Cross-site scripting in Keycloak - CVE-2023-6134

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Main Vulnerability Database Vulnerabilities #VU84532

Cross-site scripting in Keycloak - CVE-2023-6134

Published: December 19, 2023 / Updated: January 9, 2024


Vulnerability identifier: #VU84532
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2023-6134
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within wildcard in OIDC redirect_uri. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


Affected software

Keycloak
Red Hat Single Sign-On
rh-sso7-keycloak (Red Hat package)

How to mitigate CVE-2023-6134

Install updates from vendor's website.

Keycloak - addressed in versions 22.0.7, 23.0.3
Red Hat Single Sign-On - addressed in versions 7.6.6, 7.6.7
rh-sso7-keycloak (Red Hat package) - addressed in versions 18.0.11-2.redhat_00003.1.el7sso, 18.0.11-2.redhat_00003.1.el8sso, 18.0.11-2.redhat_00003.1.el9sso, 18.0.12-1.redhat_00001.1.el7sso, 18.0.12-1.redhat_00001.1.el8sso, 18.0.12-1.redhat_00001.1.el9sso

External References

Related Security Bulletins