RHSA-2021:2070: Moderate: Red Hat Single Sign-On 7.4.7 security update

Red Hat Single Sign-On 7.4 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 7.4.7 serves as a replacement for Red Hat Single Sign-On 7.4.6, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References.Security Fix(es): netty: Information disclosure via the local system temporary directory (CVE-2021-21290) netty: possible request smuggling in HTTP/2 due missing validation (CVE-2021-21295) keycloak: Backchannel logout not working when Principal Type is set to Attribute Name for external SAML IDP (CVE-2021-3461) keycloak: Internationalized domain name (IDN) homograph attack to impersonate users (CVE-2021-3424) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.