cve-2023-6563
Vulnerability from cvelistv5
Published
2023-12-14 18:01
Modified
2024-11-23 03:38
Severity ?
7.7 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Summary
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
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:7854Vendor Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:7855Vendor Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:7856Vendor Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:7857Exploit
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:7858Vendor Advisory
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2023-6563Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2253308Issue Tracking
secalert@redhat.comhttps://github.com/keycloak/keycloak/issues/13340Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2023:7854Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2023:7855Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2023:7856Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2023:7857Exploit
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2023:7858Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2023-6563Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2253308Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://github.com/keycloak/keycloak/issues/13340Issue Tracking
Impacted products
Vendor Product Version
Red Hat Red Hat Single Sign-On 7.6 for RHEL 8 Unaffected: 0:18.0.11-2.redhat_00003.1.el8sso   < *
    cpe:/a:redhat:red_hat_single_sign_on:7.6::el8
Red Hat Red Hat Single Sign-On 7.6 for RHEL 9 Unaffected: 0:18.0.11-2.redhat_00003.1.el9sso   < *
    cpe:/a:redhat:red_hat_single_sign_on:7.6::el9
Red Hat RHEL-8 based Middleware Containers Unaffected: 7.6-38   < *
    cpe:/a:redhat:rhosemc:1.0::el8
Red Hat RHEL-8 based Middleware Containers Unaffected: 7.6.6-2   < *
    cpe:/a:redhat:rhosemc:1.0::el8
Red Hat Single Sign-On 7.6.6     cpe:/a:redhat:red_hat_single_sign_on:7.6.6
Red Hat Red Hat Build of Keycloak     cpe:/a:redhat:build_keycloak:
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Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2253308\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://github.com/keycloak/keycloak/issues/13340\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\"]}]}}"
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.