A flaw was found in Keycloak that occurs from an error in the re-authentication mechanism within org.keycloak.authentication. This flaw allows hijacking an active Keycloak session by triggering a new authentication process with the query parameter "prompt=login," prompting the user to re-enter their credentials. If the user cancels this re-authentication by selecting "Restart login," an account takeover may occur, as the new session, with a different SUB, will possess the same SID as the previous session.

Red Hat, Inc. AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Red Hat, Inc. CWE-287

Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1867 [No types assigned]

Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:1868 [No types assigned]

Red Hat, Inc. https://access.redhat.com/security/cve/CVE-2023-6787 [No types assigned]

Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=2254375 [No types assigned]