Description
ClassLoaderTheme and ClasspathThemeResourceProviderFactory allows reading any file available as a resource to the classloader. By sending requests for theme resources with a relative path from an external HTTP client, the client will receive the content of random files if available.
Remediation
References
https://access.redhat.com/security/cve/CVE-2021-3856
https://bugzilla.redhat.com/show_bug.cgi?id=2010164
https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743
https://github.com/keycloak/keycloak/pull/8588
https://issues.redhat.com/browse/KEYCLOAK-19422
Related Vulnerabilities
CVE-2021-25913 Vulnerability in npm package set-or-get
CVE-2011-1475 Vulnerability in maven package org.apache.tomcat.embed:tomcat-embed-core
CVE-2023-22579 Vulnerability in npm package sequelize
CVE-2020-15777 Vulnerability in maven package com.gradle:gradle-enterprise-maven-extension
CVE-2022-36313 Vulnerability in maven package org.webjars.npm:file-type