Auth bypass in Redhat.com Keycloak
CVE-2023-0264
A flaw was found in Keycloaks OpenID Connect user authentication, which may incorrectly authenticate requests. An authenticated attacker who could obtain information from a user request within the same realm could use that data to imperson…
Vulnerability class: Broken Authentication
EPSS: 0.013 (66.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Redhat.com Keycloak — versions 18.0.6
- Redhat Enterprise_linux — versions 7.0, 8.0, 9.0
- Redhat Keycloak
- Redhat Openshift_container_platform — versions 4.9, 4.10
- Redhat Openshift_container_platform_for_ibm_linuxone — versions 4.9, 4.10
- Redhat Openshift_container_platform_ibm_z_systems — versions 4.9, 4.10
- Redhat Single_sign-on
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-0264?
- CVE-2023-0264 is a medium-severity vulnerability in Redhat.com Keycloak, classified under Improper Authentication. CVSS score: 5.0/10. Published 2023-08-04.
- How severe is CVE-2023-0264?
- Medium severity. CVSS v3 base score is 5.0 out of 10.
- Is CVE-2023-0264 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.