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 v4.0: 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/E:P/U:Green
CVE-ID: CVE-2023-0264
CWE-ID: CWE-288
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Keycloak
Affected software:
Keycloak
Keycloak
Detailed vulnerability description
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.
How to mitigate CVE-2023-0264
Install updates from vendor's website.