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Security Advisories: GSA_kwCzR0hTQS04NjR2LTZxajctNjJxas4AAxIy

Issue with whitespace in JWT roles in OpenSearch

Advisory title: Issue with whitespace in JWT roles

Affected versions:

OpenSearch 1.0.0-1.3.7 and 2.0.0-2.4.1

Patched versions:

OpenSearch 1.3.8 and 2.5.0

Impact:

OpenSearch uses JWTs to store role claims obtained from the Identity Provider (IdP) when the authentication backend is SAML or OpenID Connect. There is an issue in how those claims are processed from the JWTs where the leading and trailing whitespace is trimmed, allowing users to potentially claim roles they are not assigned to if any role matches the whitespace-stripped version of the roles they are a member of.

This issue is only present for authenticated users, and it requires either the existence of roles that match, not considering leading/trailing whitespace, or the ability for users to create said matching roles. In addition, the Identity Provider must allow leading and trailing spaces in role names.

Patches:

OpenSearch versions 1.3.8 and 2.5.0 contain a fix for this issue.

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.

Permalink: https://github.com/advisories/GHSA-864v-6qj7-62qj
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS04NjR2LTZxajctNjJxas4AAxIy
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: almost 2 years ago
Updated: almost 2 years ago

CVSS Score: 4.7
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

EPSS Percentage: 0.00095
EPSS Percentile: 0.41185

Identifiers: GHSA-864v-6qj7-62qj, CVE-2023-23612
References:

• https://github.com/opensearch-project/security/security/advisories/GHSA-864v-6qj7-62qj
• https://nvd.nist.gov/vuln/detail/CVE-2023-23612
• https://github.com/opensearch-project/OpenSearch/releases/tag/2.5.0
• https://github.com/advisories/GHSA-864v-6qj7-62qj

Repository: https://github.com/opensearch-project/security
Blast Radius: 1.0

Affected Packages