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Privilege Context Switching Error in Elasticsearch

Low severity GitHub Reviewed Published Mar 18, 2021 to the GitHub Advisory Database • Updated Jan 29, 2023

Package

maven org.elasticsearch:elasticsearch (Maven)

Affected versions

< 6.8.13
>= 7.0.0, < 7.9.2

Patched versions

6.8.13
7.9.2

Description

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.

References

Published by the National Vulnerability Database Oct 22, 2020
Reviewed Mar 16, 2021
Published to the GitHub Advisory Database Mar 18, 2021
Last updated Jan 29, 2023

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS score

0.068%
(32nd percentile)

Weaknesses

CVE ID

CVE-2020-7020

GHSA ID

GHSA-g9fw-9x87-rmrj

Source code

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