Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS01NGYzLWM2aGctODY1aM4AA3xn

Allocation of Resources Without Limits in Keycloak

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.

Permalink: https://github.com/advisories/GHSA-54f3-c6hg-865h
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS01NGYzLWM2aGctODY1aM4AA3xn
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: 5 months ago
Updated: 4 months ago

CVSS Score: 7.7
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Identifiers: GHSA-54f3-c6hg-865h, CVE-2023-6563
References:

• https://nvd.nist.gov/vuln/detail/CVE-2023-6563
• https://github.com/keycloak/keycloak/issues/13340
• https://access.redhat.com/security/cve/CVE-2023-6563
• https://bugzilla.redhat.com/show_bug.cgi?id=2253308
• https://github.com/keycloak/keycloak/pull/15463
• https://github.com/keycloak/keycloak/commit/556146f961f7c8ddf64de15e2117a58d045f72b5
• 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://github.com/advisories/GHSA-54f3-c6hg-865h

Repository: https://github.com/keycloak/keycloak
Blast Radius: 16.8

Affected Packages