Improper access control in Elasticsearch - CVE-2019-7611
Published: March 27, 2019
Vulnerability identifier: #VU18086
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-7611
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Elastic Stack
Affected software:
Elasticsearch
Elasticsearch
Detailed vulnerability description
The vulnerability allows a remote attacker to gain unauthorized access to sensitive information.
The vulnerability exists due to improper access restrictions when Field Level Security and Document Level Security are disabled and the _aliases, _shrink, or _split endpoints are used, which means that elasticsearch.yml file has xpack.security.dls_fls.enabled set to false. A remote authenticated attacker can make API calls to the _aliases, _shrink, or _split endpoints and make existing data available under a new index/alias name.
How to mitigate CVE-2019-7611
Install updates from vendor's website.