CVE-2022-3782

Keycloack: Path Traversal mediante codificación de URL doble. Se encontró una falla en Keycloak, donde no valida correctamente las URL incluidas en una redirección. Un atacante puede utilizar esta falla para crear una solicitud maliciosa para eludir la validación y acceder a otras URL e información potencialmente confidencial dentro del dominio o posiblemente realizar más ataques. Esta falla afecta a cualquier cliente que utilice un comodín en el campo URI de redireccionamiento válido.

A flaw was found in Keycloak, where it does not properly validate URLs included in a redirect. An attacker can use this flaw to construct a malicious request to bypass validation and access other URLs and potentially sensitive information within the domain or possibly conduct further attacks. This flaw affects any client that utilizes a wildcard in the Valid Redirect URIs field.

Red Hat Single Sign-On 7.6 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 Single Sign-On 7.6.2 serves as a replacement for Red Hat Single Sign-On 7.6.1, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include code execution, cross site scripting, denial of service, deserialization, html injection, memory exhaustion, open redirection, server-side request forgery, and traversal vulnerabilities.