Description
keycloak before version 4.0.0.final is vulnerable to a infinite loop in session replacement. A Keycloak cluster with multiple nodes could mishandle an expired session replacement and lead to an infinite loop. A malicious authenticated user could use this flaw to achieve Denial of Service on the server.
Remediation
References
https://access.redhat.com/errata/RHSA-2018:2428
https://access.redhat.com/errata/RHSA-2019:0877
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10912
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