Authentication bypass using an alternate path or channel in Keycloak - CVE-2023-0264
Published: March 2, 2023 / Updated: May 31, 2024
Vulnerability identifier: #VU72725
CSH Severity: Medium
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-0264
CWE-ID: CWE-288
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote user to impersonate application users.
The vulnerability exists due to an error when handling authentication requests in the OpenID Connect user authentication. A remote authenticated user who can obtain a certain piece of info from a victim's user request from the same realm can use that data to impersonate the victim and generate new session tokens.
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-2023-0264
Install updates from vendor's website.
Keycloak - update to 21.0.1
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
Links to Public Exploits and PoC-codes
External References
Related Security Bulletins
- User impersonation 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