RHSA-2023:7860

Vulnerability from csaf_redhat - Published: 2023-12-14 19:16 - Updated: 2026-11-07 05:43
Summary
Red Hat Security Advisory: Red Hat build of Keycloak 22.0.7 enhancement and security update
Severity
Important
Notes
Topic: Red Hat build of Keycloak 22.0.7 is now available from the Customer Portal. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: Red Hat build of Keycloak 22.0.7 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. This release of Red Hat build of Keycloak 22.0.7 serves as a replacement for Red Hat build of Keycloak 22.0.6, and includes bug fixes, enhancements and security fixes, which are documented in the Release Notes document linked to in the References. Security Fix(es): * redirect_uri validation logic that allows for a bypass of otherwise explicitly allowed hosts (CVE-2023-6134) * reflected XSS via wildcard in OIDC redirect_uri (CVE-2023-6291) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2023-6134

A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This issue could allow an attacker to submit a specially crafted request leading to cross-site scripting (XSS) or further attacks. This flaw is the result of an incomplete fix for CVE-2020-10748.

4.6 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
CWE-79 - Improper Neutralization of Input During Web Page Generation
Affected products
Product Identifier Version Remediation
Red Hat build of Keycloak 22.0.7
Red Hat / Red Hat build of Keycloak
 cpe:/a:redhat:build_keycloak:22 —
Vendor Fix fix
Threats
Impact Moderate
CVE-2023-6291

A flaw was found in the redirect_uri validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users.

7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
CWE-601 - URL Redirection to Untrusted Site
Affected products
Fixed 1 product, the same list as for CVE-2023-6134
Threats
Impact Important
References
Acknowledgments
https://security.lauritz-holtmann.de/ Lauritz Holtmann
To clipboard 

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