High [CVE-2024-4540] Keycloak: exposure of sensitive information in pushed authorization requests (par) kc_restart cookie
This high-severity Red Hat Linux advisory covers CVE-2024-4540 affecting Red Hat build of Keycloak 22, Red Hat build of Keycloak 24, Red Hat Single Sign-On 7.6 for RHEL 7.
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Summary
A flaw was found in Keycloak in OAuth 2.0 Pushed Authorization Requests (PAR). Client-provided parameters were found to be included in plain text in the KC_RESTART cookie returned by the authorization server's HTTP response to a `request_uri` authorization request, possibly leading to an information disclosure vulnerability.
Red Hat severity: Low — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-312.
Affected Red Hat products: Red Hat Build of Keycloak; Red Hat build of Keycloak 22; Red Hat build of Keycloak 24; Red Hat Single Sign-On 7; Red Hat Single Sign-On 7.6 for RHEL 7; Red Hat Single Sign-On 7.6 for RHEL 8; Red Hat Single Sign-On 7.6 for RHEL 9; RHEL-8 based Middleware Containers.
Red Hat fixing advisory: RHSA-2024:3574, RHSA-2024:3575, RHSA-2024:3573, RHSA-2024:3576, RHSA-2024:3572, RHSA-2024:3566, RHSA-2024:3567, RHSA-2024:3568, RHSA-2024:3570.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
- rhbk/keycloak-operator-bundle:22.0.11-2
- rhbk/keycloak-rhel9:22-15
- rhbk/keycloak-rhel9-operator:22-18
- rhbk/keycloak-operator-bundle:24.0.5-2
- rhbk/keycloak-rhel9:24-10
- rhbk/keycloak-rhel9-operator:24-10
- rh-sso7-keycloak-0:18.0.14-1.redhat_00001.1.el7sso
- rh-sso7-keycloak-0:18.0.14-1.redhat_00001.1.el8sso
- rh-sso7-keycloak-0:18.0.14-1.redhat_00001.1.el9sso
- rh-sso-7/sso76-openshift-rhel8:7.6-49
- RHSA-2024:3574
- RHSA-2024:3575
- RHSA-2024:3573
- RHSA-2024:3576
- RHSA-2024:3572
- RHSA-2024:3566
- RHSA-2024:3567
- RHSA-2024:3568
- RHSA-2024:3570
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
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