SB2019032703 - Security restrictions bypass in Elastic Elasticsearch

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Main Vulnerability Database SB2019032703

SB2019032703 - Security restrictions bypass in Elastic Elasticsearch

Published: March 27, 2019

Security Bulletin ID SB2019032703
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper access control (CVE-ID: CVE-2019-7611)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 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


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.


Remediation

Install update from vendor's website.

References