Bug 2191668 (CVE-2023-2422)

Summary:	CVE-2023-2422 keycloak: oauth client impersonation
Product:	[Other] Security Response	Reporter:	Chess Hazlett <chazlett>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	boliveir, chazlett, drichtar, pdrozd, pjindal, pskopek, rowaters, security-response-team, sthorger, vinair
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	keycloak 18.0	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in Keycloak. A Keycloak server configured to support mTLS authentication for OAuth/OpenID clients does not properly verify the client certificate chain. A client that possesses a proper certificate can authorize itself as any other client, therefore, access data that belongs to other clients.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-06-27 23:31:56 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2191681

Description Chess Hazlett 2023-04-28 17:40:00 UTC

A Keycloak server configured to support mTLS authentication for OAuth/OpenID clients does not properly verify the client certificate chain. A client that possesses a proper certificate can authorize itself as any other client and therefore access data that belongs to other clients.

Comment 2 errata-xmlrpc 2023-06-27 18:49:29 UTC

This issue has been addressed in the following products:

  Red Hat Single Sign-On 7.6 for RHEL 9

Via RHSA-2023:3885 https://access.redhat.com/errata/RHSA-2023:3885

Comment 3 errata-xmlrpc 2023-06-27 18:49:37 UTC

This issue has been addressed in the following products:

  Red Hat Single Sign-On 7.6 for RHEL 8

Via RHSA-2023:3884 https://access.redhat.com/errata/RHSA-2023:3884

Comment 4 errata-xmlrpc 2023-06-27 18:49:45 UTC

This issue has been addressed in the following products:

  Red Hat Single Sign-On 7.6 for RHEL 7

Via RHSA-2023:3883 https://access.redhat.com/errata/RHSA-2023:3883

Comment 5 errata-xmlrpc 2023-06-27 18:49:52 UTC

This issue has been addressed in the following products:

  RHEL-8 based Middleware Containers

Via RHSA-2023:3888 https://access.redhat.com/errata/RHSA-2023:3888

Comment 6 errata-xmlrpc 2023-06-27 18:53:50 UTC

This issue has been addressed in the following products:

  Red Hat Single Sign-On

Via RHSA-2023:3892 https://access.redhat.com/errata/RHSA-2023:3892

Comment 7 Product Security DevOps Team 2023-06-27 23:31:54 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2023-2422