Trend Micro researchers have uncovered a piece of backdoor-type malware that infects Java-based HTTP servers. The threat, known as BKDR_JAVAWAR.JG, comes in the form of a JavaServer Page (JSP) The JSP is a type of Web page that can only be deployed and served from a specialized Web server with a Java servlet container such as Apache Tomcat. An attacker can access it remotely and use its functions to browse, upload, edit, delete, download or copy files from the infected system.”]
Source: https://www.csoonline.com/article/2132711/researchers-find-malware-targeting-java-http-servers.html