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OpenSearch issue with fine-grained access control during extremely rare race conditions

Moderate severity GitHub Reviewed Published May 8, 2023 in opensearch-project/security • Updated Nov 7, 2023

Package

maven org.opensearch.plugin:opensearch-security (Maven)

Affected versions

>= 1.0.0, < 1.3.10.0
>= 2.0.0, < 2.7.0.0

Patched versions

1.3.10.0
2.7.0.0

Description

Impact

There is an issue with the implementation of fine-grained access control rules (document-level security, field-level security and field masking) where they are not correctly applied to the queries during extremely rare race conditions potentially leading to incorrect access authorization. For this issue to be triggered, two concurrent requests need to land on the same instance exactly when query cache eviction happens, once every four hours.

Affected versions

OpenSearch 1.0.0-1.3.9 and 2.0.0-2.6.0

Patched versions

OpenSearch 1.3.10 and 2.7.0

For more information

If you have any questions or comments about this advisory, please contact AWS/Amazon Security via our issue reporting page (https://aws.amazon.com/security/vulnerability-reporting/) or directly via email to [email protected]. Please do not create a public GitHub issue.

References

@bbarani bbarani published to opensearch-project/security May 8, 2023
Published by the National Vulnerability Database May 8, 2023
Published to the GitHub Advisory Database May 9, 2023
Reviewed May 9, 2023
Last updated Nov 7, 2023

Severity

Moderate

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
Required
Scope
Unchanged
Confidentiality
High
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:R/S:U/C:H/I:N/A:N

EPSS score

0.166%
(54th percentile)

Weaknesses

CVE ID

CVE-2023-31141

GHSA ID

GHSA-g8xc-6mf7-h28h

Source code

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