A vulnerability has been found in OpenSearch and classified as critical. Affected by this vulnerability is an unknown part of the component JWT Role Handler. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

OpenSearch is an open source distributed and RESTful search engine. 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. OpenSearch 1.0.0-1.3.7 and 2.0.0-2.4.1 are affected. Users are advised to upgrade to OpenSearch 1.3.8 or 2.5.0. There are no known workarounds for this issue.

The weakness was released 01/24/2023 as GHSA-864v-6qj7-62qj. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2023-23612 since 01/16/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 2.5.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

Entry connected to this vulnerability is available at VDB-219270.

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• OpenSearch

Version

• 1.3.7
• 1.3.10
• 1.3.14
• 2.0.0.0
• 2.0.1
• 2.1.0.0
• 2.2.0.0
• 2.2.1
• 2.3
• 2.4.0

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