Medium [CVE-2023-6134 +1] Keycloak: open redirect via "form_post.jwt" jarm response mode
This medium-severity Red Hat Linux advisory covers CVE-2023-6927 and CVE-2023-6134 affecting Red Hat build of Keycloak 22.0.8, Red Hat Single Sign-On 7.6 for RHEL 7, Red Hat Single Sign-On 7.6 for RHEL 8.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 2 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.
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Summary
A flaw was found in Keycloak. This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt" which could be used to bypass the security patch implemented to address CVE-2023-6134.
Red Hat rates this as a moderate, following the same case for CVE-2023-6134, but with another response mode with JSON Web Token. Red Hat severity: Moderate — CVSS 4.6 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N).
Weakness: CWE-601. Affected Red Hat products: Red Hat build of Keycloak 22; Red Hat build of Keycloak 22.0.8; 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; Single Sign-On 7.6.6.
Red Hat fixing advisory: RHSA-2024:0100, RHSA-2024:0101, RHSA-2024:0804, RHSA-2024:0094, RHSA-2024:0798, RHSA-2024:0095, RHSA-2024:0799, RHSA-2024:0096, RHSA-2024:0800, RHSA-2024:0097, RHSA-2024:0801, RHSA-2024:0098.
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 23 days ago·verify at source
- rhbk/keycloak-rhel9:22-7
- keycloak-core
- rh-sso7-keycloak
- rh-sso7-keycloak-0:18.0.11-3.redhat_00001.1.el7sso
- rh-sso7-keycloak-0:18.0.12-1.redhat_00001.1.el7sso
- rh-sso7-keycloak-0:18.0.11-3.redhat_00001.1.el8sso
- rh-sso7-keycloak-0:18.0.12-1.redhat_00001.1.el8sso
- rh-sso7-keycloak-0:18.0.11-3.redhat_00001.1.el9sso
- rh-sso7-keycloak-0:18.0.12-1.redhat_00001.1.el9sso
- rh-sso-7/sso76-openshift-rhel8:7.6-39
- rh-sso-7/sso76-openshift-rhel8:7.6-41
- RHSA-2024:0100
- RHSA-2024:0101
- RHSA-2024:0804
- RHSA-2024:0094
- RHSA-2024:0798
- RHSA-2024:0095
- RHSA-2024:0799
- RHSA-2024:0096
- RHSA-2024:0800
- RHSA-2024:0097
- RHSA-2024:0801
- RHSA-2024:0098
Official advisory · high-confidence parse· fetched 23 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not 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 23 days ago·verify at source
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