CVE-2020-1953 – apache-commons-configuration: uncontrolled class instantiation when loading YAML files

https://notcve.org/view.php?id=CVE-2020-1953

Apache Commons Configuration uses a third-party library to parse YAML files which by default allows the instantiation of classes if the YAML includes special statements. Apache Commons Configuration versions 2.2, 2.3, 2.4, 2.5, 2.6 did not change the default settings of this library. So if a YAML file was loaded from an untrusted source, it could therefore load and execute code out of the control of the host application. Apache Commons Configuration usa una biblioteca de terceros para analizar archivos YAML, la cual por defecto permite la instanciación de clases si el YAML incluye sentencias especiales. Apache Commons Configuration versiones 2.2, 2.3, 2.4, 2.5, 2.6 no cambió la configuración predeterminada de esta biblioteca. • https://lists.apache.org/thread.html/d0e00f2e147a9e9b13a6829133092f349b2882bf6860397368a52600%40%3Cannounce.tomcat.apache.org%3E https://lists.apache.org/thread.html/r16a2e949e35780c8974cf66104e812410f3904f752df6b66bf292269%40%3Ccommits.servicecomb.apache.org%3E https://lists.apache.org/thread.html/rde2186ad6ac0d6ed8d51af7509244adcf1ce0f9a3b7e1d1dd3b64676%40%3Ccommits.camel.apache.org%3E https://www.oracle.com/security-alerts/cpuoct2020.html https://access.redhat.com/security/cve/CVE-2020-1953 https://bugzilla.redhat.com/show_bug.cgi?id=1815212 • CWE-20: Improper Input Validation •