Struts2 remote command execution vulnerability analysis and prevention-vulnerability and early warning-the black bar safety net

Struts 2 is the struts and WebWork technology based on a merge of the new framework. Its brand new Struts 2 architecture and Struts 1 architecture the difference is huge. Struts 2 with WebWork as the core, using the interceptor mechanism to deal with user's request, such design also makes the...