medium
5.4
CWE
75 79 74
EPSS
0.100%
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2023-6134: Keycloak: reflected xss via wildcard in oidc redirect_uri

First published: Tue Nov 14 2023(Updated: )

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.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
maven/org.keycloak:keycloak-services<23.0.3
23.0.3
Red Hat Single Sign-On<7.6.6
Red Hat Keycloak<22.0.7
All of
Red Hat Single Sign-On<7.6
Any of
Red Hat Enterprise Linux=7.0
Red Hat Enterprise Linux=8.0
Red Hat Enterprise Linux=9.0
All of
Any of
Red Hat OpenShift Container Platform=4.11
Red Hat OpenShift Container Platform=4.12
Red Hat Enterprise Linux=8.0
All of
Any of
Red Hat OpenShift Container Platform for Power=4.9
Red Hat OpenShift Container Platform for Power=4.10
Red Hat Enterprise Linux=8.0
All of
Any of
Red Hat OpenShift Container Platform=4.9
Red Hat OpenShift Container Platform=4.10
Red Hat Enterprise Linux=8.0
Red Hat Single Sign-On

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-6134?

    CVE-2023-6134 has been classified as a high-severity vulnerability due to its potential for cross-site scripting (XSS) attacks.

  • How do I fix CVE-2023-6134?

    To fix CVE-2023-6134, upgrade Keycloak to version 23.0.3 or later, or update Red Hat Single Sign-On and Red Hat Keycloak to their respective patched versions.

  • Which software versions are affected by CVE-2023-6134?

    CVE-2023-6134 affects Keycloak versions prior to 23.0.3, Red Hat Single Sign-On versions prior to 7.6.6, and Red Hat Keycloak versions prior to 22.0.7.

  • Can CVE-2023-6134 lead to other vulnerabilities?

    Yes, CVE-2023-6134 can allow an attacker to exploit it for further attacks, including cross-site scripting (XSS).

  • What is the underlying issue of CVE-2023-6134?

    The underlying issue of CVE-2023-6134 is a flaw in Keycloak that fails to properly validate redirect URIs with certain schemes when a wildcard is appended.

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