Description
A flaw was found in the offline_access scope in Keycloak. This issue would affect users of shared computers more (especially if cookies are not cleared), due to a lack of root session validation, and the reuse of session ids across root and user authentication sessions. This enables an attacker to resolve a user session attached to a previously authenticated user; when utilizing the refresh token, they will be issued a token for the original user.
Remediation
References
https://access.redhat.com/errata/RHSA-2022:8961
https://access.redhat.com/errata/RHSA-2022:8962
https://access.redhat.com/errata/RHSA-2022:8963
https://access.redhat.com/errata/RHSA-2022:8964
https://access.redhat.com/errata/RHSA-2022:8965
https://access.redhat.com/errata/RHSA-2023:1043
https://access.redhat.com/errata/RHSA-2023:1044
https://access.redhat.com/errata/RHSA-2023:1045
https://access.redhat.com/errata/RHSA-2023:1047
https://access.redhat.com/errata/RHSA-2023:1049
https://access.redhat.com/security/cve/CVE-2022-3916
https://bugzilla.redhat.com/show_bug.cgi?id=2141404
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