Resource exhaustion in Red Hat Build Of Keycloak
CVE-2023-6563
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 tw…
EPSS: 0.012 (65.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Red Hat Build Of Keycloak
- Red Hat Single Sign-on 7.6 For Rhel 7 — versions 0:18.0.11-2.redhat_00003.1.el7sso
- Red Hat Single Sign-on 7.6 For Rhel 8 — versions 0:18.0.11-2.redhat_00003.1.el8sso
- Red Hat Single Sign-on 7.6 For Rhel 9 — versions 0:18.0.11-2.redhat_00003.1.el9sso
- Red Hat Rhel-8 Based Middleware Containers — versions 7.6-38, 7.6.6-2
- Red Hat Single Sign-on 7.6.6
- Redhat Enterprise_linux — versions 7.0, 8.0, 9.0
- Redhat Keycloak
- Redhat Openshift_container_platform — versions 4.11, 4.12
- Redhat Openshift_container_platform_for_ibm_linuxone — versions 4.9, 4.10
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, Exploit, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Issue Tracking)
- secalert@redhat.com (Issue Tracking)
Frequently asked questions
- What is CVE-2023-6563?
- CVE-2023-6563 is a high-severity vulnerability in Red Hat Build Of Keycloak, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.7/10. Published 2023-12-14.
- How severe is CVE-2023-6563?
- High severity. CVSS v3 base score is 7.7 out of 10.