high7.7
CVE-2023-6563
Allocation of Resources Without Limits in Keycloak
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.keycloak:keycloak-model-jpa | < 21.0.0 | 21.0.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Redhat | Keycloak | before 21.0.0 |
| Redhat | Single Sign-On | All versions Version 7.6 |
| Redhat | Openshift Container Platform | Versions 4.11, 4.12 |
| Redhat | Openshift Container Platform For Power | Versions 4.9, 4.10 |
| Redhat | Openshift Container Platform For Ibm Linuxone | Versions 4.9, 4.10 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://access.redhat.com/errata/RHSA-2023:7854
- https://access.redhat.com/errata/RHSA-2023:7855
- https://access.redhat.com/errata/RHSA-2023:7856
- https://access.redhat.com/errata/RHSA-2023:7857
- https://access.redhat.com/errata/RHSA-2023:7858
- https://access.redhat.com/security/cve/CVE-2023-6563
- https://bugzilla.redhat.com/show_bug.cgi?id=2253308
- https://github.com/keycloak/keycloak/issues/13340
- https://github.com/advisories/GHSA-54f3-c6hg-865h
- https://nvd.nist.gov/vuln/detail/CVE-2023-6563
- https://github.com/keycloak/keycloak/pull/15463
- https://github.com/keycloak/keycloak/commit/556146f961f7c8ddf64de15e2117a58d045f72b5