CVE-2023-6134

Public Exploit
Keycloak: reflected xss via wildcard in oidc redirect_uri

Description

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.

Category

4.6
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 1.11% Top 25%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Red Hat Red Hat build of Keycloak 22
Affected: Red Hat Red Hat build of Keycloak 22
Affected: Red Hat Red Hat build of Keycloak 22
Affected: Red Hat Red Hat build of Keycloak 22.0.7
Affected: Red Hat Red Hat Single Sign-On 7
Affected: Red Hat Red Hat Single Sign-On 7.6 for RHEL 7
Affected: Red Hat Red Hat Single Sign-On 7.6 for RHEL 7
Affected: Red Hat Red Hat Single Sign-On 7.6 for RHEL 8
Affected: Red Hat Red Hat Single Sign-On 7.6 for RHEL 8
Affected: Red Hat Red Hat Single Sign-On 7.6 for RHEL 9
Affected: Red Hat Red Hat Single Sign-On 7.6 for RHEL 9
Affected: Red Hat RHEL-8 based Middleware Containers
Affected: Red Hat RHEL-8 based Middleware Containers
Affected: Red Hat RHEL-8 based Middleware Containers
Affected: Red Hat Single Sign-On 7.6.6
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2023:7854 vendor advisory
https://access.redhat.com/errata/RHSA-2023:7855 vendor advisory
https://access.redhat.com/errata/RHSA-2023:7856 vendor advisory
https://access.redhat.com/errata/RHSA-2023:7857 vendor advisory exploit
https://access.redhat.com/errata/RHSA-2023:7858 vendor advisory
https://access.redhat.com/errata/RHSA-2023:7860 vendor advisory
https://access.redhat.com/errata/RHSA-2023:7861 vendor advisory
https://access.redhat.com/errata/RHSA-2024:0798 vendor advisory
https://access.redhat.com/errata/RHSA-2024:0799 vendor advisory
https://access.redhat.com/errata/RHSA-2024:0800 vendor advisory
https://access.redhat.com/errata/RHSA-2024:0801 vendor advisory
https://access.redhat.com/errata/RHSA-2024:0804 vendor advisory
https://access.redhat.com/security/cve/CVE-2023-6134 vdb entry vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2249673 issue tracking

Frequently Asked Questions

What is the severity of CVE-2023-6134?
CVE-2023-6134 has been scored as a medium severity vulnerability.
How to fix CVE-2023-6134?
To fix CVE-2023-6134, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-6134 being actively exploited in the wild?
It is possible that CVE-2023-6134 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-6134?
CVE-2023-6134 affects Red Hat Red Hat build of Keycloak 22, Red Hat Red Hat build of Keycloak 22, Red Hat Red Hat build of Keycloak 22, Red Hat Red Hat build of Keycloak 22.0.7, Red Hat Red Hat Single Sign-On 7, Red Hat Red Hat Single Sign-On 7.6 for RHEL 7, Red Hat Red Hat Single Sign-On 7.6 for RHEL 7, Red Hat Red Hat Single Sign-On 7.6 for RHEL 8, Red Hat Red Hat Single Sign-On 7.6 for RHEL 8, Red Hat Red Hat Single Sign-On 7.6 for RHEL 9, Red Hat Red Hat Single Sign-On 7.6 for RHEL 9, Red Hat RHEL-8 based Middleware Containers, Red Hat RHEL-8 based Middleware Containers, Red Hat RHEL-8 based Middleware Containers, Red Hat Single Sign-On 7.6.6.
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