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CVE PROGRAM SOURCE RECORD7.7 High

CVE-2023-6563

Keycloak: offline session token dos

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
redhat

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat Single Sign-On 7.6 for RHEL 7

Default version status: affected

  • 0:18.0.11-2.redhat_00003.1.el7sso to < *unaffected

Red Hat Red Hat Single Sign-On 7.6 for RHEL 8

Default version status: affected

  • 0:18.0.11-2.redhat_00003.1.el8sso to < *unaffected

Red Hat Red Hat Single Sign-On 7.6 for RHEL 9

Default version status: affected

  • 0:18.0.11-2.redhat_00003.1.el9sso to < *unaffected

Red Hat RHEL-8 based Middleware Containers

Default version status: affected

  • 7.6-38 to < *unaffected

Red Hat RHEL-8 based Middleware Containers

Default version status: affected

  • 7.6.6-2 to < *unaffected

Red Hat Single Sign-On 7.6.6

Default version status: unaffected

Red Hat Red Hat Build of Keycloak

Default version status: unaffected

References