CVE-2023-2422
HIGHCVSS 7.1/10EPSS 0.43%
Last modified
CVE-2023-2422 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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. EPSS estimates a 0.43% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Keycloak | All versions |
| Redhat | Openshift Container Platform | 4.9 |
| Redhat | Openshift Container Platform | 4.10 |
| Redhat | Openshift Container Platform | 4.11 |
| Redhat | Openshift Container Platform | 4.12 |
| Redhat | Single Sign-On | 7.6 |
References
- https://access.redhat.com/errata/RHSA-2023:3883Vendor Advisory
- https://access.redhat.com/errata/RHSA-2023:3884Vendor Advisory
- https://access.redhat.com/errata/RHSA-2023:3885Vendor Advisory
- https://access.redhat.com/errata/RHSA-2023:3888Vendor Advisory
- https://access.redhat.com/errata/RHSA-2023:3892Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2023-2422Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2191668Issue Tracking, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2023:3883Vendor Advisory
- https://access.redhat.com/errata/RHSA-2023:3884Vendor Advisory
- https://access.redhat.com/errata/RHSA-2023:3885Vendor Advisory
- https://access.redhat.com/errata/RHSA-2023:3888Vendor Advisory
- https://access.redhat.com/errata/RHSA-2023:3892Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2023-2422Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2191668Issue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-2422?
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.
How severe is CVE-2023-2422?
CVE-2023-2422 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.
How do I fix CVE-2023-2422?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2023-2422?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST