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
| Link | Resource |
|---|---|
| https://access.redhat.com/errata/RHSA-2023:7854 | Vendor Advisory |
| https://access.redhat.com/errata/RHSA-2023:7855 | Vendor Advisory |
| https://access.redhat.com/errata/RHSA-2023:7856 | Vendor Advisory |
| https://access.redhat.com/errata/RHSA-2023:7857 | Exploit |
| https://access.redhat.com/errata/RHSA-2023:7858 | Vendor Advisory |
| https://access.redhat.com/security/cve/CVE-2023-6563 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2253308 | Issue Tracking |
| https://github.com/keycloak/keycloak/issues/13340 | Issue Tracking |
Configurations
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History
27 Dec 2023, 18:49
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.7 |
| CWE | CWE-770 | |
| References | () https://access.redhat.com/errata/RHSA-2023:7857 - Exploit | |
| References | () https://access.redhat.com/errata/RHSA-2023:7858 - Vendor Advisory | |
| References | () https://access.redhat.com/errata/RHSA-2023:7854 - Vendor Advisory | |
| References | () https://access.redhat.com/security/cve/CVE-2023-6563 - Vendor Advisory | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2253308 - Issue Tracking | |
| References | () https://access.redhat.com/errata/RHSA-2023:7856 - Vendor Advisory | |
| References | () https://github.com/keycloak/keycloak/issues/13340 - Issue Tracking | |
| References | () https://access.redhat.com/errata/RHSA-2023:7855 - Vendor Advisory | |
| CPE | cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* cpe:2.3:a:redhat:openshift_container_platform_for_ibm_linuxone:4.9:*:*:*:*:*:*:* cpe:2.3:a:redhat:openshift_container_platform:4.12:*:*:*:*:*:*:* cpe:2.3:a:redhat:openshift_container_platform_for_power:4.9:*:*:*:*:*:*:* cpe:2.3:a:redhat:single_sign-on:7.6:*:*:*:*:*:*:* cpe:2.3:a:redhat:openshift_container_platform:4.11:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* cpe:2.3:a:redhat:openshift_container_platform_for_ibm_linuxone:4.10:*:*:*:*:*:*:* cpe:2.3:a:redhat:openshift_container_platform_for_power:4.10:*:*:*:*:*:*:* cpe:2.3:a:redhat:single_sign-on:-:*:*:*:text-only:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
14 Dec 2023, 22:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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14 Dec 2023, 18:15
| Type | Values Removed | Values Added |
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| New CVE |
Information
Published : 2023-12-14 18:15
Updated : 2024-02-05 00:22
NVD link : CVE-2023-6563
Mitre link : CVE-2023-6563
CVE.ORG link : CVE-2023-6563
JSON object : View
Products Affected
redhat
- openshift_container_platform
- openshift_container_platform_for_ibm_linuxone
- enterprise_linux
- single_sign-on
- openshift_container_platform_for_power
- keycloak
CWE
CWE-770
Allocation of Resources Without Limits or Throttling