Struts2 vulnerability analysis of the Ognl expression characteristics of the initiator of the idea-vulnerability warning-the black bar safety net

0×0 1 Summary 0×0 2 background and principles of analysis 0×0 3 example simulation and tracking 0×0 4 Summary 0×0 1 Summary: In the Ognl expression, will be the brackets“”contains the variable content as a Ognl expression execution. Ognl expressions of this characteristic, triggering a new attack...