . If the elasticsearch.yml file has xpack.security.dls_fls.enabled set to false, certain permission checks are skipped when users perform one of the actions mentioned above, to make existing data available under a new index/alias name. This could result in an attacker gaining additional permissions against a restricted index.
{
"cwe_ids": [
"CWE-284"
],
"github_reviewed": true,
"github_reviewed_at": "2022-06-27T14:25:21Z",
"nvd_published_at": "2019-03-25T19:29:00Z",
"severity": "HIGH"
}