Improper Authorization in Keycloak - CVE-2023-0091
Published: January 12, 2023
Vulnerability identifier: #VU71139
CSH Severity: Medium
CVSS v4: 9.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-0091
CWE-ID: CWE-285
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain unauthorized access to the application.
The vulnerability exists due to missing authorization of a revoked token in the client-registration endpoints. A remote attacker with ability to obtain a revoked token gain unauthorized access to the application.
Affected software
Keycloak
Red Hat Single Sign-On
rh-sso7-keycloak (Red Hat package)
Red Hat Single Sign-On
rh-sso7-keycloak (Red Hat package)
How to mitigate CVE-2023-0091
Install updates from vendor's website.
Keycloak - update to 20.0.3
Red Hat Single Sign-On - update to 7.6.2
rh-sso7-keycloak (Red Hat package) - addressed in versions 18.0.6-1.redhat_00001.1.el7sso, 18.0.6-1.redhat_00001.1.el8sso, 18.0.6-1.redhat_00001.1.el9sso
Red Hat Single Sign-On - update to 7.6.2
rh-sso7-keycloak (Red Hat package) - addressed in versions 18.0.6-1.redhat_00001.1.el7sso, 18.0.6-1.redhat_00001.1.el8sso, 18.0.6-1.redhat_00001.1.el9sso
External References
Related Security Bulletins
- Authorization bypass in Keycloak
- Multiple vulnerabilities in Red Hat Single Sign-On 7.6 for OpenShift
- Multiple vulnerabilities in Red Hat Single Sign-On 7.6 for RHEL 9
- Multiple vulnerabilities in Red Hat Single Sign-On 7.6 for RHEL 8
- Multiple vulnerabilities in Red Hat Single Sign-On 7.6 for RHEL 7
- Multiple vulnerabilities in Red Hat Single Sign-On 7.6