An issue was discovered in Keycloak when using a client with the offline_access
scope. Reuse of session ids across root and user authentication sessions and a lack of root session validation enabled attackers to resolve a user session attached to a different previously authenticated user.
This issue most affects users of shared computers. Suppose a user logs out of their account (without clearing their cookies) in a mobile app or similar client that includes the offline_access
scope, and another user authenticates to the application. In that case, it will share the same root session id, and when utilizing the refresh token, they will be issued a token for the original user.
- https://github.com/keycloak/keycloak/security/advisories/GHSA-97g8-xfvw-q4hg
- https://nvd.nist.gov/vuln/detail/CVE-2022-3916
- 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
- https://github.com/advisories/GHSA-97g8-xfvw-q4hg