GitHub Advisory DatabaseGHSA-3QH5-QQJ2-C78FKeycloak vulnerable to Improper Client Certificate Validation for OAuth/OpenID clients
7.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
0.001 Low
EPSS
Percentile
36.6%
When a Keycloak server is configured to support mTLS authentication for OAuth/OpenID clients, it 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.
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| org.keycloak:keycloak-services | lt | 21.1.2 |
References
access.redhat.com/errata/RHSA-2023:3883
access.redhat.com/errata/RHSA-2023:3884
access.redhat.com/errata/RHSA-2023:3885
access.redhat.com/errata/RHSA-2023:3888
access.redhat.com/errata/RHSA-2023:3892
access.redhat.com/security/cve/CVE-2023-2422
bugzilla.redhat.com/show_bug.cgi?id=2191668
github.com/advisories/GHSA-3qh5-qqj2-c78f
github.com/keycloak/keycloak/commit/5c6c55945a384bfd82e51283096204dcb6f63d91
github.com/keycloak/keycloak/security/advisories/GHSA-3qh5-qqj2-c78f
nvd.nist.gov/vuln/detail/CVE-2023-2422
Related
7.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
0.001 Low
EPSS
Percentile
36.6%