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GHSA-54f3-c6hg-865h

Allocation of Resources Without Limits in Keycloak

Source: GitHub Advisory Database (reviewed) High CVE-2023-6563

Packages

EcosystemPackageAffectedFixed in
Maven org.keycloak:keycloak-model-jpa < 21.0.0 21.0.0

Details

As written in the advisory (Markdown source, shown as plain text).

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

External links from the advisory. They lead to third-party sites.