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CVE-2023-6563

CVSS v3.1 7.7 (High)
77% Progress
EPSS 0.09 % (40th)
0.09% Progress
Affected Products 6
Advisories 1
Info CVSS EPSS CAPEC Affected Configurations References Security Advisories Packages & Software Tools, Exploits & PoC Graph Web & Social Timeline

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.

Weaknesses
CWE-770
Allocation of Resources Without Limits or Throttling
CVE Status
PUBLISHED
CNA
Red Hat, Inc.
Published Date
2023-12-14 18:15:45
(9 months ago)
Updated Date
2023-12-27 18:49:44
(8 months ago)

Affected Products

Redhat

Configuration #1

    CPE23 From Up To
  Redhat Keycloak prior 21.0.0 version cpe:2.3:a:redhat:keycloak < 21.0.0

Configuration #2

AND
    CPE23 From Up To
OR  
  Redhat Single Sign-on 7.6 cpe:2.3:a:redhat:single_sign-on:7.6
OR  
  Running on/with
  Redhat Enterprise Linux 7.0 cpe:2.3:o:redhat:enterprise_linux:7.0
OR  
  Running on/with
  Redhat Enterprise Linux 8.0 cpe:2.3:o:redhat:enterprise_linux:8.0
OR  
  Running on/with
  Redhat Enterprise Linux 9.0 cpe:2.3:o:redhat:enterprise_linux:9.0

Configuration #3

    CPE23 From Up To
  Redhat Single Sign-on cpe:2.3:a:redhat:single_sign-on:-:*:*:*:text-only

Configuration #4

AND
    CPE23 From Up To
OR  
  Redhat Openshift Container Platform 4.11 cpe:2.3:a:redhat:openshift_container_platform:4.11
OR  
  Running on/with
  Redhat Openshift Container Platform 4.12 cpe:2.3:a:redhat:openshift_container_platform:4.12
OR  
  Running on/with
  Redhat Enterprise Linux 8.0 cpe:2.3:o:redhat:enterprise_linux:8.0

Configuration #5

AND
    CPE23 From Up To
OR  
  Redhat Openshift Container Platform for Power 4.9 cpe:2.3:a:redhat:openshift_container_platform_for_power:4.9
OR  
  Running on/with
  Redhat Openshift Container Platform for Power 4.10 cpe:2.3:a:redhat:openshift_container_platform_for_power:4.10
OR  
  Running on/with
  Redhat Enterprise Linux 8.0 cpe:2.3:o:redhat:enterprise_linux:8.0

Configuration #6

AND
    CPE23 From Up To
OR  
  Redhat Openshift Container Platform for Ibm Linuxone 4.9 cpe:2.3:a:redhat:openshift_container_platform_for_ibm_linuxone:4.9
OR  
  Running on/with
  Redhat Openshift Container Platform for Ibm Linuxone 4.10 cpe:2.3:a:redhat:openshift_container_platform_for_ibm_linuxone:4.10
OR  
  Running on/with
  Redhat Enterprise Linux 8.0 cpe:2.3:o:redhat:enterprise_linux:8.0