CVE-2020-15171 – Users with SCRIPT rights can execute arbitrary code in XWiki

https://notcve.org/view.php?id=CVE-2020-15171

In XWiki before versions 11.10.5 or 12.2.1, any user with SCRIPT right (EDIT right before XWiki 7.4) can gain access to the application server Servlet context which contains tools allowing to instantiate arbitrary Java objects and invoke methods that may lead to arbitrary code execution. The only workaround is to give SCRIPT right only to trusted users. En XWiki versiones anteriores a 11.10.5 o 12.2.1, cualquier usuario con derecho de SCRIPT (derecho EDIT anterior a XWiki 7.4), puede obtener acceso al contexto del Servlet del servidor de aplicaciones, que contiene herramientas que permiten crear instancias de objetos Java arbitrarios e invocar métodos que pueden conducir a una ejecución de código. La única solución alternativa es otorgar el derecho de SCRIPT solo a los usuarios de confianza • https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-7qw5-pqhc-xm4g • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') CWE-94: Improper Control of Generation of Code ('Code Injection') •