Apache Tomcat < 9.0.1 (Beta) / < 8.5.23 / < 8.0.47 / < 7.0.8 - JSP Upload Bypass / Remote Code Execution
Description :
When running Apache Tomcat versions 9.0.0.M1 to 9.0.0, 8.5.0 to8.5.22, 8.0.0.RC1 to 8.0.46 and 7.0.0 to 7.0.81 with HTTP PUTs enabled(e.g. via setting the readonly initialisation parameter of the Defaultservlet to false) it was possible to upload a JSP file to the servervia a specially crafted request. This JSP could then be requested andany code it contained would be executed by the server.