Detections
Analytics
CVE-2023-6563
high
Description
An unconstrained memory consumption vulnerability was discovered in Keycloak. It can be triggered in environments which have millions of offline tokens (> 500,000 users with each having at least 2 saved sessions). If an attacker creates two or more user sessions and then open the "consents" tab of the admin User Interface, the UI attempts to load a huge number of offline client sessions leading to excessive memory and CPU consumption which could potentially crash the entire system.
References
https://github.com/keycloak/keycloak/issues/13340
https://bugzilla.redhat.com/show_bug.cgi?id=2253308
https://access.redhat.com/security/cve/CVE-2023-6563
https://access.redhat.com/errata/RHSA-2023:7858
https://access.redhat.com/errata/RHSA-2023:7856