CVE-2023-2422
Keycloak: oauth client impersonation
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-295 |
| Vendor | red hat |
| Product | red hat single sign-on 7 |
| Published | Oct 4, 2023 |
| Last Updated | Aug 2, 2024 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None
Affected Versions
Red Hat / Red Hat Single Sign-On 7
All versions affected Red Hat / Red Hat Single Sign-On 7.6 for RHEL 7
All versions affected Red Hat / Red Hat Single Sign-On 7.6 for RHEL 8
All versions affected Red Hat / Red Hat Single Sign-On 7.6 for RHEL 9
All versions affected Red Hat / RHEL-8 based Middleware Containers
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2023:3883 access.redhat.com: https://access.redhat.com/errata/RHSA-2023:3884 access.redhat.com: https://access.redhat.com/errata/RHSA-2023:3885 access.redhat.com: https://access.redhat.com/errata/RHSA-2023:3888 access.redhat.com: https://access.redhat.com/errata/RHSA-2023:3892 access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-2422 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2191668