Cross-site scripting in Keycloak - CVE-2022-4361
Published: June 28, 2023 / Updated: June 28, 2023
Vulnerability identifier: #VU77750
CSH Severity: Medium
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-2022-4361
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 in the SAML or OIDC providers in Keycloak due to insufficient sanitization of user-supplied data passed via the AssertionConsumerServiceURL value or the 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)
Red Hat Single Sign-On
rh-sso7-keycloak (Red Hat package)
How to mitigate CVE-2022-4361
Install updates from vendor's website.
Keycloak - update to 21.1.2
Red Hat Single Sign-On - update to 7.6.4
rh-sso7-keycloak (Red Hat package) - addressed in versions 18.0.8-1.redhat_00001.1.el7sso, 18.0.8-1.redhat_00001.1.el8sso, 18.0.8-1.redhat_00001.1.el9sso
Red Hat Single Sign-On - update to 7.6.4
rh-sso7-keycloak (Red Hat package) - addressed in versions 18.0.8-1.redhat_00001.1.el7sso, 18.0.8-1.redhat_00001.1.el8sso, 18.0.8-1.redhat_00001.1.el9sso